Add m-esr52 at 52.6.0

1 files changed, 1432 insertions, 0 deletions

diff --git a/dom/geolocation/nsGeolocation.cpp b/dom/geolocation/nsGeolocation.cpp
new file mode 100644
index 000000000..9fcdb350a
--- /dev/null
+++ b/dom/geolocation/nsGeolocation.cpp
@@ -0,0 +1,1432 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsXULAppAPI.h"
+
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/Telemetry.h"
+#include "mozilla/UniquePtr.h"
+
+#include "nsGeolocation.h"
+#include "nsDOMClassInfoID.h"
+#include "nsComponentManagerUtils.h"
+#include "nsServiceManagerUtils.h"
+#include "nsContentUtils.h"
+#include "nsContentPermissionHelper.h"
+#include "nsIDocument.h"
+#include "nsIObserverService.h"
+#include "nsPIDOMWindow.h"
+#include "nsThreadUtils.h"
+#include "mozilla/Services.h"
+#include "mozilla/Unused.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/WeakPtr.h"
+#include "mozilla/dom/PermissionMessageUtils.h"
+
+class nsIPrincipal;
+
+#ifdef MOZ_WIDGET_ANDROID
+#include "AndroidLocationProvider.h"
+#endif
+
+#ifdef MOZ_WIDGET_GONK
+#include "GonkGPSGeolocationProvider.h"
+#endif
+
+#ifdef MOZ_GPSD
+#include "GpsdLocationProvider.h"
+#endif
+
+#ifdef MOZ_WIDGET_COCOA
+#include "CoreLocationLocationProvider.h"
+#endif
+
+#ifdef XP_WIN
+#include "WindowsLocationProvider.h"
+#include "mozilla/WindowsVersion.h"
+#endif
+
+// Some limit to the number of get or watch geolocation requests
+// that a window can make.
+#define MAX_GEO_REQUESTS_PER_WINDOW  1500
+
+using mozilla::Unused;          // <snicker>
+using namespace mozilla;
+using namespace mozilla::dom;
+
+class nsGeolocationRequest final
+ : public nsIContentPermissionRequest
+ , public nsIGeolocationUpdate
+ , public SupportsWeakPtr<nsGeolocationRequest>
+{
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_NSICONTENTPERMISSIONREQUEST
+  NS_DECL_NSIGEOLOCATIONUPDATE
+
+  NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsGeolocationRequest, nsIContentPermissionRequest)
+
+  nsGeolocationRequest(Geolocation* aLocator,
+                       GeoPositionCallback aCallback,
+                       GeoPositionErrorCallback aErrorCallback,
+                       UniquePtr<PositionOptions>&& aOptions,
+                       uint8_t aProtocolType,
+                       bool aWatchPositionRequest = false,
+                       int32_t aWatchId = 0);
+
+  MOZ_DECLARE_WEAKREFERENCE_TYPENAME(nsGeolocationRequest)
+
+  void Shutdown();
+
+  void SendLocation(nsIDOMGeoPosition* aLocation);
+  bool WantsHighAccuracy() {return !mShutdown && mOptions && mOptions->mEnableHighAccuracy;}
+  void SetTimeoutTimer();
+  void StopTimeoutTimer();
+  void NotifyErrorAndShutdown(uint16_t);
+  nsIPrincipal* GetPrincipal();
+
+  bool IsWatch() { return mIsWatchPositionRequest; }
+  int32_t WatchId() { return mWatchId; }
+ private:
+  virtual ~nsGeolocationRequest();
+
+  class TimerCallbackHolder final : public nsITimerCallback
+  {
+  public:
+    NS_DECL_ISUPPORTS
+    NS_DECL_NSITIMERCALLBACK
+
+    explicit TimerCallbackHolder(nsGeolocationRequest* aRequest)
+      : mRequest(aRequest)
+    {}
+
+  private:
+    ~TimerCallbackHolder() {}
+    WeakPtr<nsGeolocationRequest> mRequest;
+  };
+
+  void Notify();
+
+  bool mIsWatchPositionRequest;
+
+  nsCOMPtr<nsITimer> mTimeoutTimer;
+  GeoPositionCallback mCallback;
+  GeoPositionErrorCallback mErrorCallback;
+  UniquePtr<PositionOptions> mOptions;
+
+  RefPtr<Geolocation> mLocator;
+
+  int32_t mWatchId;
+  bool mShutdown;
+  nsCOMPtr<nsIContentPermissionRequester> mRequester;
+  uint8_t mProtocolType;
+};
+
+static UniquePtr<PositionOptions>
+CreatePositionOptionsCopy(const PositionOptions& aOptions)
+{
+  UniquePtr<PositionOptions> geoOptions = MakeUnique<PositionOptions>();
+
+  geoOptions->mEnableHighAccuracy = aOptions.mEnableHighAccuracy;
+  geoOptions->mMaximumAge = aOptions.mMaximumAge;
+  geoOptions->mTimeout = aOptions.mTimeout;
+
+  return geoOptions;
+}
+
+class RequestPromptEvent : public Runnable
+{
+public:
+  RequestPromptEvent(nsGeolocationRequest* aRequest, nsWeakPtr aWindow)
+    : mRequest(aRequest)
+    , mWindow(aWindow)
+  {
+  }
+
+  NS_IMETHOD Run() override
+  {
+    nsCOMPtr<nsPIDOMWindowInner> window = do_QueryReferent(mWindow);
+    nsContentPermissionUtils::AskPermission(mRequest, window);
+    return NS_OK;
+  }
+
+private:
+  RefPtr<nsGeolocationRequest> mRequest;
+  nsWeakPtr mWindow;
+};
+
+class RequestAllowEvent : public Runnable
+{
+public:
+  RequestAllowEvent(int allow, nsGeolocationRequest* request)
+    : mAllow(allow),
+      mRequest(request)
+  {
+  }
+
+  NS_IMETHOD Run() override {
+    if (mAllow) {
+      mRequest->Allow(JS::UndefinedHandleValue);
+    } else {
+      mRequest->Cancel();
+    }
+    return NS_OK;
+  }
+
+private:
+  bool mAllow;
+  RefPtr<nsGeolocationRequest> mRequest;
+};
+
+class RequestSendLocationEvent : public Runnable
+{
+public:
+  RequestSendLocationEvent(nsIDOMGeoPosition* aPosition,
+                           nsGeolocationRequest* aRequest)
+    : mPosition(aPosition),
+      mRequest(aRequest)
+  {
+  }
+
+  NS_IMETHOD Run() override {
+    mRequest->SendLocation(mPosition);
+    return NS_OK;
+  }
+
+private:
+  nsCOMPtr<nsIDOMGeoPosition> mPosition;
+  RefPtr<nsGeolocationRequest> mRequest;
+  RefPtr<Geolocation> mLocator;
+};
+
+////////////////////////////////////////////////////
