Nuke the sandbox

4 files changed, 0 insertions, 2090 deletions

diff --git a/security/sandbox/chromium/base/time/time.cc b/security/sandbox/chromium/base/time/time.cc
deleted file mode 100644
index 76ffeb744..000000000
--- a/security/sandbox/chromium/base/time/time.cc
+++ /dev/null
@@ -1,347 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/time/time.h"
-
-#include <cmath>
-#include <ios>
-#include <limits>
-#include <ostream>
-#include <sstream>
-
-#include "base/lazy_instance.h"
-#include "base/logging.h"
-#include "base/macros.h"
-#include "base/strings/stringprintf.h"
-#include "base/third_party/nspr/prtime.h"
-#include "build/build_config.h"
-
-namespace base {
-
-// TimeDelta ------------------------------------------------------------------
-
-// static
-TimeDelta TimeDelta::Max() {
-  return TimeDelta(std::numeric_limits<int64_t>::max());
-}
-
-int TimeDelta::InDays() const {
-  if (is_max()) {
-    // Preserve max to prevent overflow.
-    return std::numeric_limits<int>::max();
-  }
-  return static_cast<int>(delta_ / Time::kMicrosecondsPerDay);
-}
-
-int TimeDelta::InHours() const {
-  if (is_max()) {
-    // Preserve max to prevent overflow.
-    return std::numeric_limits<int>::max();
-  }
-  return static_cast<int>(delta_ / Time::kMicrosecondsPerHour);
-}
-
-int TimeDelta::InMinutes() const {
-  if (is_max()) {
-    // Preserve max to prevent overflow.
-    return std::numeric_limits<int>::max();
-  }
-  return static_cast<int>(delta_ / Time::kMicrosecondsPerMinute);
-}
-
-double TimeDelta::InSecondsF() const {
-  if (is_max()) {
-    // Preserve max to prevent overflow.
-    return std::numeric_limits<double>::infinity();
-  }
-  return static_cast<double>(delta_) / Time::kMicrosecondsPerSecond;
-}
-
-int64_t TimeDelta::InSeconds() const {
-  if (is_max()) {
-    // Preserve max to prevent overflow.
-    return std::numeric_limits<int64_t>::max();
-  }
-  return delta_ / Time::kMicrosecondsPerSecond;
-}
-
-double TimeDelta::InMillisecondsF() const {
-  if (is_max()) {
-    // Preserve max to prevent overflow.
-    return std::numeric_limits<double>::infinity();
-  }
-  return static_cast<double>(delta_) / Time::kMicrosecondsPerMillisecond;
-}
-
-int64_t TimeDelta::InMilliseconds() const {
-  if (is_max()) {
-    // Preserve max to prevent overflow.
-    return std::numeric_limits<int64_t>::max();
-  }
-  return delta_ / Time::kMicrosecondsPerMillisecond;
-}
-
-int64_t TimeDelta::InMillisecondsRoundedUp() const {
-  if (is_max()) {
-    // Preserve max to prevent overflow.
-    return std::numeric_limits<int64_t>::max();
-  }
-  return (delta_ + Time::kMicrosecondsPerMillisecond - 1) /
-      Time::kMicrosecondsPerMillisecond;
-}
-
-int64_t TimeDelta::InMicroseconds() const {
-  if (is_max()) {
-    // Preserve max to prevent overflow.
-    return std::numeric_limits<int64_t>::max();
-  }
-  return delta_;
-}
-
-namespace time_internal {
-
-int64_t SaturatedAdd(TimeDelta delta, int64_t value) {
-  CheckedNumeric<int64_t> rv(delta.delta_);
-  rv += value;
-  return FromCheckedNumeric(rv);
-}
-
-int64_t SaturatedSub(TimeDelta delta, int64_t value) {
-  CheckedNumeric<int64_t> rv(delta.delta_);
-  rv -= value;
-  return FromCheckedNumeric(rv);
-}
-
-int64_t FromCheckedNumeric(const CheckedNumeric<int64_t> value) {
-  if (value.IsValid())
-    return value.ValueUnsafe();
-
-  // We could return max/min but we don't really expose what the maximum delta
-  // is. Instead, return max/(-max), which is something that clients can reason
-  // about.
-  // TODO(rvargas) crbug.com/332611: don't use internal values.
-  int64_t limit = std::numeric_limits<int64_t>::max();
-  if (value.validity() == internal::RANGE_UNDERFLOW)
-    limit = -limit;
-  return value.ValueOrDefault(limit);
-}
-
-}  // namespace time_internal
-
-std::ostream& operator<<(std::ostream& os, TimeDelta time_delta) {
-  return os << time_delta.InSecondsF() << "s";
-}
-
-// Time -----------------------------------------------------------------------
-
-// static
-Time Time::Max() {
-  return Time(std::numeric_limits<int64_t>::max());
-}
-
-// static
-Time Time::FromTimeT(time_t tt) {
-  if (tt == 0)
-    return Time();  // Preserve 0 so we can tell it doesn't exist.
-  if (tt == std::numeric_limits<time_t>::max())
-    return Max();
-  return Time(kTimeTToMicrosecondsOffset) + TimeDelta::FromSeconds(tt);
-}
-
-time_t Time::ToTimeT() const {
-  if (is_null())
-    return 0;  // Preserve 0 so we can tell it doesn't exist.
-  if (is_max()) {
-    // Preserve max without offset to prevent overflow.
-    return std::numeric_limits<time_t>::max();
-  }
-  if (std::numeric_limits<int64_t>::max() - kTimeTToMicrosecondsOffset <= us_) {
-    DLOG(WARNING) << "Overflow when converting base::Time with internal " <<
-                     "value " << us_ << " to time_t.";
-    return std::numeric_limits<time_t>::max();
-  }
-  return (us_ - kTimeTToMicrosecondsOffset) / kMicrosecondsPerSecond;
-}
-
-// static
-Time Time::FromDoubleT(double dt) {
-  if (dt == 0 || std::isnan(dt))
-    return Time();  // Preserve 0 so we can tell it doesn't exist.
-  return Time(kTimeTToMicrosecondsOffset) + TimeDelta::FromSecondsD(dt);
-}
-
-double Time::ToDoubleT() const {
-  if (is_null())
-    return 0;  // Preserve 0 so we can tell it doesn't exist.
-  if (is_max()) {
-    // Preserve max without offset to prevent overflow.
-    return std::numeric_limits<double>::infinity();
-  }
-  return (static_cast<double>(us_ - kTimeTToMicrosecondsOffset) /
-          static_cast<double>(kMicrosecondsPerSecond));
-}
-
-#if defined(OS_POSIX)
-// static
-Time Time::FromTimeSpec(const timespec& ts) {
-  return FromDoubleT(ts.tv_sec +
-                     static_cast<double>(ts.tv_nsec) /
-                         base::Time::kNanosecondsPerSecond);
-}
-#endif
-
-// static
-Time Time::FromJsTime(double ms_since_epoch) {
-  // The epoch is a valid time, so this constructor doesn't interpret
-  // 0 as the null time.
-  return Time(kTimeTToMicrosecondsOffset) +
-         TimeDelta::FromMillisecondsD(ms_since_epoch);
-}
-
-double Time::ToJsTime() const {
-  if (is_null()) {
-    // Preserve 0 so the invalid result doesn't depend on the platform.
-    return 0;
-  }
-  if (is_max()) {
-    // Preserve max without offset to prevent overflow.
-    return std::numeric_limits<double>::infinity();
-  }
-  return (static_cast<double>(us_ - kTimeTToMicrosecondsOffset) /
-          kMicrosecondsPerMillisecond);
-}
-
-int64_t Time::ToJavaTime() const {
-  if (is_null()) {
-    // Preserve 0 so the invalid result doesn't depend on the platform.
-    return 0;
-  }
-  if (is_max()) {
-    // Preserve max without offset to prevent overflow.
-    return std::numeric_limits<int64_t>::max();
-  }
-  return ((us_ - kTimeTToMicrosecondsOffset) /
-          kMicrosecondsPerMillisecond);
-}
-
-// static
-Time Time::UnixEpoch() {
-  Time time;
-  time.us_ = kTimeTToMicrosecondsOffset;
-  return time;
-}
-
-Time Time::LocalMidnight() const {
-  Exploded exploded;
-  LocalExplode(&exploded);
-  exploded.hour = 0;
-  exploded.minute = 0;
-  exploded.second = 0;
-  exploded.millisecond = 0;
-  return FromLocalExploded(exploded);
-}
-
-// static
-bool Time::FromStringInternal(const char* time_string,
-                              bool is_local,
-                              Time* parsed_time) {
-  DCHECK((time_string != NULL) && (parsed_time != NULL));
-
-  if (time_string[0] == '\0')
-    return false;
-
-  PRTime result_time = 0;
-  PRStatus result = PR_ParseTimeString(time_string,
-                                       is_local ? PR_FALSE : PR_TRUE,
-                                       &result_time);
-  if (PR_SUCCESS != result)
-    return false;
-
-  result_time += kTimeTToMicrosecondsOffset;
-  *parsed_time = Time(result_time);
-  return true;
-}
-
-std::ostream& operator<<(std::ostream& os, Time time) {
-  Time::Exploded exploded;
-  time.UTCExplode(&exploded);
-  // Use StringPrintf because iostreams formatting is painful.
-  return os << StringPrintf("%04d-%02d-%02d %02d:%02d:%02d.%03d UTC",
-                            exploded.year,
-                            exploded.month,
-                            exploded.day_of_month,
-                            exploded.hour,
-                            exploded.minute,
-                            exploded.second,
-                            exploded.millisecond);
-}
-
-// Local helper class to hold the conversion from Time to TickTime at the
-// time of the Unix epoch.
-class UnixEpochSingleton {
- public:
-  UnixEpochSingleton()
-      : unix_epoch_(TimeTicks::Now() - (Time::Now() - Time::UnixEpoch())) {}
-
-  TimeTicks unix_epoch() const { return unix_epoch_; }
-
- private:
-  const TimeTicks unix_epoch_;
-
-  DISALLOW_COPY_AND_ASSIGN(UnixEpochSingleton);
-};
-
-static LazyInstance<UnixEpochSingleton>::Leaky
-    leaky_unix_epoch_singleton_instance = LAZY_INSTANCE_INITIALIZER;
-
-// Static
-TimeTicks TimeTicks::UnixEpoch() {
-  return leaky_unix_epoch_singleton_instance.Get().unix_epoch();
-}
-
-TimeTicks TimeTicks::SnappedToNextTick(TimeTicks tick_phase,
-                                       TimeDelta tick_interval) const {
-  // |interval_offset| is the offset from |this| to the next multiple of
-  // |tick_interval| after |tick_phase|, possibly negative if in the past.
