Add m-esr52 at 52.6.0

13 files changed, 527 insertions, 0 deletions

diff --git a/media/libyuv/tools/valgrind-libyuv/libyuv_tests.bat b/media/libyuv/tools/valgrind-libyuv/libyuv_tests.bat
new file mode 100644
index 000000000..e37f09eb2
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/libyuv_tests.bat
@@ -0,0 +1,79 @@
+@echo off

+:: Copyright (c) 2012 The LibYuv Project Authors. All rights reserved.

+::

+:: Use of this source code is governed by a BSD-style license

+:: that can be found in the LICENSE file in the root of the source

+:: tree. An additional intellectual property rights grant can be found

+:: in the file PATENTS.  All contributing project authors may

+:: be found in the AUTHORS file in the root of the source tree.

+

+:: This script is a copy of chrome_tests.bat with the following changes:

+:: - Invokes libyuv_tests.py instead of chrome_tests.py

+:: - Chromium's Valgrind scripts directory is added to the PYTHONPATH to make

+::   it possible to execute the Python scripts properly.

+

+:: TODO(timurrrr): batch files 'export' all the variables to the parent shell

+set THISDIR=%~dp0

+set TOOL_NAME="unknown"

+

+:: Get the tool name and put it into TOOL_NAME {{{1

+:: NB: SHIFT command doesn't modify %*

+:PARSE_ARGS_LOOP

+  if %1 == () GOTO:TOOLNAME_NOT_FOUND

+  if %1 == --tool GOTO:TOOLNAME_FOUND

+  SHIFT

+  goto :PARSE_ARGS_LOOP

+

+:TOOLNAME_NOT_FOUND

+echo "Please specify a tool (tsan or drmemory) by using --tool flag"

+exit /B 1

+

+:TOOLNAME_FOUND

+SHIFT

+set TOOL_NAME=%1

+:: }}}

+if "%TOOL_NAME%" == "drmemory"          GOTO :SETUP_DRMEMORY

+if "%TOOL_NAME%" == "drmemory_light"    GOTO :SETUP_DRMEMORY

+if "%TOOL_NAME%" == "drmemory_full"     GOTO :SETUP_DRMEMORY

+if "%TOOL_NAME%" == "drmemory_pattern"  GOTO :SETUP_DRMEMORY

+if "%TOOL_NAME%" == "tsan"     GOTO :SETUP_TSAN

+echo "Unknown tool: `%TOOL_NAME%`! Only tsan and drmemory are supported."

+exit /B 1

+

+:SETUP_DRMEMORY

+if NOT "%DRMEMORY_COMMAND%"=="" GOTO :RUN_TESTS

+:: Set up DRMEMORY_COMMAND to invoke Dr. Memory {{{1

+set DRMEMORY_PATH=%THISDIR%..\..\third_party\drmemory

+set DRMEMORY_SFX=%DRMEMORY_PATH%\drmemory-windows-sfx.exe

+if EXIST %DRMEMORY_SFX% GOTO DRMEMORY_BINARY_OK

+echo "Can't find Dr. Memory executables."

+echo "See http://www.chromium.org/developers/how-tos/using-valgrind/dr-memory"

+echo "for the instructions on how to get them."

+exit /B 1

+

+:DRMEMORY_BINARY_OK

+%DRMEMORY_SFX% -o%DRMEMORY_PATH%\unpacked -y

+set DRMEMORY_COMMAND=%DRMEMORY_PATH%\unpacked\bin\drmemory.exe

+:: }}}

+goto :RUN_TESTS

+

+:SETUP_TSAN

+:: Set up PIN_COMMAND to invoke TSan {{{1

+set TSAN_PATH=%THISDIR%..\..\third_party\tsan

+set TSAN_SFX=%TSAN_PATH%\tsan-x86-windows-sfx.exe

+if EXIST %TSAN_SFX% GOTO TSAN_BINARY_OK

+echo "Can't find ThreadSanitizer executables."

+echo "See http://www.chromium.org/developers/how-tos/using-valgrind/threadsanitizer/threadsanitizer-on-windows"

+echo "for the instructions on how to get them."