+// PositionError
+////////////////////////////////////////////////////
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(PositionError)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMGeoPositionError)
+  NS_INTERFACE_MAP_ENTRY(nsIDOMGeoPositionError)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(PositionError, mParent)
+NS_IMPL_CYCLE_COLLECTING_ADDREF(PositionError)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(PositionError)
+
+PositionError::PositionError(Geolocation* aParent, int16_t aCode)
+  : mCode(aCode)
+  , mParent(aParent)
+{
+}
+
+PositionError::~PositionError(){}
+
+
+NS_IMETHODIMP
+PositionError::GetCode(int16_t *aCode)
+{
+  NS_ENSURE_ARG_POINTER(aCode);
+  *aCode = Code();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PositionError::GetMessage(nsAString& aMessage)
+{
+  switch (mCode)
+  {
+    case nsIDOMGeoPositionError::PERMISSION_DENIED:
+      aMessage = NS_LITERAL_STRING("User denied geolocation prompt");
+      break;
+    case nsIDOMGeoPositionError::POSITION_UNAVAILABLE:
+      aMessage = NS_LITERAL_STRING("Unknown error acquiring position");
+      break;
+    case nsIDOMGeoPositionError::TIMEOUT:
+      aMessage = NS_LITERAL_STRING("Position acquisition timed out");
+      break;
+    default:
+      break;
+  }
+  return NS_OK;
+}
+
+Geolocation*
+PositionError::GetParentObject() const
+{
+  return mParent;
+}
+
+JSObject*
+PositionError::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return PositionErrorBinding::Wrap(aCx, this, aGivenProto);
+}
+
+void
+PositionError::NotifyCallback(const GeoPositionErrorCallback& aCallback)
+{
+  nsAutoMicroTask mt;
+  if (aCallback.HasWebIDLCallback()) {
+    PositionErrorCallback* callback = aCallback.GetWebIDLCallback();
+
+    if (callback) {
+      callback->Call(*this);
+    }
+  } else {
+    nsIDOMGeoPositionErrorCallback* callback = aCallback.GetXPCOMCallback();
+    if (callback) {
+      callback->HandleEvent(this);
+    }
+  }
+}
+////////////////////////////////////////////////////
+// nsGeolocationRequest
+////////////////////////////////////////////////////
+
+nsGeolocationRequest::nsGeolocationRequest(Geolocation* aLocator,
+                                           GeoPositionCallback aCallback,
+                                           GeoPositionErrorCallback aErrorCallback,
+                                           UniquePtr<PositionOptions>&& aOptions,
+                                           uint8_t aProtocolType,
+                                           bool aWatchPositionRequest,
+                                           int32_t aWatchId)
+  : mIsWatchPositionRequest(aWatchPositionRequest),
+    mCallback(Move(aCallback)),
+    mErrorCallback(Move(aErrorCallback)),
+    mOptions(Move(aOptions)),
+    mLocator(aLocator),
+    mWatchId(aWatchId),
+    mShutdown(false),
+    mProtocolType(aProtocolType)
+{
+  if (nsCOMPtr<nsPIDOMWindowInner> win =
+      do_QueryReferent(mLocator->GetOwner())) {
+    mRequester = new nsContentPermissionRequester(win);
+  }
+}
+
+nsGeolocationRequest::~nsGeolocationRequest()
+{
+  StopTimeoutTimer();
+}
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsGeolocationRequest)
+  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIContentPermissionRequest)
+  NS_INTERFACE_MAP_ENTRY(nsIContentPermissionRequest)
+  NS_INTERFACE_MAP_ENTRY(nsIGeolocationUpdate)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsGeolocationRequest)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsGeolocationRequest)
+NS_IMPL_CYCLE_COLLECTION(nsGeolocationRequest, mCallback, mErrorCallback, mLocator)
+
+void
+nsGeolocationRequest::Notify()
+{
+  SetTimeoutTimer();
+  NotifyErrorAndShutdown(nsIDOMGeoPositionError::TIMEOUT);
+}
+
+void
+nsGeolocationRequest::NotifyErrorAndShutdown(uint16_t aErrorCode)
+{
+  MOZ_ASSERT(!mShutdown, "timeout after shutdown");
+  if (!mIsWatchPositionRequest) {
+    Shutdown();
+    mLocator->RemoveRequest(this);
+  }
+
+  NotifyError(aErrorCode);
+}
+
+NS_IMETHODIMP
+nsGeolocationRequest::GetPrincipal(nsIPrincipal * *aRequestingPrincipal)
+{
+  NS_ENSURE_ARG_POINTER(aRequestingPrincipal);
+
+  nsCOMPtr<nsIPrincipal> principal = mLocator->GetPrincipal();
+  principal.forget(aRequestingPrincipal);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsGeolocationRequest::GetTypes(nsIArray** aTypes)
+{
+  nsTArray<nsString> emptyOptions;
+  return nsContentPermissionUtils::CreatePermissionArray(NS_LITERAL_CSTRING("geolocation"),
+                                                         NS_LITERAL_CSTRING("unused"),
+                                                         emptyOptions,
+                                                         aTypes);
+}
+
+NS_IMETHODIMP
+nsGeolocationRequest::GetWindow(mozIDOMWindow** aRequestingWindow)
+{
+  NS_ENSURE_ARG_POINTER(aRequestingWindow);
+
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryReferent(mLocator->GetOwner());
+  window.forget(aRequestingWindow);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsGeolocationRequest::GetElement(nsIDOMElement * *aRequestingElement)
+{
+  NS_ENSURE_ARG_POINTER(aRequestingElement);
+  *aRequestingElement = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsGeolocationRequest::Cancel()
+{
+  if (mRequester) {
+    // Record the number of denied requests for regular web content.