-  TimeDelta interval_offset = (tick_phase - *this) % tick_interval;
-  // If |this| is exactly on the interval (i.e. offset==0), don't adjust.
-  // Otherwise, if |tick_phase| was in the past, adjust forward to the next
-  // tick after |this|.
-  if (!interval_offset.is_zero() && tick_phase < *this)
-    interval_offset += tick_interval;
-  return *this + interval_offset;
-}
-
-std::ostream& operator<<(std::ostream& os, TimeTicks time_ticks) {
-  // This function formats a TimeTicks object as "bogo-microseconds".
-  // The origin and granularity of the count are platform-specific, and may very
-  // from run to run. Although bogo-microseconds usually roughly correspond to
-  // real microseconds, the only real guarantee is that the number never goes
-  // down during a single run.
-  const TimeDelta as_time_delta = time_ticks - TimeTicks();
-  return os << as_time_delta.InMicroseconds() << " bogo-microseconds";
-}
-
-std::ostream& operator<<(std::ostream& os, ThreadTicks thread_ticks) {
-  const TimeDelta as_time_delta = thread_ticks - ThreadTicks();
-  return os << as_time_delta.InMicroseconds() << " bogo-thread-microseconds";
-}
-
-// Time::Exploded -------------------------------------------------------------
-
-inline bool is_in_range(int value, int lo, int hi) {
-  return lo <= value && value <= hi;
-}
-
-bool Time::Exploded::HasValidValues() const {
-  return is_in_range(month, 1, 12) &&
-         is_in_range(day_of_week, 0, 6) &&
-         is_in_range(day_of_month, 1, 31) &&
-         is_in_range(hour, 0, 23) &&
-         is_in_range(minute, 0, 59) &&
-         is_in_range(second, 0, 60) &&
-         is_in_range(millisecond, 0, 999);
-}
-
-}  // namespace base
diff --git a/security/sandbox/chromium/base/time/time.h b/security/sandbox/chromium/base/time/time.h
deleted file mode 100644
index 066d91083..000000000
--- a/security/sandbox/chromium/base/time/time.h
+++ /dev/null
@@ -1,764 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Time represents an absolute point in coordinated universal time (UTC),
-// internally represented as microseconds (s/1,000,000) since the Windows epoch
-// (1601-01-01 00:00:00 UTC). System-dependent clock interface routines are
-// defined in time_PLATFORM.cc. Note that values for Time may skew and jump
-// around as the operating system makes adjustments to synchronize (e.g., with
-// NTP servers). Thus, client code that uses the Time class must account for
-// this.
-//
-// TimeDelta represents a duration of time, internally represented in
-// microseconds.
-//
-// TimeTicks and ThreadTicks represent an abstract time that is most of the time
-// incrementing, for use in measuring time durations. Internally, they are
-// represented in microseconds. They can not be converted to a human-readable
-// time, but are guaranteed not to decrease (unlike the Time class). Note that
-// TimeTicks may "stand still" (e.g., if the computer is suspended), and
-// ThreadTicks will "stand still" whenever the thread has been de-scheduled by
-// the operating system.
-//
-// All time classes are copyable, assignable, and occupy 64-bits per
-// instance. Thus, they can be efficiently passed by-value (as opposed to
-// by-reference).
-//
-// Definitions of operator<< are provided to make these types work with
-// DCHECK_EQ() and other log macros. For human-readable formatting, see
-// "base/i18n/time_formatting.h".
-//
-// So many choices!  Which time class should you use?  Examples:
-//
-//   Time:        Interpreting the wall-clock time provided by a remote
-//                system. Detecting whether cached resources have
-//                expired. Providing the user with a display of the current date
-//                and time. Determining the amount of time between events across
-//                re-boots of the machine.
-//
-//   TimeTicks:   Tracking the amount of time a task runs. Executing delayed
-//                tasks at the right time. Computing presentation timestamps.
-//                Synchronizing audio and video using TimeTicks as a common
-//                reference clock (lip-sync). Measuring network round-trip
-//                latency.
-//
-//   ThreadTicks: Benchmarking how long the current thread has been doing actual
-//                work.
-
-#ifndef BASE_TIME_TIME_H_
-#define BASE_TIME_TIME_H_
-
-#include <stdint.h>
-#include <time.h>
-
-#include <iosfwd>
-#include <limits>
-
-#include "base/base_export.h"
-#include "base/numerics/safe_math.h"
-#include "build/build_config.h"
-
-#if defined(OS_MACOSX)
-#include <CoreFoundation/CoreFoundation.h>
-// Avoid Mac system header macro leak.
-#undef TYPE_BOOL
-#endif
-
-#if defined(OS_POSIX)
-#include <unistd.h>
-#include <sys/time.h>
-#endif
-
-#if defined(OS_WIN)
-// For FILETIME in FromFileTime, until it moves to a new converter class.
-// See TODO(iyengar) below.
-#include <windows.h>
-
-#include "base/gtest_prod_util.h"
-#endif
-
-namespace base {
-
-class TimeDelta;
-
-// The functions in the time_internal namespace are meant to be used only by the
-// time classes and functions.  Please use the math operators defined in the
-// time classes instead.
-namespace time_internal {
-
-// Add or subtract |value| from a TimeDelta. The int64_t argument and return
-// value are in terms of a microsecond timebase.
-BASE_EXPORT int64_t SaturatedAdd(TimeDelta delta, int64_t value);
-BASE_EXPORT int64_t SaturatedSub(TimeDelta delta, int64_t value);
-
-// Clamp |value| on overflow and underflow conditions. The int64_t argument and
-// return value are in terms of a microsecond timebase.
-BASE_EXPORT int64_t FromCheckedNumeric(const CheckedNumeric<int64_t> value);
-
-}  // namespace time_internal
-
-// TimeDelta ------------------------------------------------------------------
-
-class BASE_EXPORT TimeDelta {
- public:
-  TimeDelta() : delta_(0) {
-  }
-
-  // Converts units of time to TimeDeltas.
-  static TimeDelta FromDays(int days);
-  static TimeDelta FromHours(int hours);
-  static TimeDelta FromMinutes(int minutes);
-  static TimeDelta FromSeconds(int64_t secs);
-  static TimeDelta FromMilliseconds(int64_t ms);
-  static TimeDelta FromSecondsD(double secs);
-  static TimeDelta FromMillisecondsD(double ms);
-  static TimeDelta FromMicroseconds(int64_t us);
-#if defined(OS_WIN)
-  static TimeDelta FromQPCValue(LONGLONG qpc_value);
-#endif
-
-  // Converts an integer value representing TimeDelta to a class. This is used
-  // when deserializing a |TimeDelta| structure, using a value known to be
-  // compatible. It is not provided as a constructor because the integer type
-  // may be unclear from the perspective of a caller.
-  static TimeDelta FromInternalValue(int64_t delta) { return TimeDelta(delta); }
-
-  // Returns the maximum time delta, which should be greater than any reasonable
-  // time delta we might compare it to. Adding or subtracting the maximum time
-  // delta to a time or another time delta has an undefined result.
-  static TimeDelta Max();
-
-  // Returns the internal numeric value of the TimeDelta object. Please don't
-  // use this and do arithmetic on it, as it is more error prone than using the
-  // provided operators.
-  // For serializing, use FromInternalValue to reconstitute.
-  int64_t ToInternalValue() const { return delta_; }
-
-  // Returns the magnitude (absolute value) of this TimeDelta.
-  TimeDelta magnitude() const {
-    // Some toolchains provide an incomplete C++11 implementation and lack an
-    // int64_t overload for std::abs().  The following is a simple branchless
-    // implementation:
-    const int64_t mask = delta_ >> (sizeof(delta_) * 8 - 1);
-    return TimeDelta((delta_ + mask) ^ mask);
-  }
-
-  // Returns true if the time delta is zero.
-  bool is_zero() const {
-    return delta_ == 0;
-  }
-
-  // Returns true if the time delta is the maximum time delta.
-  bool is_max() const { return delta_ == std::numeric_limits<int64_t>::max(); }
-
-#if defined(OS_POSIX)
-  struct timespec ToTimeSpec() const;
-#endif
-
-  // Returns the time delta in some unit. The F versions return a floating
-  // point value, the "regular" versions return a rounded-down value.
-  //
-  // InMillisecondsRoundedUp() instead returns an integer that is rounded up
-  // to the next full millisecond.
-  int InDays() const;
-  int InHours() const;
-  int InMinutes() const;
-  double InSecondsF() const;
-  int64_t InSeconds() const;
-  double InMillisecondsF() const;
-  int64_t InMilliseconds() const;
-  int64_t InMillisecondsRoundedUp() const;
-  int64_t InMicroseconds() const;
-
-  TimeDelta& operator=(TimeDelta other) {
-    delta_ = other.delta_;
-    return *this;
-  }
-
-  // Computations with other deltas.
-  TimeDelta operator+(TimeDelta other) const {
-    return TimeDelta(time_internal::SaturatedAdd(*this, other.delta_));
-  }
-  TimeDelta operator-(TimeDelta other) const {
-    return TimeDelta(time_internal::SaturatedSub(*this, other.delta_));
-  }
-
-  TimeDelta& operator+=(TimeDelta other) {
-    return *this = (*this + other);
-  }
-  TimeDelta& operator-=(TimeDelta other) {
-    return *this = (*this - other);
-  }
-  TimeDelta operator-() const {
-    return TimeDelta(-delta_);
-  }
-
-  // Computations with numeric types.
-  template<typename T>
-  TimeDelta operator*(T a) const {
-    CheckedNumeric<int64_t> rv(delta_);
-    rv *= a;
-    return TimeDelta(time_internal::FromCheckedNumeric(rv));
-  }
-  template<typename T>
-  TimeDelta operator/(T a) const {
-    CheckedNumeric<int64_t> rv(delta_);
-    rv /= a;
-    return TimeDelta(time_internal::FromCheckedNumeric(rv));
-  }
-  template<typename T>
-  TimeDelta& operator*=(T a) {
-    return *this = (*this * a);
-  }
-  template<typename T>
-  TimeDelta& operator/=(T a) {
-    return *this = (*this / a);
-  }
-
-  int64_t operator/(TimeDelta a) const { return delta_ / a.delta_; }
-  TimeDelta operator%(TimeDelta a) const {
-    return TimeDelta(delta_ % a.delta_);
-  }
-
-  // Comparison operators.