+exit /B 1

+

+:TSAN_BINARY_OK

+%TSAN_SFX% -o%TSAN_PATH%\unpacked -y

+set PIN_COMMAND=%TSAN_PATH%\unpacked\tsan-x86-windows\tsan.bat

+:: }}}

+goto :RUN_TESTS

+

+:RUN_TESTS

+set PYTHONPATH=%THISDIR%..\python\google;%THISDIR%..\valgrind

+set RUNNING_ON_VALGRIND=yes

+python %THISDIR%libyuv_tests.py %*

diff --git a/media/libyuv/tools/valgrind-libyuv/libyuv_tests.py b/media/libyuv/tools/valgrind-libyuv/libyuv_tests.py
new file mode 100755
index 000000000..bd27cd5ca
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/libyuv_tests.py
@@ -0,0 +1,138 @@
+#!/usr/bin/env python
+# Copyright (c) 2012 The LibYuv Project Authors. All rights reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS.  All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+"""Runs various libyuv tests through valgrind_test.py.
+
+This script inherits the chrome_tests.py in Chrome, but allows running any test
+instead of only the hard-coded ones. It uses the -t cmdline flag to do this, and
+only supports specifying a single test for each run.
+
+Suppression files:
+The Chrome valgrind directory we use as a DEPS dependency contains the following
+suppression files:
+  valgrind/memcheck/suppressions.txt
+  valgrind/memcheck/suppressions_mac.txt
+  valgrind/tsan/suppressions.txt
+  valgrind/tsan/suppressions_mac.txt
+  valgrind/tsan/suppressions_win32.txt
+Since they're referenced from the chrome_tests.py script, we have similar files
+below the directory of this script. When executing, this script will setup both
+Chrome's suppression files and our own, so we can easily maintain libyuv
+specific suppressions in our own files.
+"""
+
+import logging
+import optparse
+import os
+import sys
+
+import logging_utils
+import path_utils
+
+import chrome_tests
+
+
+class LibyuvTest(chrome_tests.ChromeTests):
+  """Class that handles setup of suppressions for libyuv.
+
+  Everything else is inherited from chrome_tests.ChromeTests.
+  """
+
+  def _DefaultCommand(self, tool, exe=None, valgrind_test_args=None):
+    """Override command-building method so we can add more suppressions."""
+    cmd = chrome_tests.ChromeTests._DefaultCommand(self, tool, exe,
+                                                   valgrind_test_args)
+    # When ChromeTests._DefaultCommand has executed, it has setup suppression
+    # files based on what's found in the memcheck/ or tsan/ subdirectories of
+    # this script's location. If Mac or Windows is executing, additional
+    # platform specific files have also been added.
+    # Since only the ones located below this directory is added, we must also
+    # add the ones maintained by Chrome, located in ../valgrind.
+
+    # The idea is to look for --suppression arguments in the cmd list and add a
+    # modified copy of each suppression file, for the corresponding file in
+    # ../valgrind. If we would simply replace 'valgrind-libyuv' with 'valgrind'
+    # we may produce invalid paths if other parts of the path contain that
+    # string. That's why the code below only replaces the end of the path.
+    script_dir = path_utils.ScriptDir()
+    old_base, _ = os.path.split(script_dir)
+    new_dir = os.path.join(old_base, 'valgrind')
+    add_suppressions = []
+    for token in cmd:
+      if '--suppressions' in token:
+        add_suppressions.append(token.replace(script_dir, new_dir))
+    return add_suppressions + cmd
+
+
+def main(_):
+  parser = optparse.OptionParser('usage: %prog -b <dir> -t <test> <test args>')
+  parser.disable_interspersed_args()
+  parser.add_option('-b', '--build-dir',
+                    help=('Location of the compiler output. Can only be used '
+                          'when the test argument does not contain this path.'))
+  parser.add_option("--target", help="Debug or Release")
+  parser.add_option('-t', '--test', help='Test to run.')
+  parser.add_option('', '--baseline', action='store_true', default=False,
+                    help='Generate baseline data instead of validating')
+  parser.add_option('', '--gtest_filter',
+                    help='Additional arguments to --gtest_filter')
+  parser.add_option('', '--gtest_repeat',