+    // This method is only called when the user explicitly denies the request,
+    // and is not called when the page is simply unloaded, or similar.
+    Telemetry::Accumulate(Telemetry::GEOLOCATION_REQUEST_GRANTED, mProtocolType);
+  }
+
+  if (mLocator->ClearPendingRequest(this)) {
+    return NS_OK;
+  }
+
+  NotifyError(nsIDOMGeoPositionError::PERMISSION_DENIED);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsGeolocationRequest::Allow(JS::HandleValue aChoices)
+{
+  MOZ_ASSERT(aChoices.isUndefined());
+
+  if (mRequester) {
+    // Record the number of granted requests for regular web content.
+    Telemetry::Accumulate(Telemetry::GEOLOCATION_REQUEST_GRANTED, mProtocolType + 10);
+
+    // Record whether a location callback is fulfilled while the owner window
+    // is not visible.
+    bool isVisible = false;
+    nsCOMPtr<nsPIDOMWindowInner> window = mLocator->GetParentObject();
+
+    if (window) {
+      nsCOMPtr<nsIDocument> doc = window->GetDoc();
+      isVisible = doc && !doc->Hidden();
+    }
+
+    if (IsWatch()) {
+      mozilla::Telemetry::Accumulate(mozilla::Telemetry::GEOLOCATION_WATCHPOSITION_VISIBLE, isVisible);
+    } else {
+      mozilla::Telemetry::Accumulate(mozilla::Telemetry::GEOLOCATION_GETCURRENTPOSITION_VISIBLE, isVisible);
+    }
+  }
+
+  if (mLocator->ClearPendingRequest(this)) {
+    return NS_OK;
+  }
+
+  RefPtr<nsGeolocationService> gs = nsGeolocationService::GetGeolocationService();
+
+  bool canUseCache = false;
+  CachedPositionAndAccuracy lastPosition = gs->GetCachedPosition();
+  if (lastPosition.position) {
+    DOMTimeStamp cachedPositionTime_ms;
+    lastPosition.position->GetTimestamp(&cachedPositionTime_ms);
+    // check to see if we can use a cached value
+    // if the user has specified a maximumAge, return a cached value.
+    if (mOptions && mOptions->mMaximumAge > 0) {
+      uint32_t maximumAge_ms = mOptions->mMaximumAge;
+      bool isCachedWithinRequestedAccuracy = WantsHighAccuracy() <= lastPosition.isHighAccuracy;
+      bool isCachedWithinRequestedTime =
+        DOMTimeStamp(PR_Now() / PR_USEC_PER_MSEC - maximumAge_ms) <= cachedPositionTime_ms;
+      canUseCache = isCachedWithinRequestedAccuracy && isCachedWithinRequestedTime;
+    }
+  }
+
+  gs->UpdateAccuracy(WantsHighAccuracy());
+  if (canUseCache) {
+    // okay, we can return a cached position
+    // getCurrentPosition requests serviced by the cache
+    // will now be owned by the RequestSendLocationEvent
+    Update(lastPosition.position);
+
+    // After Update is called, getCurrentPosition finishes it's job.
+    if (!mIsWatchPositionRequest) {
+      return NS_OK;
+    }
+
+  } else {
+    // if it is not a watch request and timeout is 0,
+    // invoke the errorCallback (if present) with TIMEOUT code
+    if (mOptions && mOptions->mTimeout == 0 && !mIsWatchPositionRequest) {
+      NotifyError(nsIDOMGeoPositionError::TIMEOUT);
+      return NS_OK;
+    }
+
+  }
+
+  // Kick off the geo device, if it isn't already running
+  nsresult rv = gs->StartDevice(GetPrincipal());
+
+  if (NS_FAILED(rv)) {
+    // Location provider error
+    NotifyError(nsIDOMGeoPositionError::POSITION_UNAVAILABLE);
+    return NS_OK;
+  }
+
+  if (mIsWatchPositionRequest || !canUseCache) {
+    // let the locator know we're pending
+    // we will now be owned by the locator
+    mLocator->NotifyAllowedRequest(this);
+  }
+
+  SetTimeoutTimer();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsGeolocationRequest::GetRequester(nsIContentPermissionRequester** aRequester)
+{
+  NS_ENSURE_ARG_POINTER(aRequester);
+
+  nsCOMPtr<nsIContentPermissionRequester> requester = mRequester;
+  requester.forget(aRequester);
+
+  return NS_OK;
+}
+
+void
+nsGeolocationRequest::SetTimeoutTimer()
+{
+  MOZ_ASSERT(!mShutdown, "set timeout after shutdown");
+
+  StopTimeoutTimer();
+
+  if (mOptions && mOptions->mTimeout != 0 && mOptions->mTimeout != 0x7fffffff) {
+    mTimeoutTimer = do_CreateInstance("@mozilla.org/timer;1");
+    RefPtr<TimerCallbackHolder> holder = new TimerCallbackHolder(this);
+    mTimeoutTimer->InitWithCallback(holder, mOptions->mTimeout, nsITimer::TYPE_ONE_SHOT);
+  }
+}
+
+void
+nsGeolocationRequest::StopTimeoutTimer()
+{
+  if (mTimeoutTimer) {
+    mTimeoutTimer->Cancel();
+    mTimeoutTimer = nullptr;
+  }
+}
+
+void
+nsGeolocationRequest::SendLocation(nsIDOMGeoPosition* aPosition)
+{
+  if (mShutdown) {
+    // Ignore SendLocationEvents issued before we were cleared.