-  bool operator==(TimeDelta other) const {
-    return delta_ == other.delta_;
-  }
-  bool operator!=(TimeDelta other) const {
-    return delta_ != other.delta_;
-  }
-  bool operator<(TimeDelta other) const {
-    return delta_ < other.delta_;
-  }
-  bool operator<=(TimeDelta other) const {
-    return delta_ <= other.delta_;
-  }
-  bool operator>(TimeDelta other) const {
-    return delta_ > other.delta_;
-  }
-  bool operator>=(TimeDelta other) const {
-    return delta_ >= other.delta_;
-  }
-
- private:
-  friend int64_t time_internal::SaturatedAdd(TimeDelta delta, int64_t value);
-  friend int64_t time_internal::SaturatedSub(TimeDelta delta, int64_t value);
-
-  // Constructs a delta given the duration in microseconds. This is private
-  // to avoid confusion by callers with an integer constructor. Use
-  // FromSeconds, FromMilliseconds, etc. instead.
-  explicit TimeDelta(int64_t delta_us) : delta_(delta_us) {}
-
-  // Private method to build a delta from a double.
-  static TimeDelta FromDouble(double value);
-
-  // Delta in microseconds.
-  int64_t delta_;
-};
-
-template<typename T>
-inline TimeDelta operator*(T a, TimeDelta td) {
-  return td * a;
-}
-
-// For logging use only.
-BASE_EXPORT std::ostream& operator<<(std::ostream& os, TimeDelta time_delta);
-
-// Do not reference the time_internal::TimeBase template class directly.  Please
-// use one of the time subclasses instead, and only reference the public
-// TimeBase members via those classes.
-namespace time_internal {
-
-// TimeBase--------------------------------------------------------------------
-
-// Provides value storage and comparison/math operations common to all time
-// classes. Each subclass provides for strong type-checking to ensure
-// semantically meaningful comparison/math of time values from the same clock
-// source or timeline.
-template<class TimeClass>
-class TimeBase {
- public:
-  static const int64_t kHoursPerDay = 24;
-  static const int64_t kMillisecondsPerSecond = 1000;
-  static const int64_t kMillisecondsPerDay =
-      kMillisecondsPerSecond * 60 * 60 * kHoursPerDay;
-  static const int64_t kMicrosecondsPerMillisecond = 1000;
-  static const int64_t kMicrosecondsPerSecond =
-      kMicrosecondsPerMillisecond * kMillisecondsPerSecond;
-  static const int64_t kMicrosecondsPerMinute = kMicrosecondsPerSecond * 60;
-  static const int64_t kMicrosecondsPerHour = kMicrosecondsPerMinute * 60;
-  static const int64_t kMicrosecondsPerDay =
-      kMicrosecondsPerHour * kHoursPerDay;
-  static const int64_t kMicrosecondsPerWeek = kMicrosecondsPerDay * 7;
-  static const int64_t kNanosecondsPerMicrosecond = 1000;
-  static const int64_t kNanosecondsPerSecond =
-      kNanosecondsPerMicrosecond * kMicrosecondsPerSecond;
-
-  // Returns true if this object has not been initialized.
-  //
-  // Warning: Be careful when writing code that performs math on time values,
-  // since it's possible to produce a valid "zero" result that should not be
-  // interpreted as a "null" value.
-  bool is_null() const {
-    return us_ == 0;
-  }
-
-  // Returns true if this object represents the maximum time.
-  bool is_max() const { return us_ == std::numeric_limits<int64_t>::max(); }
-
-  // For serializing only. Use FromInternalValue() to reconstitute. Please don't
-  // use this and do arithmetic on it, as it is more error prone than using the
-  // provided operators.
-  int64_t ToInternalValue() const { return us_; }
-
-  TimeClass& operator=(TimeClass other) {
-    us_ = other.us_;
-    return *(static_cast<TimeClass*>(this));
-  }
-
-  // Compute the difference between two times.
-  TimeDelta operator-(TimeClass other) const {
-    return TimeDelta::FromMicroseconds(us_ - other.us_);
-  }
-
-  // Return a new time modified by some delta.
-  TimeClass operator+(TimeDelta delta) const {
-    return TimeClass(time_internal::SaturatedAdd(delta, us_));
-  }
-  TimeClass operator-(TimeDelta delta) const {
-    return TimeClass(-time_internal::SaturatedSub(delta, us_));
-  }
-
-  // Modify by some time delta.
-  TimeClass& operator+=(TimeDelta delta) {
-    return static_cast<TimeClass&>(*this = (*this + delta));
-  }
-  TimeClass& operator-=(TimeDelta delta) {
-    return static_cast<TimeClass&>(*this = (*this - delta));
-  }
-
-  // Comparison operators
-  bool operator==(TimeClass other) const {
-    return us_ == other.us_;
-  }
-  bool operator!=(TimeClass other) const {
-    return us_ != other.us_;
-  }
-  bool operator<(TimeClass other) const {
-    return us_ < other.us_;
-  }
-  bool operator<=(TimeClass other) const {
-    return us_ <= other.us_;
-  }
-  bool operator>(TimeClass other) const {
-    return us_ > other.us_;
-  }
-  bool operator>=(TimeClass other) const {
-    return us_ >= other.us_;
-  }
-
-  // Converts an integer value representing TimeClass to a class. This is used
-  // when deserializing a |TimeClass| structure, using a value known to be
-  // compatible. It is not provided as a constructor because the integer type
-  // may be unclear from the perspective of a caller.
-  static TimeClass FromInternalValue(int64_t us) { return TimeClass(us); }
-
- protected:
-  explicit TimeBase(int64_t us) : us_(us) {}
-
-  // Time value in a microsecond timebase.
-  int64_t us_;
-};
-
-}  // namespace time_internal
-
-template<class TimeClass>
-inline TimeClass operator+(TimeDelta delta, TimeClass t) {
-  return t + delta;
-}
-
-// Time -----------------------------------------------------------------------
-
-// Represents a wall clock time in UTC. Values are not guaranteed to be
-// monotonically non-decreasing and are subject to large amounts of skew.
-class BASE_EXPORT Time : public time_internal::TimeBase<Time> {
- public:
-  // The representation of Jan 1, 1970 UTC in microseconds since the
-  // platform-dependent epoch.
-  static const int64_t kTimeTToMicrosecondsOffset;
-
-#if !defined(OS_WIN)
-  // On Mac & Linux, this value is the delta from the Windows epoch of 1601 to
-  // the Posix delta of 1970. This is used for migrating between the old
-  // 1970-based epochs to the new 1601-based ones. It should be removed from
-  // this global header and put in the platform-specific ones when we remove the
-  // migration code.
-  static const int64_t kWindowsEpochDeltaMicroseconds;
-#else
-  // To avoid overflow in QPC to Microseconds calculations, since we multiply
-  // by kMicrosecondsPerSecond, then the QPC value should not exceed
-  // (2^63 - 1) / 1E6. If it exceeds that threshold, we divide then multiply.
-  enum : int64_t{kQPCOverflowThreshold = 0x8637BD05AF7};
-#endif
-
-  // Represents an exploded time that can be formatted nicely. This is kind of
-  // like the Win32 SYSTEMTIME structure or the Unix "struct tm" with a few
-  // additions and changes to prevent errors.
-  struct BASE_EXPORT Exploded {
-    int year;          // Four digit year "2007"
-    int month;         // 1-based month (values 1 = January, etc.)
-    int day_of_week;   // 0-based day of week (0 = Sunday, etc.)
-    int day_of_month;  // 1-based day of month (1-31)
-    int hour;          // Hour within the current day (0-23)
-    int minute;        // Minute within the current hour (0-59)
-    int second;        // Second within the current minute (0-59 plus leap
-                       //   seconds which may take it up to 60).
-    int millisecond;   // Milliseconds within the current second (0-999)
-
-    // A cursory test for whether the data members are within their
-    // respective ranges. A 'true' return value does not guarantee the
-    // Exploded value can be successfully converted to a Time value.
-    bool HasValidValues() const;
-  };
-
-  // Contains the NULL time. Use Time::Now() to get the current time.
-  Time() : TimeBase(0) {
-  }
-
-  // Returns the time for epoch in Unix-like system (Jan 1, 1970).
-  static Time UnixEpoch();
-
-  // Returns the current time. Watch out, the system might adjust its clock
-  // in which case time will actually go backwards. We don't guarantee that
-  // times are increasing, or that two calls to Now() won't be the same.
-  static Time Now();
-
-  // Returns the maximum time, which should be greater than any reasonable time
-  // with which we might compare it.
-  static Time Max();
-
-  // Returns the current time. Same as Now() except that this function always
-  // uses system time so that there are no discrepancies between the returned
-  // time and system time even on virtual environments including our test bot.
-  // For timing sensitive unittests, this function should be used.
-  static Time NowFromSystemTime();
-
-  // Converts to/from time_t in UTC and a Time class.
-  // TODO(brettw) this should be removed once everybody starts using the |Time|
-  // class.
-  static Time FromTimeT(time_t tt);
-  time_t ToTimeT() const;
-
-  // Converts time to/from a double which is the number of seconds since epoch
-  // (Jan 1, 1970).  Webkit uses this format to represent time.
-  // Because WebKit initializes double time value to 0 to indicate "not
-  // initialized", we map it to empty Time object that also means "not
-  // initialized".
-  static Time FromDoubleT(double dt);
-  double ToDoubleT() const;
-
-#if defined(OS_POSIX)
-  // Converts the timespec structure to time. MacOS X 10.8.3 (and tentatively,
-  // earlier versions) will have the |ts|'s tv_nsec component zeroed out,
-  // having a 1 second resolution, which agrees with
-  // https://developer.apple.com/legacy/library/#technotes/tn/tn1150.html#HFSPlusDates.
-  static Time FromTimeSpec(const timespec& ts);
-#endif
-
-  // Converts to/from the Javascript convention for times, a number of
-  // milliseconds since the epoch:
-  // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date/getTime.
-  static Time FromJsTime(double ms_since_epoch);
-  double ToJsTime() const;
-
-  // Converts to Java convention for times, a number of
-  // milliseconds since the epoch.
-  int64_t ToJavaTime() const;
-
-#if defined(OS_POSIX)
-  static Time FromTimeVal(struct timeval t);
-  struct timeval ToTimeVal() const;
-#endif
-
-#if defined(OS_MACOSX)
-  static Time FromCFAbsoluteTime(CFAbsoluteTime t);
-  CFAbsoluteTime ToCFAbsoluteTime() const;
-#endif
-
-#if defined(OS_WIN)
-  static Time FromFileTime(FILETIME ft);
-  FILETIME ToFileTime() const;
-
-  // The minimum time of a low resolution timer.  This is basically a windows
-  // constant of ~15.6ms.  While it does vary on some older OS versions, we'll
-  // treat it as static across all windows versions.