+                    help='Argument for --gtest_repeat')
+  parser.add_option("--gtest_shuffle", action="store_true", default=False,
+                    help="Randomize tests' orders on every iteration.")
+  parser.add_option("--gtest_break_on_failure", action="store_true",
+                    default=False,
+                    help="Drop in to debugger on assertion failure. Also "
+                         "useful for forcing tests to exit with a stack dump "
+                         "on the first assertion failure when running with "
+                         "--gtest_repeat=-1")
+  parser.add_option('-v', '--verbose', action='store_true', default=False,
+                    help='Verbose output - enable debug log messages')
+  parser.add_option('', '--tool', dest='valgrind_tool', default='memcheck',
+                    help='Specify a valgrind tool to run the tests under')
+  parser.add_option('', '--tool_flags', dest='valgrind_tool_flags', default='',
+                    help='Specify custom flags for the selected valgrind tool')
+  parser.add_option('', '--keep_logs', action='store_true', default=False,
+                    help=('Store memory tool logs in the <tool>.logs directory '
+                          'instead of /tmp.\nThis can be useful for tool '
+                          'developers/maintainers.\nPlease note that the <tool>'
+                          '.logs directory will be clobbered on tool startup.'))
+  parser.add_option("--test-launcher-bot-mode", action="store_true",
+                    help="run the tests with --test-launcher-bot-mode")
+  parser.add_option("--test-launcher-total-shards", type=int,
+                    help="run the tests with --test-launcher-total-shards")
+  parser.add_option("--test-launcher-shard-index", type=int,
+                    help="run the tests with --test-launcher-shard-index")
+  options, args = parser.parse_args()
+
+  if options.verbose:
+    logging_utils.config_root(logging.DEBUG)
+  else:
+    logging_utils.config_root()
+
+  if not options.test:
+    parser.error('--test not specified')
+
+  # Support build dir both with and without the target.
+  if (options.target and options.build_dir and
+      not options.build_dir.endswith(options.target)):
+    options.build_dir = os.path.join(options.build_dir, options.target)
+
+  # If --build_dir is provided, prepend it to the test executable if needed.
+  test_executable = options.test
+  if options.build_dir and not test_executable.startswith(options.build_dir):
+    test_executable = os.path.join(options.build_dir, test_executable)
+  args = [test_executable] + args
+
+  test = LibyuvTest(options, args, 'cmdline')
+  return test.Run()
+
+if __name__ == '__main__':
+  return_code = main(sys.argv)
+  sys.exit(return_code)
diff --git a/media/libyuv/tools/valgrind-libyuv/libyuv_tests.sh b/media/libyuv/tools/valgrind-libyuv/libyuv_tests.sh
new file mode 100755
index 000000000..4fee7daed
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/libyuv_tests.sh
@@ -0,0 +1,138 @@
+#!/bin/bash
+# Copyright (c) 2012 The LibYuv Project Authors. All rights reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS.  All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+# Set up some paths and re-direct the arguments to libyuv_tests.py
+
+# This script is a copy of the chrome_tests.sh wrapper script with the following
+# changes:
+# - The locate_valgrind.sh of Chromium's Valgrind scripts dir is used to locate
+#   the Valgrind framework install.
+# - libyuv_tests.py is invoked instead of chrome_tests.py.
+# - Chromium's Valgrind scripts directory is added to the PYTHONPATH to make it
+#   possible to execute the Python scripts properly.
+
+export THISDIR=`dirname $0`
+ARGV_COPY="$@"
+
+# We need to set CHROME_VALGRIND iff using Memcheck or TSan-Valgrind:
+#   tools/valgrind-libyuv/libyuv_tests.sh --tool memcheck
+# or
+#   tools/valgrind-libyuv/libyuv_tests.sh --tool=memcheck
+# (same for "--tool=tsan")
+tool="memcheck"  # Default to memcheck.
+while (( "$#" ))
+do
+  if [[ "$1" == "--tool" ]]
+  then
+    tool="$2"
+    shift
+  elif [[ "$1" =~ --tool=(.*) ]]
+  then
+    tool="${BASH_REMATCH[1]}"