+    return;
+  }
+
+  if (mOptions && mOptions->mMaximumAge > 0) {
+    DOMTimeStamp positionTime_ms;
+    aPosition->GetTimestamp(&positionTime_ms);
+    const uint32_t maximumAge_ms = mOptions->mMaximumAge;
+    const bool isTooOld =
+        DOMTimeStamp(PR_Now() / PR_USEC_PER_MSEC - maximumAge_ms) > positionTime_ms;
+    if (isTooOld) {
+      return;
+    }
+  }
+
+  RefPtr<Position> wrapped;
+
+  if (aPosition) {
+    nsCOMPtr<nsIDOMGeoPositionCoords> coords;
+    aPosition->GetCoords(getter_AddRefs(coords));
+    if (coords) {
+      wrapped = new Position(ToSupports(mLocator), aPosition);
+    }
+  }
+
+  if (!wrapped) {
+    NotifyError(nsIDOMGeoPositionError::POSITION_UNAVAILABLE);
+    return;
+  }
+
+  if (!mIsWatchPositionRequest) {
+    // Cancel timer and position updates in case the position
+    // callback spins the event loop
+    Shutdown();
+  }
+
+  nsAutoMicroTask mt;
+  if (mCallback.HasWebIDLCallback()) {
+    PositionCallback* callback = mCallback.GetWebIDLCallback();
+
+    MOZ_ASSERT(callback);
+    callback->Call(*wrapped);
+  } else {
+    nsIDOMGeoPositionCallback* callback = mCallback.GetXPCOMCallback();
+    MOZ_ASSERT(callback);
+    callback->HandleEvent(aPosition);
+  }
+
+  if (mIsWatchPositionRequest && !mShutdown) {
+    SetTimeoutTimer();
+  }
+  MOZ_ASSERT(mShutdown || mIsWatchPositionRequest,
+             "non-shutdown getCurrentPosition request after callback!");
+}
+
+nsIPrincipal*
+nsGeolocationRequest::GetPrincipal()
+{
+  if (!mLocator) {
+    return nullptr;
+  }
+  return mLocator->GetPrincipal();
+}
+
+NS_IMETHODIMP
+nsGeolocationRequest::Update(nsIDOMGeoPosition* aPosition)
+{
+  nsCOMPtr<nsIRunnable> ev = new RequestSendLocationEvent(aPosition, this);
+  NS_DispatchToMainThread(ev);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsGeolocationRequest::NotifyError(uint16_t aErrorCode)
+{
+  MOZ_ASSERT(NS_IsMainThread());
+  RefPtr<PositionError> positionError = new PositionError(mLocator, aErrorCode);
+  positionError->NotifyCallback(mErrorCallback);
+  return NS_OK;
+}
+
+void
+nsGeolocationRequest::Shutdown()
+{
+  MOZ_ASSERT(!mShutdown, "request shutdown twice");
+  mShutdown = true;
+
+  StopTimeoutTimer();
+
+  // If there are no other high accuracy requests, the geolocation service will
+  // notify the provider to switch to the default accuracy.
+  if (mOptions && mOptions->mEnableHighAccuracy) {
+    RefPtr<nsGeolocationService> gs = nsGeolocationService::GetGeolocationService();
+    if (gs) {
+      gs->UpdateAccuracy();
+    }
+  }
+}
+
+
+////////////////////////////////////////////////////
+// nsGeolocationRequest::TimerCallbackHolder
+////////////////////////////////////////////////////
+
+NS_IMPL_ISUPPORTS(nsGeolocationRequest::TimerCallbackHolder, nsISupports, nsITimerCallback)
+
+NS_IMETHODIMP
+nsGeolocationRequest::TimerCallbackHolder::Notify(nsITimer*)
+{
+  if (mRequest && mRequest->mLocator) {
+    RefPtr<nsGeolocationRequest> request(mRequest);
+    request->Notify();
+  }
+
+  return NS_OK;
+}
+
+
+////////////////////////////////////////////////////
+// nsGeolocationService
+////////////////////////////////////////////////////
+NS_INTERFACE_MAP_BEGIN(nsGeolocationService)
+  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIGeolocationUpdate)
+  NS_INTERFACE_MAP_ENTRY(nsIGeolocationUpdate)
+  NS_INTERFACE_MAP_ENTRY(nsIObserver)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_ADDREF(nsGeolocationService)
+NS_IMPL_RELEASE(nsGeolocationService)
+
+
+static bool sGeoEnabled = true;
+static int32_t sProviderTimeout = 6000; // Time, in milliseconds, to wait for the location provider to spin up.