-  static const int kMinLowResolutionThresholdMs = 16;
-
-  // Enable or disable Windows high resolution timer.
-  static void EnableHighResolutionTimer(bool enable);
-
-  // Activates or deactivates the high resolution timer based on the |activate|
-  // flag.  If the HighResolutionTimer is not Enabled (see
-  // EnableHighResolutionTimer), this function will return false.  Otherwise
-  // returns true.  Each successful activate call must be paired with a
-  // subsequent deactivate call.
-  // All callers to activate the high resolution timer must eventually call
-  // this function to deactivate the high resolution timer.
-  static bool ActivateHighResolutionTimer(bool activate);
-
-  // Returns true if the high resolution timer is both enabled and activated.
-  // This is provided for testing only, and is not tracked in a thread-safe
-  // way.
-  static bool IsHighResolutionTimerInUse();
-#endif
-
-  // Converts an exploded structure representing either the local time or UTC
-  // into a Time class.
-  static Time FromUTCExploded(const Exploded& exploded) {
-    return FromExploded(false, exploded);
-  }
-  static Time FromLocalExploded(const Exploded& exploded) {
-    return FromExploded(true, exploded);
-  }
-
-  // Converts a string representation of time to a Time object.
-  // An example of a time string which is converted is as below:-
-  // "Tue, 15 Nov 1994 12:45:26 GMT". If the timezone is not specified
-  // in the input string, FromString assumes local time and FromUTCString
-  // assumes UTC. A timezone that cannot be parsed (e.g. "UTC" which is not
-  // specified in RFC822) is treated as if the timezone is not specified.
-  // TODO(iyengar) Move the FromString/FromTimeT/ToTimeT/FromFileTime to
-  // a new time converter class.
-  static bool FromString(const char* time_string, Time* parsed_time) {
-    return FromStringInternal(time_string, true, parsed_time);
-  }
-  static bool FromUTCString(const char* time_string, Time* parsed_time) {
-    return FromStringInternal(time_string, false, parsed_time);
-  }
-
-  // Fills the given exploded structure with either the local time or UTC from
-  // this time structure (containing UTC).
-  void UTCExplode(Exploded* exploded) const {
-    return Explode(false, exploded);
-  }
-  void LocalExplode(Exploded* exploded) const {
-    return Explode(true, exploded);
-  }
-
-  // Rounds this time down to the nearest day in local time. It will represent
-  // midnight on that day.
-  Time LocalMidnight() const;
-
- private:
-  friend class time_internal::TimeBase<Time>;
-
-  explicit Time(int64_t us) : TimeBase(us) {}
-
-  // Explodes the given time to either local time |is_local = true| or UTC
-  // |is_local = false|.
-  void Explode(bool is_local, Exploded* exploded) const;
-
-  // Unexplodes a given time assuming the source is either local time
-  // |is_local = true| or UTC |is_local = false|.
-  static Time FromExploded(bool is_local, const Exploded& exploded);
-
-  // Converts a string representation of time to a Time object.
-  // An example of a time string which is converted is as below:-
-  // "Tue, 15 Nov 1994 12:45:26 GMT". If the timezone is not specified
-  // in the input string, local time |is_local = true| or
-  // UTC |is_local = false| is assumed. A timezone that cannot be parsed
-  // (e.g. "UTC" which is not specified in RFC822) is treated as if the
-  // timezone is not specified.
-  static bool FromStringInternal(const char* time_string,
-                                 bool is_local,
-                                 Time* parsed_time);
-};
-
-// Inline the TimeDelta factory methods, for fast TimeDelta construction.
-
-// static
-inline TimeDelta TimeDelta::FromDays(int days) {
-  if (days == std::numeric_limits<int>::max())
-    return Max();
-  return TimeDelta(days * Time::kMicrosecondsPerDay);
-}
-
-// static
-inline TimeDelta TimeDelta::FromHours(int hours) {
-  if (hours == std::numeric_limits<int>::max())
-    return Max();
-  return TimeDelta(hours * Time::kMicrosecondsPerHour);
-}
-
-// static
-inline TimeDelta TimeDelta::FromMinutes(int minutes) {
-  if (minutes == std::numeric_limits<int>::max())
-    return Max();
-  return TimeDelta(minutes * Time::kMicrosecondsPerMinute);
-}
-
-// static
-inline TimeDelta TimeDelta::FromSeconds(int64_t secs) {
-  return TimeDelta(secs) * Time::kMicrosecondsPerSecond;
-}
-
-// static
-inline TimeDelta TimeDelta::FromMilliseconds(int64_t ms) {
-  return TimeDelta(ms) * Time::kMicrosecondsPerMillisecond;
-}
-
-// static
-inline TimeDelta TimeDelta::FromSecondsD(double secs) {
-  return FromDouble(secs * Time::kMicrosecondsPerSecond);
-}
-
-// static
-inline TimeDelta TimeDelta::FromMillisecondsD(double ms) {
-  return FromDouble(ms * Time::kMicrosecondsPerMillisecond);
-}
-
-// static
-inline TimeDelta TimeDelta::FromMicroseconds(int64_t us) {
-  return TimeDelta(us);
-}
-
-// static
-inline TimeDelta TimeDelta::FromDouble(double value) {
-  double max_magnitude = std::numeric_limits<int64_t>::max();
-  TimeDelta delta = TimeDelta(static_cast<int64_t>(value));
-  if (value > max_magnitude)
-    delta = Max();
-  else if (value < -max_magnitude)
-    delta = -Max();
-  return delta;
-}
-
-// For logging use only.
-BASE_EXPORT std::ostream& operator<<(std::ostream& os, Time time);
-
-// TimeTicks ------------------------------------------------------------------
-
-// Represents monotonically non-decreasing clock time.
-class BASE_EXPORT TimeTicks : public time_internal::TimeBase<TimeTicks> {
- public:
-  TimeTicks() : TimeBase(0) {
-  }
-
-  // Platform-dependent tick count representing "right now." When
-  // IsHighResolution() returns false, the resolution of the clock could be
-  // as coarse as ~15.6ms. Otherwise, the resolution should be no worse than one
-  // microsecond.
-  static TimeTicks Now();
-
-  // Returns true if the high resolution clock is working on this system and
-  // Now() will return high resolution values. Note that, on systems where the
-  // high resolution clock works but is deemed inefficient, the low resolution
-  // clock will be used instead.
-  static bool IsHighResolution();
-
-#if defined(OS_WIN)
-  // Translates an absolute QPC timestamp into a TimeTicks value. The returned
-  // value has the same origin as Now(). Do NOT attempt to use this if
-  // IsHighResolution() returns false.
-  static TimeTicks FromQPCValue(LONGLONG qpc_value);
-#endif
-
-  // Get an estimate of the TimeTick value at the time of the UnixEpoch. Because
-  // Time and TimeTicks respond differently to user-set time and NTP
-  // adjustments, this number is only an estimate. Nevertheless, this can be
-  // useful when you need to relate the value of TimeTicks to a real time and
-  // date. Note: Upon first invocation, this function takes a snapshot of the
-  // realtime clock to establish a reference point.  This function will return
-  // the same value for the duration of the application, but will be different
-  // in future application runs.
-  static TimeTicks UnixEpoch();
-
-  // Returns |this| snapped to the next tick, given a |tick_phase| and
-  // repeating |tick_interval| in both directions. |this| may be before,
-  // after, or equal to the |tick_phase|.
-  TimeTicks SnappedToNextTick(TimeTicks tick_phase,
-                              TimeDelta tick_interval) const;
-
-#if defined(OS_WIN)
- protected:
-  typedef DWORD (*TickFunctionType)(void);
-  static TickFunctionType SetMockTickFunction(TickFunctionType ticker);
-#endif
-
- private:
-  friend class time_internal::TimeBase<TimeTicks>;
-
-  // Please use Now() to create a new object. This is for internal use
-  // and testing.
-  explicit TimeTicks(int64_t us) : TimeBase(us) {}
-};
-
-// For logging use only.
-BASE_EXPORT std::ostream& operator<<(std::ostream& os, TimeTicks time_ticks);
-
-// ThreadTicks ----------------------------------------------------------------
-
-// Represents a clock, specific to a particular thread, than runs only while the
-// thread is running.
-class BASE_EXPORT ThreadTicks : public time_internal::TimeBase<ThreadTicks> {
- public:
-  ThreadTicks() : TimeBase(0) {
-  }
-
-  // Returns true if ThreadTicks::Now() is supported on this system.
-  static bool IsSupported() {
-#if (defined(_POSIX_THREAD_CPUTIME) && (_POSIX_THREAD_CPUTIME >= 0)) || \
-    (defined(OS_MACOSX) && !defined(OS_IOS)) || defined(OS_ANDROID)
-    return true;
-#elif defined(OS_WIN)
-    return IsSupportedWin();
-#else
-    return false;
-#endif
-  }
-
-  // Waits until the initialization is completed. Needs to be guarded with a
-  // call to IsSupported().
-  static void WaitUntilInitialized() {
-#if defined(OS_WIN)
-    WaitUntilInitializedWin();
-#endif
-  }
-
-  // Returns thread-specific CPU-time on systems that support this feature.
-  // Needs to be guarded with a call to IsSupported(). Use this timer
-  // to (approximately) measure how much time the calling thread spent doing
-  // actual work vs. being de-scheduled. May return bogus results if the thread
-  // migrates to another CPU between two calls. Returns an empty ThreadTicks
-  // object until the initialization is completed. If a clock reading is
-  // absolutely needed, call WaitUntilInitialized() before this method.
-  static ThreadTicks Now();
-
- private:
-  friend class time_internal::TimeBase<ThreadTicks>;
-
-  // Please use Now() to create a new object. This is for internal use
-  // and testing.
-  explicit ThreadTicks(int64_t us) : TimeBase(us) {}
-
-#if defined(OS_WIN)
-  FRIEND_TEST_ALL_PREFIXES(TimeTicks, TSCTicksPerSecond);
-
-  // Returns the frequency of the TSC in ticks per second, or 0 if it hasn't
-  // been measured yet. Needs to be guarded with a call to IsSupported().
-  // This method is declared here rather than in the anonymous namespace to
-  // allow testing.
-  static double TSCTicksPerSecond();
-
-  static bool IsSupportedWin();
-  static void WaitUntilInitializedWin();
-#endif
-};
-
-// For logging use only.