+
+nsresult nsGeolocationService::Init()
+{
+  Preferences::AddIntVarCache(&sProviderTimeout, "geo.timeout", sProviderTimeout);
+  Preferences::AddBoolVarCache(&sGeoEnabled, "geo.enabled", sGeoEnabled);
+
+  if (!sGeoEnabled) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (XRE_IsContentProcess()) {
+    return NS_OK;
+  }
+
+  // geolocation service can be enabled -> now register observer
+  nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
+  if (!obs) {
+    return NS_ERROR_FAILURE;
+  }
+
+  obs->AddObserver(this, "xpcom-shutdown", false);
+
+#ifdef MOZ_WIDGET_ANDROID
+  mProvider = new AndroidLocationProvider();
+#endif
+
+#ifdef MOZ_WIDGET_GONK
+  // GonkGPSGeolocationProvider can be started at boot up time for initialization reasons.
+  // do_getService gets hold of the already initialized component and starts
+  // processing location requests immediately.
+  // do_Createinstance will create multiple instances of the provider which is not right.
+  // bug 993041
+  mProvider = do_GetService(GONK_GPS_GEOLOCATION_PROVIDER_CONTRACTID);
+#endif
+
+#ifdef MOZ_WIDGET_GTK
+#ifdef MOZ_GPSD
+  if (Preferences::GetBool("geo.provider.use_gpsd", false)) {
+    mProvider = new GpsdLocationProvider();
+  }
+#endif
+#endif
+
+#ifdef MOZ_WIDGET_COCOA
+  if (Preferences::GetBool("geo.provider.use_corelocation", true)) {
+    mProvider = new CoreLocationLocationProvider();
+  }
+#endif
+
+#ifdef XP_WIN
+  if (Preferences::GetBool("geo.provider.ms-windows-location", false) &&
+      IsWin8OrLater()) {
+    mProvider = new WindowsLocationProvider();
+  }
+#endif
+
+  if (Preferences::GetBool("geo.provider.use_mls", false)) {
+    mProvider = do_CreateInstance("@mozilla.org/geolocation/mls-provider;1");
+  }
+
+  // Override platform-specific providers with the default (network)
+  // provider while testing. Our tests are currently not meant to exercise
+  // the provider, and some tests rely on the network provider being used.
+  // "geo.provider.testing" is always set for all plain and browser chrome
+  // mochitests, and also for xpcshell tests.
+  if (!mProvider || Preferences::GetBool("geo.provider.testing", false)) {
+    nsCOMPtr<nsIGeolocationProvider> override =
+      do_GetService(NS_GEOLOCATION_PROVIDER_CONTRACTID);
+
+    if (override) {
+      mProvider = override;
+    }
+  }
+
+  return NS_OK;
+}
+
+nsGeolocationService::~nsGeolocationService()
+{
+}
+
+NS_IMETHODIMP
+nsGeolocationService::Observe(nsISupports* aSubject,
+                              const char* aTopic,
+                              const char16_t* aData)
+{
+  if (!strcmp("xpcom-shutdown", aTopic)) {
+    nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
+    if (obs) {
+      obs->RemoveObserver(this, "xpcom-shutdown");
+    }
+
+    for (uint32_t i = 0; i< mGeolocators.Length(); i++) {
+      mGeolocators[i]->Shutdown();
+    }
+    StopDevice();
+
+    return NS_OK;
+  }
+
+  if (!strcmp("timer-callback", aTopic)) {
+    // decide if we can close down the service.
+    for (uint32_t i = 0; i< mGeolocators.Length(); i++)
+      if (mGeolocators[i]->HasActiveCallbacks()) {
+        SetDisconnectTimer();
+        return NS_OK;
+      }
+
+    // okay to close up.
+    StopDevice();
+    Update(nullptr);
+    return NS_OK;
+  }
+
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsGeolocationService::Update(nsIDOMGeoPosition *aSomewhere)
+{
+  if (aSomewhere) {
+    SetCachedPosition(aSomewhere);
+  }
+
+  for (uint32_t i = 0; i< mGeolocators.Length(); i++) {
+    mGeolocators[i]->Update(aSomewhere);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsGeolocationService::NotifyError(uint16_t aErrorCode)
+{
+  for (uint32_t i = 0; i < mGeolocators.Length(); i++) {
+    mGeolocators[i]->NotifyError(aErrorCode);
+  }
+  return NS_OK;
+}
+
+void
+nsGeolocationService::SetCachedPosition(nsIDOMGeoPosition* aPosition)
+{
+  mLastPosition.position = aPosition;
+  mLastPosition.isHighAccuracy = mHigherAccuracy;
+}
+
+CachedPositionAndAccuracy
+nsGeolocationService::GetCachedPosition()
+{
+  return mLastPosition;
+}
+
+nsresult
+nsGeolocationService::StartDevice(nsIPrincipal *aPrincipal)
+{
+  if (!sGeoEnabled) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  // We do not want to keep the geolocation devices online
+  // indefinitely.
+  // Close them down after a reasonable period of inactivivity.
+  SetDisconnectTimer();
+
+  if (XRE_IsContentProcess()) {
+    ContentChild* cpc = ContentChild::GetSingleton();
+    cpc->SendAddGeolocationListener(IPC::Principal(aPrincipal),
+                                    HighAccuracyRequested());
+    return NS_OK;
+  }
+
+  // Start them up!
+  nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
+  if (!obs) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (!mProvider) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsresult rv;
+
+  if (NS_FAILED(rv = mProvider->Startup()) ||
+      NS_FAILED(rv = mProvider->Watch(this))) {
+
+    NotifyError(nsIDOMGeoPositionError::POSITION_UNAVAILABLE);
+    return rv;
+  }
+
+  obs->NotifyObservers(mProvider,
+                       "geolocation-device-events",
+                       u"starting");
+
+  return NS_OK;
+}
+
+void
+nsGeolocationService::SetDisconnectTimer()
+{
+  if (!mDisconnectTimer) {
+    mDisconnectTimer = do_CreateInstance("@mozilla.org/timer;1");
+  } else {
+    mDisconnectTimer->Cancel();
+  }
+
+  mDisconnectTimer->Init(this,
+                         sProviderTimeout,
+                         nsITimer::TYPE_ONE_SHOT);
+}
+
+bool
+nsGeolocationService::HighAccuracyRequested()
+{
+  for (uint32_t i = 0; i < mGeolocators.Length(); i++) {
+    if (mGeolocators[i]->HighAccuracyRequested()) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+void
+nsGeolocationService::UpdateAccuracy(bool aForceHigh)
+{
+  bool highRequired = aForceHigh || HighAccuracyRequested();
+
+  if (XRE_IsContentProcess()) {
+    ContentChild* cpc = ContentChild::GetSingleton();
+    if (cpc->IsAlive()) {
+      cpc->SendSetGeolocationHigherAccuracy(highRequired);
+    }
+
+    return;
+  }
+
+  mProvider->SetHighAccuracy(!mHigherAccuracy && highRequired);
+  mHigherAccuracy = highRequired;
+}
+
+void
+nsGeolocationService::StopDevice()
+{
+  if (mDisconnectTimer) {
+    mDisconnectTimer->Cancel();
+    mDisconnectTimer = nullptr;
+  }
+
+  if (XRE_IsContentProcess()) {
+    ContentChild* cpc = ContentChild::GetSingleton();
+    cpc->SendRemoveGeolocationListener();
+
+    return; // bail early
+  }
+
+  nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
+  if (!obs) {
+    return;
+  }
+
+  if (!mProvider) {
+    return;
+  }
+
+  mHigherAccuracy = false;
+
+  mProvider->Shutdown();
+  obs->NotifyObservers(mProvider,
+                       "geolocation-device-events",
+                       u"shutdown");
+}
+
+StaticRefPtr<nsGeolocationService> nsGeolocationService::sService;
+
+already_AddRefed<nsGeolocationService>
+nsGeolocationService::GetGeolocationService()
+{
+  RefPtr<nsGeolocationService> result;
+  if (nsGeolocationService::sService) {
+    result = nsGeolocationService::sService;
+
+    return result.forget();
+  }
+
+  result = new nsGeolocationService();
+  if (NS_FAILED(result->Init())) {
+    return nullptr;
+  }
+
+  ClearOnShutdown(&nsGeolocationService::sService);
+  nsGeolocationService::sService = result;
+  return result.forget();
+}
+
+void
+nsGeolocationService::AddLocator(Geolocation* aLocator)
+{
+  mGeolocators.AppendElement(aLocator);
+}
+
+void
+nsGeolocationService::RemoveLocator(Geolocation* aLocator)
+{
+  mGeolocators.RemoveElement(aLocator);
+}
+
+////////////////////////////////////////////////////
+// Geolocation
+////////////////////////////////////////////////////
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Geolocation)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMGeoGeolocation)
+  NS_INTERFACE_MAP_ENTRY(nsIDOMGeoGeolocation)
+  NS_INTERFACE_MAP_ENTRY(nsIGeolocationUpdate)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(Geolocation)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(Geolocation)
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Geolocation,
+                                      mPendingCallbacks,
+                                      mWatchingCallbacks,
+                                      mPendingRequests)
+
+Geolocation::Geolocation()
+: mProtocolType(ProtocolType::OTHER)
+, mLastWatchId(0)
+{
+}
+
+Geolocation::~Geolocation()
+{
+  if (mService) {
+    Shutdown();
+  }
+}
+
+nsresult
+Geolocation::Init(nsPIDOMWindowInner* aContentDom)
+{
+  // Remember the window
+  if (aContentDom) {
+    mOwner = do_GetWeakReference(aContentDom);
+    if (!mOwner) {
+      return NS_ERROR_FAILURE;
+    }
+
+    // Grab the principal of the document
+    nsCOMPtr<nsIDocument> doc = aContentDom->GetDoc();
+    if (!doc) {
+      return NS_ERROR_FAILURE;
+    }
+
+    mPrincipal = doc->NodePrincipal();
+
+    nsCOMPtr<nsIURI> uri;
+    nsresult rv = mPrincipal->GetURI(getter_AddRefs(uri));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    if (uri) {
+      bool isHttp;
+      rv = uri->SchemeIs("http", &isHttp);
+      NS_ENSURE_SUCCESS(rv, rv);
+
+      bool isHttps;
+      rv = uri->SchemeIs("https", &isHttps);
+      NS_ENSURE_SUCCESS(rv, rv);
+
+      // Store the protocol to send via telemetry later.
+      if (isHttp) {
+        mProtocolType = ProtocolType::HTTP;
+      } else if (isHttps) {
+        mProtocolType = ProtocolType::HTTPS;
+      }
+    }
+  }
+
+  // If no aContentDom was passed into us, we are being used
+  // by chrome/c++ and have no mOwner, no mPrincipal, and no need
+  // to prompt.