-BASE_EXPORT std::ostream& operator<<(std::ostream& os, ThreadTicks time_ticks);
-
-}  // namespace base
-
-#endif  // BASE_TIME_TIME_H_
diff --git a/security/sandbox/chromium/base/time/time_posix.cc b/security/sandbox/chromium/base/time/time_posix.cc
deleted file mode 100644
index 4aadee618..000000000
--- a/security/sandbox/chromium/base/time/time_posix.cc
+++ /dev/null
@@ -1,363 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/time/time.h"
-
-#include <stdint.h>
-#include <sys/time.h>
-#include <time.h>
-#if defined(OS_ANDROID) && !defined(__LP64__)
-#include <time64.h>
-#endif
-#include <unistd.h>
-
-#include <limits>
-#include <ostream>
-
-#include "base/logging.h"
-#include "build/build_config.h"
-
-#if defined(OS_ANDROID)
-#include "base/os_compat_android.h"
-#elif defined(OS_NACL)
-#include "base/os_compat_nacl.h"
-#endif
-
-#if !defined(OS_MACOSX)
-#include "base/lazy_instance.h"
-#include "base/synchronization/lock.h"
-#endif
-
-namespace {
-
-#if !defined(OS_MACOSX)
-// This prevents a crash on traversing the environment global and looking up
-// the 'TZ' variable in libc. See: crbug.com/390567.
-base::LazyInstance<base::Lock>::Leaky
-    g_sys_time_to_time_struct_lock = LAZY_INSTANCE_INITIALIZER;
-
-// Define a system-specific SysTime that wraps either to a time_t or
-// a time64_t depending on the host system, and associated convertion.
-// See crbug.com/162007
-#if defined(OS_ANDROID) && !defined(__LP64__)
-typedef time64_t SysTime;
-
-SysTime SysTimeFromTimeStruct(struct tm* timestruct, bool is_local) {
-  base::AutoLock locked(g_sys_time_to_time_struct_lock.Get());
-  if (is_local)
-    return mktime64(timestruct);
-  else
-    return timegm64(timestruct);
-}
-
-void SysTimeToTimeStruct(SysTime t, struct tm* timestruct, bool is_local) {
-  base::AutoLock locked(g_sys_time_to_time_struct_lock.Get());
-  if (is_local)
-    localtime64_r(&t, timestruct);
-  else
-    gmtime64_r(&t, timestruct);
-}
-
-#else  // OS_ANDROID && !__LP64__
-typedef time_t SysTime;
-
-SysTime SysTimeFromTimeStruct(struct tm* timestruct, bool is_local) {
-  base::AutoLock locked(g_sys_time_to_time_struct_lock.Get());
-  if (is_local)
-    return mktime(timestruct);
-  else
-    return timegm(timestruct);
-}
-
-void SysTimeToTimeStruct(SysTime t, struct tm* timestruct, bool is_local) {
-  base::AutoLock locked(g_sys_time_to_time_struct_lock.Get());
-  if (is_local)
-    localtime_r(&t, timestruct);
-  else
-    gmtime_r(&t, timestruct);
-}
-#endif  // OS_ANDROID
-
-int64_t ConvertTimespecToMicros(const struct timespec& ts) {
-  base::CheckedNumeric<int64_t> result(ts.tv_sec);
-  result *= base::Time::kMicrosecondsPerSecond;
-  result += (ts.tv_nsec / base::Time::kNanosecondsPerMicrosecond);
-  return result.ValueOrDie();
-}
-
-// Helper function to get results from clock_gettime() and convert to a
-// microsecond timebase. Minimum requirement is MONOTONIC_CLOCK to be supported
-// on the system. FreeBSD 6 has CLOCK_MONOTONIC but defines
-// _POSIX_MONOTONIC_CLOCK to -1.
-#if (defined(OS_POSIX) &&                                               \
-     defined(_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0) || \
-    defined(OS_BSD) || defined(OS_ANDROID)
-int64_t ClockNow(clockid_t clk_id) {
-  struct timespec ts;
-  if (clock_gettime(clk_id, &ts) != 0) {
-    NOTREACHED() << "clock_gettime(" << clk_id << ") failed.";
-    return 0;
-  }
-  return ConvertTimespecToMicros(ts);
-}
-#else  // _POSIX_MONOTONIC_CLOCK
-#error No usable tick clock function on this platform.
-#endif  // _POSIX_MONOTONIC_CLOCK
-#endif  // !defined(OS_MACOSX)
-
-}  // namespace
-
-namespace base {
-
-struct timespec TimeDelta::ToTimeSpec() const {
-  int64_t microseconds = InMicroseconds();
-  time_t seconds = 0;
-  if (microseconds >= Time::kMicrosecondsPerSecond) {
-    seconds = InSeconds();
-    microseconds -= seconds * Time::kMicrosecondsPerSecond;
-  }
-  struct timespec result =
-      {seconds,
-       static_cast<long>(microseconds * Time::kNanosecondsPerMicrosecond)};
-  return result;
-}
-
-#if !defined(OS_MACOSX)
-// The Time routines in this file use standard POSIX routines, or almost-
-// standard routines in the case of timegm.  We need to use a Mach-specific
-// function for TimeTicks::Now() on Mac OS X.
-
-// Time -----------------------------------------------------------------------
-
-// Windows uses a Gregorian epoch of 1601.  We need to match this internally
-// so that our time representations match across all platforms.  See bug 14734.
-//   irb(main):010:0> Time.at(0).getutc()
-//   => Thu Jan 01 00:00:00 UTC 1970
-//   irb(main):011:0> Time.at(-11644473600).getutc()
-//   => Mon Jan 01 00:00:00 UTC 1601
-static const int64_t kWindowsEpochDeltaSeconds = INT64_C(11644473600);
-
-// static
-const int64_t Time::kWindowsEpochDeltaMicroseconds =
-    kWindowsEpochDeltaSeconds * Time::kMicrosecondsPerSecond;
-
-// Some functions in time.cc use time_t directly, so we provide an offset
-// to convert from time_t (Unix epoch) and internal (Windows epoch).
-// static
-const int64_t Time::kTimeTToMicrosecondsOffset = kWindowsEpochDeltaMicroseconds;
-
-// static
-Time Time::Now() {
-  struct timeval tv;
-  struct timezone tz = { 0, 0 };  // UTC
-  if (gettimeofday(&tv, &tz) != 0) {
-    DCHECK(0) << "Could not determine time of day";
-    PLOG(ERROR) << "Call to gettimeofday failed.";
-    // Return null instead of uninitialized |tv| value, which contains random
-    // garbage data. This may result in the crash seen in crbug.com/147570.
-    return Time();
-  }
-  // Combine seconds and microseconds in a 64-bit field containing microseconds
-  // since the epoch.  That's enough for nearly 600 centuries.  Adjust from
-  // Unix (1970) to Windows (1601) epoch.
-  return Time((tv.tv_sec * kMicrosecondsPerSecond + tv.tv_usec) +
-      kWindowsEpochDeltaMicroseconds);
-}
-
-// static
-Time Time::NowFromSystemTime() {
-  // Just use Now() because Now() returns the system time.
-  return Now();
-}
-
-void Time::Explode(bool is_local, Exploded* exploded) const {
-  // Time stores times with microsecond resolution, but Exploded only carries
-  // millisecond resolution, so begin by being lossy.  Adjust from Windows
-  // epoch (1601) to Unix epoch (1970);
-  int64_t microseconds = us_ - kWindowsEpochDeltaMicroseconds;
-  // The following values are all rounded towards -infinity.
-  int64_t milliseconds;  // Milliseconds since epoch.
-  SysTime seconds;  // Seconds since epoch.
-  int millisecond;  // Exploded millisecond value (0-999).
-  if (microseconds >= 0) {
-    // Rounding towards -infinity <=> rounding towards 0, in this case.
-    milliseconds = microseconds / kMicrosecondsPerMillisecond;
-    seconds = milliseconds / kMillisecondsPerSecond;
-    millisecond = milliseconds % kMillisecondsPerSecond;
-  } else {
-    // Round these *down* (towards -infinity).
-    milliseconds = (microseconds - kMicrosecondsPerMillisecond + 1) /
-                   kMicrosecondsPerMillisecond;
-    seconds = (milliseconds - kMillisecondsPerSecond + 1) /
-              kMillisecondsPerSecond;
-    // Make this nonnegative (and between 0 and 999 inclusive).
-    millisecond = milliseconds % kMillisecondsPerSecond;
-    if (millisecond < 0)
-      millisecond += kMillisecondsPerSecond;
-  }
-
-  struct tm timestruct;
-  SysTimeToTimeStruct(seconds, &timestruct, is_local);
-
-  exploded->year         = timestruct.tm_year + 1900;
-  exploded->month        = timestruct.tm_mon + 1;
-  exploded->day_of_week  = timestruct.tm_wday;
-  exploded->day_of_month = timestruct.tm_mday;
-  exploded->hour         = timestruct.tm_hour;
-  exploded->minute       = timestruct.tm_min;
-  exploded->second       = timestruct.tm_sec;
-  exploded->millisecond  = millisecond;
-}
-
-// static
-Time Time::FromExploded(bool is_local, const Exploded& exploded) {
-  struct tm timestruct;
-  timestruct.tm_sec    = exploded.second;
-  timestruct.tm_min    = exploded.minute;
-  timestruct.tm_hour   = exploded.hour;
-  timestruct.tm_mday   = exploded.day_of_month;
-  timestruct.tm_mon    = exploded.month - 1;
-  timestruct.tm_year   = exploded.year - 1900;
-  timestruct.tm_wday   = exploded.day_of_week;  // mktime/timegm ignore this
-  timestruct.tm_yday   = 0;     // mktime/timegm ignore this
-  timestruct.tm_isdst  = -1;    // attempt to figure it out
-#if !defined(OS_NACL) && !defined(OS_SOLARIS)
-  timestruct.tm_gmtoff = 0;     // not a POSIX field, so mktime/timegm ignore
-  timestruct.tm_zone   = NULL;  // not a POSIX field, so mktime/timegm ignore
-#endif
-
-  int64_t milliseconds;
-  SysTime seconds;
-
-  // Certain exploded dates do not really exist due to daylight saving times,
-  // and this causes mktime() to return implementation-defined values when
-  // tm_isdst is set to -1. On Android, the function will return -1, while the
-  // C libraries of other platforms typically return a liberally-chosen value.
-  // Handling this requires the special code below.
-
-  // SysTimeFromTimeStruct() modifies the input structure, save current value.