+  mService = nsGeolocationService::GetGeolocationService();
+  if (mService) {
+    mService->AddLocator(this);
+  }
+
+  return NS_OK;
+}
+
+void
+Geolocation::Shutdown()
+{
+  // Release all callbacks
+  mPendingCallbacks.Clear();
+  mWatchingCallbacks.Clear();
+
+  if (mService) {
+    mService->RemoveLocator(this);
+    mService->UpdateAccuracy();
+  }
+
+  mService = nullptr;
+  mPrincipal = nullptr;
+}
+
+nsPIDOMWindowInner*
+Geolocation::GetParentObject() const {
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryReferent(mOwner);
+  return window.get();
+}
+
+bool
+Geolocation::HasActiveCallbacks()
+{
+  return mPendingCallbacks.Length() || mWatchingCallbacks.Length();
+}
+
+bool
+Geolocation::HighAccuracyRequested()
+{
+  for (uint32_t i = 0; i < mWatchingCallbacks.Length(); i++) {
+    if (mWatchingCallbacks[i]->WantsHighAccuracy()) {
+      return true;
+    }
+  }
+
+  for (uint32_t i = 0; i < mPendingCallbacks.Length(); i++) {
+    if (mPendingCallbacks[i]->WantsHighAccuracy()) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+void
+Geolocation::RemoveRequest(nsGeolocationRequest* aRequest)
+{
+  bool requestWasKnown =
+    (mPendingCallbacks.RemoveElement(aRequest) !=
+     mWatchingCallbacks.RemoveElement(aRequest));
+
+  Unused << requestWasKnown;
+}
+
+NS_IMETHODIMP
+Geolocation::Update(nsIDOMGeoPosition *aSomewhere)
+{
+  if (!WindowOwnerStillExists()) {
+    Shutdown();
+    return NS_OK;
+  }
+
+  if (aSomewhere) {
+    nsCOMPtr<nsIDOMGeoPositionCoords> coords;
+    aSomewhere->GetCoords(getter_AddRefs(coords));
+    if (coords) {
+      double accuracy = -1;
+      coords->GetAccuracy(&accuracy);
+      mozilla::Telemetry::Accumulate(mozilla::Telemetry::GEOLOCATION_ACCURACY_EXPONENTIAL, accuracy);
+    }
+  }
+
+  for (uint32_t i = mPendingCallbacks.Length(); i > 0; i--) {
+    mPendingCallbacks[i-1]->Update(aSomewhere);
+    RemoveRequest(mPendingCallbacks[i-1]);
+  }
+
+  // notify everyone that is watching
+  for (uint32_t i = 0; i < mWatchingCallbacks.Length(); i++) {
+    mWatchingCallbacks[i]->Update(aSomewhere);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Geolocation::NotifyError(uint16_t aErrorCode)
+{
+  if (!WindowOwnerStillExists()) {
+    Shutdown();
+    return NS_OK;
+  }
+
+  mozilla::Telemetry::Accumulate(mozilla::Telemetry::GEOLOCATION_ERROR, true);
+
+  for (uint32_t i = mPendingCallbacks.Length(); i > 0; i--) {
+    mPendingCallbacks[i-1]->NotifyErrorAndShutdown(aErrorCode);
+    //NotifyErrorAndShutdown() removes the request from the array
+  }
+
+  // notify everyone that is watching
+  for (uint32_t i = 0; i < mWatchingCallbacks.Length(); i++) {
+    mWatchingCallbacks[i]->NotifyErrorAndShutdown(aErrorCode);
+  }
+
+  return NS_OK;
+}
+
+bool
+Geolocation::IsAlreadyCleared(nsGeolocationRequest* aRequest)
+{
+  for (uint32_t i = 0, length = mClearedWatchIDs.Length(); i < length; ++i) {
+    if (mClearedWatchIDs[i] == aRequest->WatchId()) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+bool
+Geolocation::ClearPendingRequest(nsGeolocationRequest* aRequest)
+{
+  if (aRequest->IsWatch() && this->IsAlreadyCleared(aRequest)) {
+    this->NotifyAllowedRequest(aRequest);
+    this->ClearWatch(aRequest->WatchId());
+    return true;
+  }
+
+  return false;
+}
+
+void
+Geolocation::GetCurrentPosition(PositionCallback& aCallback,
+                                PositionErrorCallback* aErrorCallback,
+                                const PositionOptions& aOptions,
+                                ErrorResult& aRv)
+{
+  nsresult rv = GetCurrentPosition(GeoPositionCallback(&aCallback),
+                                   GeoPositionErrorCallback(aErrorCallback),
+                                   Move(CreatePositionOptionsCopy(aOptions)));
+
+  if (NS_FAILED(rv)) {
+    aRv.Throw(rv);
+  }
+
+  return;
+}
+
+NS_IMETHODIMP
+Geolocation::GetCurrentPosition(nsIDOMGeoPositionCallback* aCallback,
+                                nsIDOMGeoPositionErrorCallback* aErrorCallback,
+                                UniquePtr<PositionOptions>&& aOptions)
+{
+  NS_ENSURE_ARG_POINTER(aCallback);
+
+  return GetCurrentPosition(GeoPositionCallback(aCallback),
+                            GeoPositionErrorCallback(aErrorCallback),
+                            Move(aOptions));
+}
+
+nsresult
+Geolocation::GetCurrentPosition(GeoPositionCallback callback,
+                                GeoPositionErrorCallback errorCallback,
+                                UniquePtr<PositionOptions>&& options)
+{
+  if (mPendingCallbacks.Length() > MAX_GEO_REQUESTS_PER_WINDOW) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  // After this we hand over ownership of options to our nsGeolocationRequest.
+
+  // Count the number of requests per protocol/scheme.