-  struct tm timestruct0 = timestruct;
-
-  seconds = SysTimeFromTimeStruct(&timestruct, is_local);
-  if (seconds == -1) {
-    // Get the time values with tm_isdst == 0 and 1, then select the closest one
-    // to UTC 00:00:00 that isn't -1.
-    timestruct = timestruct0;
-    timestruct.tm_isdst = 0;
-    int64_t seconds_isdst0 = SysTimeFromTimeStruct(&timestruct, is_local);
-
-    timestruct = timestruct0;
-    timestruct.tm_isdst = 1;
-    int64_t seconds_isdst1 = SysTimeFromTimeStruct(&timestruct, is_local);
-
-    // seconds_isdst0 or seconds_isdst1 can be -1 for some timezones.
-    // E.g. "CLST" (Chile Summer Time) returns -1 for 'tm_isdt == 1'.
-    if (seconds_isdst0 < 0)
-      seconds = seconds_isdst1;
-    else if (seconds_isdst1 < 0)
-      seconds = seconds_isdst0;
-    else
-      seconds = std::min(seconds_isdst0, seconds_isdst1);
-  }
-
-  // Handle overflow.  Clamping the range to what mktime and timegm might
-  // return is the best that can be done here.  It's not ideal, but it's better
-  // than failing here or ignoring the overflow case and treating each time
-  // overflow as one second prior to the epoch.
-  if (seconds == -1 &&
-      (exploded.year < 1969 || exploded.year > 1970)) {
-    // If exploded.year is 1969 or 1970, take -1 as correct, with the
-    // time indicating 1 second prior to the epoch.  (1970 is allowed to handle
-    // time zone and DST offsets.)  Otherwise, return the most future or past
-    // time representable.  Assumes the time_t epoch is 1970-01-01 00:00:00 UTC.
-    //
-    // The minimum and maximum representible times that mktime and timegm could
-    // return are used here instead of values outside that range to allow for
-    // proper round-tripping between exploded and counter-type time
-    // representations in the presence of possible truncation to time_t by
-    // division and use with other functions that accept time_t.
-    //
-    // When representing the most distant time in the future, add in an extra
-    // 999ms to avoid the time being less than any other possible value that
-    // this function can return.
-
-    // On Android, SysTime is int64_t, special care must be taken to avoid
-    // overflows.
-    const int64_t min_seconds = (sizeof(SysTime) < sizeof(int64_t))
-                                    ? std::numeric_limits<SysTime>::min()
-                                    : std::numeric_limits<int32_t>::min();
-    const int64_t max_seconds = (sizeof(SysTime) < sizeof(int64_t))
-                                    ? std::numeric_limits<SysTime>::max()
-                                    : std::numeric_limits<int32_t>::max();
-    if (exploded.year < 1969) {
-      milliseconds = min_seconds * kMillisecondsPerSecond;
-    } else {
-      milliseconds = max_seconds * kMillisecondsPerSecond;
-      milliseconds += (kMillisecondsPerSecond - 1);
-    }
-  } else {
-    milliseconds = seconds * kMillisecondsPerSecond + exploded.millisecond;
-  }
-
-  // Adjust from Unix (1970) to Windows (1601) epoch.
-  return Time((milliseconds * kMicrosecondsPerMillisecond) +
-      kWindowsEpochDeltaMicroseconds);
-}
-
-// TimeTicks ------------------------------------------------------------------
-// static
-TimeTicks TimeTicks::Now() {
-  return TimeTicks(ClockNow(CLOCK_MONOTONIC));
-}
-
-// static
-bool TimeTicks::IsHighResolution() {
-  return true;
-}
-
-// static
-ThreadTicks ThreadTicks::Now() {
-#if (defined(_POSIX_THREAD_CPUTIME) && (_POSIX_THREAD_CPUTIME >= 0)) || \
-    defined(OS_ANDROID)
-  return ThreadTicks(ClockNow(CLOCK_THREAD_CPUTIME_ID));
-#else
-  NOTREACHED();
-  return ThreadTicks();
-#endif
-}
-
-#endif  // !OS_MACOSX
-
-// static
-Time Time::FromTimeVal(struct timeval t) {
-  DCHECK_LT(t.tv_usec, static_cast<int>(Time::kMicrosecondsPerSecond));
-  DCHECK_GE(t.tv_usec, 0);
-  if (t.tv_usec == 0 && t.tv_sec == 0)
-    return Time();
-  if (t.tv_usec == static_cast<suseconds_t>(Time::kMicrosecondsPerSecond) - 1 &&
-      t.tv_sec == std::numeric_limits<time_t>::max())
-    return Max();
-  return Time((static_cast<int64_t>(t.tv_sec) * Time::kMicrosecondsPerSecond) +
-              t.tv_usec + kTimeTToMicrosecondsOffset);
-}
-
-struct timeval Time::ToTimeVal() const {
-  struct timeval result;
-  if (is_null()) {
-    result.tv_sec = 0;
-    result.tv_usec = 0;
-    return result;
-  }
-  if (is_max()) {
-    result.tv_sec = std::numeric_limits<time_t>::max();
-    result.tv_usec = static_cast<suseconds_t>(Time::kMicrosecondsPerSecond) - 1;
-    return result;
-  }
-  int64_t us = us_ - kTimeTToMicrosecondsOffset;
-  result.tv_sec = us / Time::kMicrosecondsPerSecond;
-  result.tv_usec = us % Time::kMicrosecondsPerSecond;
-  return result;
-}
-
-}  // namespace base
diff --git a/security/sandbox/chromium/base/time/time_win.cc b/security/sandbox/chromium/base/time/time_win.cc
deleted file mode 100644
index dc968ad63..000000000
--- a/security/sandbox/chromium/base/time/time_win.cc
+++ /dev/null
@@ -1,616 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-
-// Windows Timer Primer
-//
-// A good article:  http://www.ddj.com/windows/184416651
-// A good mozilla bug:  http://bugzilla.mozilla.org/show_bug.cgi?id=363258
-//
-// The default windows timer, GetSystemTimeAsFileTime is not very precise.
-// It is only good to ~15.5ms.
-//
-// QueryPerformanceCounter is the logical choice for a high-precision timer.
-// However, it is known to be buggy on some hardware.  Specifically, it can
-// sometimes "jump".  On laptops, QPC can also be very expensive to call.
-// It's 3-4x slower than timeGetTime() on desktops, but can be 10x slower
-// on laptops.  A unittest exists which will show the relative cost of various
-// timers on any system.
-//
-// The next logical choice is timeGetTime().  timeGetTime has a precision of
-// 1ms, but only if you call APIs (timeBeginPeriod()) which affect all other
-// applications on the system.  By default, precision is only 15.5ms.
-// Unfortunately, we don't want to call timeBeginPeriod because we don't
-// want to affect other applications.  Further, on mobile platforms, use of
-// faster multimedia timers can hurt battery life.  See the intel
-// article about this here:
-// http://softwarecommunity.intel.com/articles/eng/1086.htm
-//
-// To work around all this, we're going to generally use timeGetTime().  We
-// will only increase the system-wide timer if we're not running on battery
-// power.
-
-#include "base/time/time.h"
-
-#pragma comment(lib, "winmm.lib")
-#include <windows.h>
-#include <mmsystem.h>
-#include <stdint.h>
-
-#include "base/bit_cast.h"
-#include "base/cpu.h"
-#include "base/lazy_instance.h"
-#include "base/logging.h"
-#include "base/synchronization/lock.h"
-
-using base::ThreadTicks;
-using base::Time;
-using base::TimeDelta;
-using base::TimeTicks;
-
-namespace {
-
-// From MSDN, FILETIME "Contains a 64-bit value representing the number of
-// 100-nanosecond intervals since January 1, 1601 (UTC)."
-int64_t FileTimeToMicroseconds(const FILETIME& ft) {
-  // Need to bit_cast to fix alignment, then divide by 10 to convert
-  // 100-nanoseconds to microseconds. This only works on little-endian
-  // machines.
-  return bit_cast<int64_t, FILETIME>(ft) / 10;
-}
-
-void MicrosecondsToFileTime(int64_t us, FILETIME* ft) {
-  DCHECK_GE(us, 0LL) << "Time is less than 0, negative values are not "
-      "representable in FILETIME";
-
-  // Multiply by 10 to convert microseconds to 100-nanoseconds. Bit_cast will
-  // handle alignment problems. This only works on little-endian machines.
-  *ft = bit_cast<FILETIME, int64_t>(us * 10);
-}
-
-int64_t CurrentWallclockMicroseconds() {
-  FILETIME ft;
-  ::GetSystemTimeAsFileTime(&ft);
-  return FileTimeToMicroseconds(ft);
-}
-
-// Time between resampling the un-granular clock for this API.  60 seconds.
-const int kMaxMillisecondsToAvoidDrift = 60 * Time::kMillisecondsPerSecond;
-
-int64_t initial_time = 0;
-TimeTicks initial_ticks;
-
-void InitializeClock() {
-  initial_ticks = TimeTicks::Now();
-  initial_time = CurrentWallclockMicroseconds();
-}
-
-// The two values that ActivateHighResolutionTimer uses to set the systemwide
-// timer interrupt frequency on Windows. It controls how precise timers are
-// but also has a big impact on battery life.
-const int kMinTimerIntervalHighResMs = 1;
-const int kMinTimerIntervalLowResMs = 4;
-// Track if kMinTimerIntervalHighResMs or kMinTimerIntervalLowResMs is active.
-bool g_high_res_timer_enabled = false;
-// How many times the high resolution timer has been called.
-uint32_t g_high_res_timer_count = 0;
-// The lock to control access to the above two variables.
-base::LazyInstance<base::Lock>::Leaky g_high_res_lock =
-    LAZY_INSTANCE_INITIALIZER;
-
-// Returns a pointer to the QueryThreadCycleTime() function from Windows.
-// Can't statically link to it because it is not available on XP.
-using QueryThreadCycleTimePtr = decltype(::QueryThreadCycleTime)*;
-QueryThreadCycleTimePtr GetQueryThreadCycleTimeFunction() {
-  static const QueryThreadCycleTimePtr query_thread_cycle_time_fn =
-      reinterpret_cast<QueryThreadCycleTimePtr>(::GetProcAddress(
-          ::GetModuleHandle(L"kernel32.dll"), "QueryThreadCycleTime"));
-  return query_thread_cycle_time_fn;
-}
-
-// Returns the current value of the performance counter.
-uint64_t QPCNowRaw() {
-  LARGE_INTEGER perf_counter_now = {};
-  // According to the MSDN documentation for QueryPerformanceCounter(), this
-  // will never fail on systems that run XP or later.