+  Telemetry::Accumulate(Telemetry::GEOLOCATION_GETCURRENTPOSITION_SECURE_ORIGIN,
+                        static_cast<uint8_t>(mProtocolType));
+
+  RefPtr<nsGeolocationRequest> request =
+    new nsGeolocationRequest(this, Move(callback), Move(errorCallback),
+                             Move(options), static_cast<uint8_t>(mProtocolType),
+                             false);
+
+  if (!sGeoEnabled) {
+    nsCOMPtr<nsIRunnable> ev = new RequestAllowEvent(false, request);
+    NS_DispatchToMainThread(ev);
+    return NS_OK;
+  }
+
+  if (!mOwner && !nsContentUtils::LegacyIsCallerChromeOrNativeCode()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (mOwner) {
+    if (!RegisterRequestWithPrompt(request)) {
+      return NS_ERROR_NOT_AVAILABLE;
+    }
+
+    return NS_OK;
+  }
+
+  if (!nsContentUtils::LegacyIsCallerChromeOrNativeCode()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCOMPtr<nsIRunnable> ev = new RequestAllowEvent(true, request);
+  NS_DispatchToMainThread(ev);
+
+  return NS_OK;
+}
+
+int32_t
+Geolocation::WatchPosition(PositionCallback& aCallback,
+                           PositionErrorCallback* aErrorCallback,
+                           const PositionOptions& aOptions,
+                           ErrorResult& aRv)
+{
+  int32_t ret = 0;
+  nsresult rv = WatchPosition(GeoPositionCallback(&aCallback),
+                              GeoPositionErrorCallback(aErrorCallback),
+                              Move(CreatePositionOptionsCopy(aOptions)), &ret);
+
+  if (NS_FAILED(rv)) {
+    aRv.Throw(rv);
+  }
+
+  return ret;
+}
+
+NS_IMETHODIMP
+Geolocation::WatchPosition(nsIDOMGeoPositionCallback *aCallback,
+                           nsIDOMGeoPositionErrorCallback *aErrorCallback,
+                           UniquePtr<PositionOptions>&& aOptions,
+                           int32_t* aRv)
+{
+  NS_ENSURE_ARG_POINTER(aCallback);
+
+  return WatchPosition(GeoPositionCallback(aCallback),
+                       GeoPositionErrorCallback(aErrorCallback),
+                       Move(aOptions), aRv);
+}
+
+nsresult
+Geolocation::WatchPosition(GeoPositionCallback aCallback,
+                           GeoPositionErrorCallback aErrorCallback,
+                           UniquePtr<PositionOptions>&& aOptions,
+                           int32_t* aRv)
+{
+  if (mWatchingCallbacks.Length() > MAX_GEO_REQUESTS_PER_WINDOW) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  // Count the number of requests per protocol/scheme.
+  Telemetry::Accumulate(Telemetry::GEOLOCATION_WATCHPOSITION_SECURE_ORIGIN,
+                        static_cast<uint8_t>(mProtocolType));
+
+  // The watch ID:
+  *aRv = mLastWatchId++;
+
+  RefPtr<nsGeolocationRequest> request =
+    new nsGeolocationRequest(this, Move(aCallback), Move(aErrorCallback),
+                             Move(aOptions),
+                             static_cast<uint8_t>(mProtocolType), true, *aRv);
+
+  if (!sGeoEnabled) {
+    nsCOMPtr<nsIRunnable> ev = new RequestAllowEvent(false, request);
+    NS_DispatchToMainThread(ev);
+    return NS_OK;
+  }
+
+  if (!mOwner && !nsContentUtils::LegacyIsCallerChromeOrNativeCode()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (mOwner) {
+    if (!RegisterRequestWithPrompt(request))
+      return NS_ERROR_NOT_AVAILABLE;
+
+    return NS_OK;
+  }
+
+  if (!nsContentUtils::LegacyIsCallerChromeOrNativeCode()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  request->Allow(JS::UndefinedHandleValue);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Geolocation::ClearWatch(int32_t aWatchId)
+{
+  if (aWatchId < 0) {
+    return NS_OK;
+  }
+
+  if (!mClearedWatchIDs.Contains(aWatchId)) {
+    mClearedWatchIDs.AppendElement(aWatchId);
+  }
+
+  for (uint32_t i = 0, length = mWatchingCallbacks.Length(); i < length; ++i) {
+    if (mWatchingCallbacks[i]->WatchId() == aWatchId) {
+      mWatchingCallbacks[i]->Shutdown();
+      RemoveRequest(mWatchingCallbacks[i]);
+      mClearedWatchIDs.RemoveElement(aWatchId);
+      break;
+    }
+  }
+
+  // make sure we also search through the pending requests lists for
+  // watches to clear...
+  for (uint32_t i = 0, length = mPendingRequests.Length(); i < length; ++i) {
+    if (mPendingRequests[i]->IsWatch() &&
+        (mPendingRequests[i]->WatchId() == aWatchId)) {
+      mPendingRequests[i]->Shutdown();
+      mPendingRequests.RemoveElementAt(i);
+      break;
+    }
+  }
+
+  return NS_OK;
+}
+
+bool
+Geolocation::WindowOwnerStillExists()
+{
+  // an owner was never set when Geolocation
+  // was created, which means that this object
+  // is being used without a window.
+  if (mOwner == nullptr) {
+    return true;
+  }
+
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryReferent(mOwner);
+
+  if (window) {
+    nsPIDOMWindowOuter* outer = window->GetOuterWindow();
+    if (!outer || outer->GetCurrentInnerWindow() != window ||
+        outer->Closed()) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+void
+Geolocation::NotifyAllowedRequest(nsGeolocationRequest* aRequest)
+{
+  if (aRequest->IsWatch()) {
+    mWatchingCallbacks.AppendElement(aRequest);
+  } else {
+    mPendingCallbacks.AppendElement(aRequest);
+  }
+}
+
+bool
+Geolocation::RegisterRequestWithPrompt(nsGeolocationRequest* request)
+{
+  if (Preferences::GetBool("geo.prompt.testing", false)) {
+    bool allow = Preferences::GetBool("geo.prompt.testing.allow", false);
+    nsCOMPtr<nsIRunnable> ev = new RequestAllowEvent(allow, request);
+    NS_DispatchToMainThread(ev);
+    return true;
+  }
+
+  nsCOMPtr<nsIRunnable> ev  = new RequestPromptEvent(request, mOwner);
+  NS_DispatchToMainThread(ev);
+  return true;
+}
+
+JSObject*
+Geolocation::WrapObject(JSContext *aCtx, JS::Handle<JSObject*> aGivenProto)
+{
+  return GeolocationBinding::Wrap(aCtx, this, aGivenProto);
+}