-  // https://msdn.microsoft.com/library/windows/desktop/ms644904.aspx
-  ::QueryPerformanceCounter(&perf_counter_now);
-  return perf_counter_now.QuadPart;
-}
-
-}  // namespace
-
-// Time -----------------------------------------------------------------------
-
-// The internal representation of Time uses FILETIME, whose epoch is 1601-01-01
-// 00:00:00 UTC.  ((1970-1601)*365+89)*24*60*60*1000*1000, where 89 is the
-// number of leap year days between 1601 and 1970: (1970-1601)/4 excluding
-// 1700, 1800, and 1900.
-// static
-const int64_t Time::kTimeTToMicrosecondsOffset = INT64_C(11644473600000000);
-
-// static
-Time Time::Now() {
-  if (initial_time == 0)
-    InitializeClock();
-
-  // We implement time using the high-resolution timers so that we can get
-  // timeouts which are smaller than 10-15ms.  If we just used
-  // CurrentWallclockMicroseconds(), we'd have the less-granular timer.
-  //
-  // To make this work, we initialize the clock (initial_time) and the
-  // counter (initial_ctr).  To compute the initial time, we can check
-  // the number of ticks that have elapsed, and compute the delta.
-  //
-  // To avoid any drift, we periodically resync the counters to the system
-  // clock.
-  while (true) {
-    TimeTicks ticks = TimeTicks::Now();
-
-    // Calculate the time elapsed since we started our timer
-    TimeDelta elapsed = ticks - initial_ticks;
-
-    // Check if enough time has elapsed that we need to resync the clock.
-    if (elapsed.InMilliseconds() > kMaxMillisecondsToAvoidDrift) {
-      InitializeClock();
-      continue;
-    }
-
-    return Time(elapsed + Time(initial_time));
-  }
-}
-
-// static
-Time Time::NowFromSystemTime() {
-  // Force resync.
-  InitializeClock();
-  return Time(initial_time);
-}
-
-// static
-Time Time::FromFileTime(FILETIME ft) {
-  if (bit_cast<int64_t, FILETIME>(ft) == 0)
-    return Time();
-  if (ft.dwHighDateTime == std::numeric_limits<DWORD>::max() &&
-      ft.dwLowDateTime == std::numeric_limits<DWORD>::max())
-    return Max();
-  return Time(FileTimeToMicroseconds(ft));
-}
-
-FILETIME Time::ToFileTime() const {
-  if (is_null())
-    return bit_cast<FILETIME, int64_t>(0);
-  if (is_max()) {
-    FILETIME result;
-    result.dwHighDateTime = std::numeric_limits<DWORD>::max();
-    result.dwLowDateTime = std::numeric_limits<DWORD>::max();
-    return result;
-  }
-  FILETIME utc_ft;
-  MicrosecondsToFileTime(us_, &utc_ft);
-  return utc_ft;
-}
-
-// static
-void Time::EnableHighResolutionTimer(bool enable) {
-  base::AutoLock lock(g_high_res_lock.Get());
-  if (g_high_res_timer_enabled == enable)
-    return;
-  g_high_res_timer_enabled = enable;
-  if (!g_high_res_timer_count)
-    return;
-  // Since g_high_res_timer_count != 0, an ActivateHighResolutionTimer(true)
-  // was called which called timeBeginPeriod with g_high_res_timer_enabled
-  // with a value which is the opposite of |enable|. With that information we
-  // call timeEndPeriod with the same value used in timeBeginPeriod and
-  // therefore undo the period effect.
-  if (enable) {
-    timeEndPeriod(kMinTimerIntervalLowResMs);
-    timeBeginPeriod(kMinTimerIntervalHighResMs);
-  } else {
-    timeEndPeriod(kMinTimerIntervalHighResMs);
-    timeBeginPeriod(kMinTimerIntervalLowResMs);
-  }
-}
-
-// static
-bool Time::ActivateHighResolutionTimer(bool activating) {
-  // We only do work on the transition from zero to one or one to zero so we
-  // can easily undo the effect (if necessary) when EnableHighResolutionTimer is
-  // called.
-  const uint32_t max = std::numeric_limits<uint32_t>::max();
-
-  base::AutoLock lock(g_high_res_lock.Get());
-  UINT period = g_high_res_timer_enabled ? kMinTimerIntervalHighResMs
-                                         : kMinTimerIntervalLowResMs;
-  if (activating) {
-    DCHECK_NE(g_high_res_timer_count, max);
-    ++g_high_res_timer_count;
-    if (g_high_res_timer_count == 1)
-      timeBeginPeriod(period);
-  } else {
-    DCHECK_NE(g_high_res_timer_count, 0u);
-    --g_high_res_timer_count;
-    if (g_high_res_timer_count == 0)
-      timeEndPeriod(period);
-  }
-  return (period == kMinTimerIntervalHighResMs);
-}
-
-// static
-bool Time::IsHighResolutionTimerInUse() {
-  base::AutoLock lock(g_high_res_lock.Get());
-  return g_high_res_timer_enabled && g_high_res_timer_count > 0;
-}
-
-// static
-Time Time::FromExploded(bool is_local, const Exploded& exploded) {
-  // Create the system struct representing our exploded time. It will either be
-  // in local time or UTC.
-  SYSTEMTIME st;
-  st.wYear = static_cast<WORD>(exploded.year);
-  st.wMonth = static_cast<WORD>(exploded.month);
-  st.wDayOfWeek = static_cast<WORD>(exploded.day_of_week);
-  st.wDay = static_cast<WORD>(exploded.day_of_month);
-  st.wHour = static_cast<WORD>(exploded.hour);
-  st.wMinute = static_cast<WORD>(exploded.minute);
-  st.wSecond = static_cast<WORD>(exploded.second);
-  st.wMilliseconds = static_cast<WORD>(exploded.millisecond);
-
-  FILETIME ft;
-  bool success = true;
-  // Ensure that it's in UTC.
-  if (is_local) {
-    SYSTEMTIME utc_st;
-    success = TzSpecificLocalTimeToSystemTime(NULL, &st, &utc_st) &&
-              SystemTimeToFileTime(&utc_st, &ft);
-  } else {
-    success = !!SystemTimeToFileTime(&st, &ft);
-  }
-
-  if (!success) {
-    NOTREACHED() << "Unable to convert time";
-    return Time(0);
-  }
-  return Time(FileTimeToMicroseconds(ft));
-}
-
-void Time::Explode(bool is_local, Exploded* exploded) const {
-  if (us_ < 0LL) {
-    // We are not able to convert it to FILETIME.
-    ZeroMemory(exploded, sizeof(*exploded));
-    return;
-  }
-
-  // FILETIME in UTC.
-  FILETIME utc_ft;
-  MicrosecondsToFileTime(us_, &utc_ft);
-
-  // FILETIME in local time if necessary.
-  bool success = true;
-  // FILETIME in SYSTEMTIME (exploded).
-  SYSTEMTIME st = {0};
-  if (is_local) {
-    SYSTEMTIME utc_st;
-    // We don't use FileTimeToLocalFileTime here, since it uses the current
-    // settings for the time zone and daylight saving time. Therefore, if it is
-    // daylight saving time, it will take daylight saving time into account,
-    // even if the time you are converting is in standard time.
-    success = FileTimeToSystemTime(&utc_ft, &utc_st) &&
-              SystemTimeToTzSpecificLocalTime(NULL, &utc_st, &st);
-  } else {
-    success = !!FileTimeToSystemTime(&utc_ft, &st);
-  }
-
-  if (!success) {
-    NOTREACHED() << "Unable to convert time, don't know why";
-    ZeroMemory(exploded, sizeof(*exploded));
-    return;
-  }
-
-  exploded->year = st.wYear;
-  exploded->month = st.wMonth;
-  exploded->day_of_week = st.wDayOfWeek;
-  exploded->day_of_month = st.wDay;
-  exploded->hour = st.wHour;
-  exploded->minute = st.wMinute;
-  exploded->second = st.wSecond;
-  exploded->millisecond = st.wMilliseconds;
-}
-
-// TimeTicks ------------------------------------------------------------------
-namespace {
-
-// We define a wrapper to adapt between the __stdcall and __cdecl call of the
-// mock function, and to avoid a static constructor.  Assigning an import to a
-// function pointer directly would require setup code to fetch from the IAT.
-DWORD timeGetTimeWrapper() {
-  return timeGetTime();
-}
-
-DWORD (*g_tick_function)(void) = &timeGetTimeWrapper;
-
-// Accumulation of time lost due to rollover (in milliseconds).
-int64_t g_rollover_ms = 0;
-
-// The last timeGetTime value we saw, to detect rollover.
-DWORD g_last_seen_now = 0;
-
-// Lock protecting rollover_ms and last_seen_now.
-// Note: this is a global object, and we usually avoid these. However, the time
-// code is low-level, and we don't want to use Singletons here (it would be too
-// easy to use a Singleton without even knowing it, and that may lead to many
-// gotchas). Its impact on startup time should be negligible due to low-level
-// nature of time code.
-base::Lock g_rollover_lock;
-
-// We use timeGetTime() to implement TimeTicks::Now().  This can be problematic
-// because it returns the number of milliseconds since Windows has started,
-// which will roll over the 32-bit value every ~49 days.  We try to track
-// rollover ourselves, which works if TimeTicks::Now() is called at least every
-// 49 days.
-TimeDelta RolloverProtectedNow() {
-  base::AutoLock locked(g_rollover_lock);
-  // We should hold the lock while calling tick_function to make sure that
-  // we keep last_seen_now stay correctly in sync.
-  DWORD now = g_tick_function();
-  if (now < g_last_seen_now)
-    g_rollover_ms += 0x100000000I64;  // ~49.7 days.
-  g_last_seen_now = now;
-  return TimeDelta::FromMilliseconds(now + g_rollover_ms);
-}
-
-// Discussion of tick counter options on Windows:
-//
-// (1) CPU cycle counter. (Retrieved via RDTSC)
-// The CPU counter provides the highest resolution time stamp and is the least
-// expensive to retrieve. However, on older CPUs, two issues can affect its
-// reliability: First it is maintained per processor and not synchronized
-// between processors. Also, the counters will change frequency due to thermal
-// and power changes, and stop in some states.
-//
-// (2) QueryPerformanceCounter (QPC). The QPC counter provides a high-
-// resolution (<1 microsecond) time stamp. On most hardware running today, it
-// auto-detects and uses the constant-rate RDTSC counter to provide extremely
-// efficient and reliable time stamps.
-//
-// On older CPUs where RDTSC is unreliable, it falls back to using more
-// expensive (20X to 40X more costly) alternate clocks, such as HPET or the ACPI
-// PM timer, and can involve system calls; and all this is up to the HAL (with
-// some help from ACPI). According to
-// http://blogs.msdn.com/oldnewthing/archive/2005/09/02/459952.aspx, in the
-// worst case, it gets the counter from the rollover interrupt on the
-// programmable interrupt timer. In best cases, the HAL may conclude that the
-// RDTSC counter runs at a constant frequency, then it uses that instead. On
-// multiprocessor machines, it will try to verify the values returned from
-// RDTSC on each processor are consistent with each other, and apply a handful
-// of workarounds for known buggy hardware. In other words, QPC is supposed to
-// give consistent results on a multiprocessor computer, but for older CPUs it
-// can be unreliable due bugs in BIOS or HAL.
-//
-// (3) System time. The system time provides a low-resolution (from ~1 to ~15.6
-// milliseconds) time stamp but is comparatively less expensive to retrieve and
-// more reliable. Time::EnableHighResolutionTimer() and
-// Time::ActivateHighResolutionTimer() can be called to alter the resolution of
-// this timer; and also other Windows applications can alter it, affecting this
-// one.
-
-using NowFunction = TimeDelta (*)(void);
-
-TimeDelta InitialNowFunction();
-
-// See "threading notes" in InitializeNowFunctionPointer() for details on how
-// concurrent reads/writes to these globals has been made safe.
-NowFunction g_now_function = &InitialNowFunction;
-int64_t g_qpc_ticks_per_second = 0;
-
-// As of January 2015, use of <atomic> is forbidden in Chromium code. This is
-// what std::atomic_thread_fence does on Windows on all Intel architectures when
-// the memory_order argument is anything but std::memory_order_seq_cst:
-#define ATOMIC_THREAD_FENCE(memory_order) _ReadWriteBarrier();
-
-TimeDelta QPCValueToTimeDelta(LONGLONG qpc_value) {
-  // Ensure that the assignment to |g_qpc_ticks_per_second|, made in
-  // InitializeNowFunctionPointer(), has happened by this point.
-  ATOMIC_THREAD_FENCE(memory_order_acquire);
-
-  DCHECK_GT(g_qpc_ticks_per_second, 0);
-
-  // If the QPC Value is below the overflow threshold, we proceed with
-  // simple multiply and divide.
-  if (qpc_value < Time::kQPCOverflowThreshold) {
-    return TimeDelta::FromMicroseconds(
-        qpc_value * Time::kMicrosecondsPerSecond / g_qpc_ticks_per_second);
-  }
-  // Otherwise, calculate microseconds in a round about manner to avoid
-  // overflow and precision issues.
-  int64_t whole_seconds = qpc_value / g_qpc_ticks_per_second;
-  int64_t leftover_ticks = qpc_value - (whole_seconds * g_qpc_ticks_per_second);
-  return TimeDelta::FromMicroseconds(
-      (whole_seconds * Time::kMicrosecondsPerSecond) +
-      ((leftover_ticks * Time::kMicrosecondsPerSecond) /
-       g_qpc_ticks_per_second));
-}
-
-TimeDelta QPCNow() {
-  return QPCValueToTimeDelta(QPCNowRaw());
-}
-
-bool IsBuggyAthlon(const base::CPU& cpu) {
-  // On Athlon X2 CPUs (e.g. model 15) QueryPerformanceCounter is unreliable.
-  return cpu.vendor_name() == "AuthenticAMD" && cpu.family() == 15;
-}
-
-void InitializeNowFunctionPointer() {
-  LARGE_INTEGER ticks_per_sec = {};
-  if (!QueryPerformanceFrequency(&ticks_per_sec))
-    ticks_per_sec.QuadPart = 0;
-
-  // If Windows cannot provide a QPC implementation, TimeTicks::Now() must use
-  // the low-resolution clock.
-  //
-  // If the QPC implementation is expensive and/or unreliable, TimeTicks::Now()
-  // will still use the low-resolution clock. A CPU lacking a non-stop time
-  // counter will cause Windows to provide an alternate QPC implementation that
-  // works, but is expensive to use. Certain Athlon CPUs are known to make the
-  // QPC implementation unreliable.
-  //
-  // Otherwise, Now uses the high-resolution QPC clock. As of 21 August 2015,
-  // ~72% of users fall within this category.
-  NowFunction now_function;
-  base::CPU cpu;
-  if (ticks_per_sec.QuadPart <= 0 ||
-      !cpu.has_non_stop_time_stamp_counter() || IsBuggyAthlon(cpu)) {
-    now_function = &RolloverProtectedNow;
-  } else {
-    now_function = &QPCNow;
-  }
-
-  // Threading note 1: In an unlikely race condition, it's possible for two or
-  // more threads to enter InitializeNowFunctionPointer() in parallel. This is
-  // not a problem since all threads should end up writing out the same values
-  // to the global variables.
-  //
-  // Threading note 2: A release fence is placed here to ensure, from the
-  // perspective of other threads using the function pointers, that the
-  // assignment to |g_qpc_ticks_per_second| happens before the function pointers
-  // are changed.
-  g_qpc_ticks_per_second = ticks_per_sec.QuadPart;
-  ATOMIC_THREAD_FENCE(memory_order_release);
-  g_now_function = now_function;
-}
-
-TimeDelta InitialNowFunction() {
-  InitializeNowFunctionPointer();
-  return g_now_function();
-}
-
-}  // namespace
-
-// static
-TimeTicks::TickFunctionType TimeTicks::SetMockTickFunction(
-    TickFunctionType ticker) {
-  base::AutoLock locked(g_rollover_lock);
-  TickFunctionType old = g_tick_function;
-  g_tick_function = ticker;
-  g_rollover_ms = 0;
-  g_last_seen_now = 0;
-  return old;
-}
-
-// static
-TimeTicks TimeTicks::Now() {
-  return TimeTicks() + g_now_function();
-}
-
-// static
-bool TimeTicks::IsHighResolution() {
-  if (g_now_function == &InitialNowFunction)
-    InitializeNowFunctionPointer();
-  return g_now_function == &QPCNow;
-}
-
-// static
-ThreadTicks ThreadTicks::Now() {
-  DCHECK(IsSupported());
-
-  // Get the number of TSC ticks used by the current thread.
-  ULONG64 thread_cycle_time = 0;
-  GetQueryThreadCycleTimeFunction()(::GetCurrentThread(), &thread_cycle_time);
-
-  // Get the frequency of the TSC.
-  double tsc_ticks_per_second = TSCTicksPerSecond();
-  if (tsc_ticks_per_second == 0)
-    return ThreadTicks();
-
-  // Return the CPU time of the current thread.
-  double thread_time_seconds = thread_cycle_time / tsc_ticks_per_second;
-  return ThreadTicks(
-      static_cast<int64_t>(thread_time_seconds * Time::kMicrosecondsPerSecond));
-}
-
-// static
-bool ThreadTicks::IsSupportedWin() {
-  static bool is_supported = GetQueryThreadCycleTimeFunction() &&
-                             base::CPU().has_non_stop_time_stamp_counter() &&
-                             !IsBuggyAthlon(base::CPU());
-  return is_supported;
-}
-
-// static
-void ThreadTicks::WaitUntilInitializedWin() {
-  while (TSCTicksPerSecond() == 0)
-    ::Sleep(10);
-}
-
-double ThreadTicks::TSCTicksPerSecond() {
-  DCHECK(IsSupported());
-
-  // The value returned by QueryPerformanceFrequency() cannot be used as the TSC
-  // frequency, because there is no guarantee that the TSC frequency is equal to
-  // the performance counter frequency.
-
-  // The TSC frequency is cached in a static variable because it takes some time
-  // to compute it.
-  static double tsc_ticks_per_second = 0;
-  if (tsc_ticks_per_second != 0)
-    return tsc_ticks_per_second;
-
-  // Increase the thread priority to reduces the chances of having a context
-  // switch during a reading of the TSC and the performance counter.
-  int previous_priority = ::GetThreadPriority(::GetCurrentThread());
-  ::SetThreadPriority(::GetCurrentThread(), THREAD_PRIORITY_HIGHEST);
-
-  // The first time that this function is called, make an initial reading of the
-  // TSC and the performance counter.
-  static const uint64_t tsc_initial = __rdtsc();
-  static const uint64_t perf_counter_initial = QPCNowRaw();
-
-  // Make a another reading of the TSC and the performance counter every time
-  // that this function is called.
-  uint64_t tsc_now = __rdtsc();
-  uint64_t perf_counter_now = QPCNowRaw();
-
-  // Reset the thread priority.
-  ::SetThreadPriority(::GetCurrentThread(), previous_priority);
-
-  // Make sure that at least 50 ms elapsed between the 2 readings. The first
-  // time that this function is called, we don't expect this to be the case.
-  // Note: The longer the elapsed time between the 2 readings is, the more
-  //   accurate the computed TSC frequency will be. The 50 ms value was
-  //   chosen because local benchmarks show that it allows us to get a
-  //   stddev of less than 1 tick/us between multiple runs.
-  // Note: According to the MSDN documentation for QueryPerformanceFrequency(),
-  //   this will never fail on systems that run XP or later.
-  //   https://msdn.microsoft.com/library/windows/desktop/ms644905.aspx
-  LARGE_INTEGER perf_counter_frequency = {};
-  ::QueryPerformanceFrequency(&perf_counter_frequency);
-  DCHECK_GE(perf_counter_now, perf_counter_initial);
-  uint64_t perf_counter_ticks = perf_counter_now - perf_counter_initial;
-  double elapsed_time_seconds =
-      perf_counter_ticks / static_cast<double>(perf_counter_frequency.QuadPart);
-
-  const double kMinimumEvaluationPeriodSeconds = 0.05;
-  if (elapsed_time_seconds < kMinimumEvaluationPeriodSeconds)
-    return 0;
-
-  // Compute the frequency of the TSC.
-  DCHECK_GE(tsc_now, tsc_initial);
-  uint64_t tsc_ticks = tsc_now - tsc_initial;
-  tsc_ticks_per_second = tsc_ticks / elapsed_time_seconds;
-
-  return tsc_ticks_per_second;
-}
-
-// static
-TimeTicks TimeTicks::FromQPCValue(LONGLONG qpc_value) {
-  return TimeTicks() + QPCValueToTimeDelta(qpc_value);
-}
-
-// TimeDelta ------------------------------------------------------------------
-
-// static
-TimeDelta TimeDelta::FromQPCValue(LONGLONG qpc_value) {
-  return QPCValueToTimeDelta(qpc_value);
-}