+  fi
+  shift
+done
+
+NEEDS_VALGRIND=0
+NEEDS_DRMEMORY=0
+
+case "$tool" in
+  "memcheck")
+    NEEDS_VALGRIND=1
+    ;;
+  "tsan" | "tsan_rv")
+    if [ "`uname -s`" == CYGWIN* ]
+    then
+      NEEDS_PIN=1
+    else
+      NEEDS_VALGRIND=1
+    fi
+    ;;
+  "drmemory" | "drmemory_light" | "drmemory_full" | "drmemory_pattern")
+    NEEDS_DRMEMORY=1
+    ;;
+esac
+
+# For Libyuv, we'll use the locate_valgrind.sh script in Chromium's Valgrind
+# scripts dir to locate the Valgrind framework install
+CHROME_VALGRIND_SCRIPTS=$THISDIR/../valgrind
+
+if [ "$NEEDS_VALGRIND" == "1" ]
+then
+  CHROME_VALGRIND=`sh $CHROME_VALGRIND_SCRIPTS/locate_valgrind.sh`
+  if [ "$CHROME_VALGRIND" = "" ]
+  then
+    # locate_valgrind.sh failed
+    exit 1
+  fi
+  echo "Using valgrind binaries from ${CHROME_VALGRIND}"
+
+  PATH="${CHROME_VALGRIND}/bin:$PATH"
+  # We need to set these variables to override default lib paths hard-coded into
+  # Valgrind binary.
+  export VALGRIND_LIB="$CHROME_VALGRIND/lib/valgrind"
+  export VALGRIND_LIB_INNER="$CHROME_VALGRIND/lib/valgrind"
+
+  # Clean up some /tmp directories that might be stale due to interrupted
+  # chrome_tests.py execution.
+  # FYI:
+  #   -mtime +1  <- only print files modified more than 24h ago,
+  #   -print0/-0 are needed to handle possible newlines in the filenames.
+  echo "Cleanup /tmp from Valgrind stuff"
+  find /tmp -maxdepth 1 \(\
+        -name "vgdb-pipe-*" -or -name "vg_logs_*" -or -name "valgrind.*" \
+      \) -mtime +1 -print0 | xargs -0 rm -rf
+fi
+
+if [ "$NEEDS_DRMEMORY" == "1" ]
+then
+  if [ -z "$DRMEMORY_COMMAND" ]
+  then
+    DRMEMORY_PATH="$THISDIR/../../third_party/drmemory"
+    DRMEMORY_SFX="$DRMEMORY_PATH/drmemory-windows-sfx.exe"
+    if [ ! -f "$DRMEMORY_SFX" ]
+    then
+      echo "Can't find Dr. Memory executables."
+      echo "See http://www.chromium.org/developers/how-tos/using-valgrind/dr-memory"
+      echo "for the instructions on how to get them."
+      exit 1
+    fi
+
+    chmod +x "$DRMEMORY_SFX"  # Cygwin won't run it without +x.
+    "$DRMEMORY_SFX" -o"$DRMEMORY_PATH/unpacked" -y
+    export DRMEMORY_COMMAND="$DRMEMORY_PATH/unpacked/bin/drmemory.exe"
+  fi
+fi
+
+if [ "$NEEDS_PIN" == "1" ]
+then
+  if [ -z "$PIN_COMMAND" ]
+  then
+    # Set up PIN_COMMAND to invoke TSan.
+    TSAN_PATH="$THISDIR/../../third_party/tsan"
+    TSAN_SFX="$TSAN_PATH/tsan-x86-windows-sfx.exe"
+    echo "$TSAN_SFX"
+    if [ ! -f $TSAN_SFX ]
+    then
+      echo "Can't find ThreadSanitizer executables."
+      echo "See http://www.chromium.org/developers/how-tos/using-valgrind/threadsanitizer/threadsanitizer-on-windows"
+      echo "for the instructions on how to get them."
+      exit 1
+    fi
+
+    chmod +x "$TSAN_SFX"  # Cygwin won't run it without +x.
+    "$TSAN_SFX" -o"$TSAN_PATH"/unpacked -y
+    export PIN_COMMAND="$TSAN_PATH/unpacked/tsan-x86-windows/tsan.bat"
+  fi
+fi
+
+# Add Chrome's Valgrind scripts dir to the PYTHON_PATH since it contains
+# the scripts that are needed for this script to run
+PYTHONPATH=$THISDIR/../python/google:$CHROME_VALGRIND_SCRIPTS python \
+           "$THISDIR/libyuv_tests.py" $ARGV_COPY
diff --git a/media/libyuv/tools/valgrind-libyuv/memcheck/OWNERS b/media/libyuv/tools/valgrind-libyuv/memcheck/OWNERS
new file mode 100644
index 000000000..72e8ffc0d
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/memcheck/OWNERS
@@ -0,0 +1 @@
+*
diff --git a/media/libyuv/tools/valgrind-libyuv/memcheck/PRESUBMIT.py b/media/libyuv/tools/valgrind-libyuv/memcheck/PRESUBMIT.py
new file mode 100644
index 000000000..46ff4cfcf
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/memcheck/PRESUBMIT.py
@@ -0,0 +1,99 @@
+#!/usr/bin/env python
+# Copyright (c) 2012 The LibYuv Project Authors. All rights reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS.  All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+"""
+Copied from Chrome's src/tools/valgrind/memcheck/PRESUBMIT.py
+
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
+for more details on the presubmit API built into gcl.
+"""
+
+import os
+import re
+import sys
+
+def CheckChange(input_api, output_api):
+  """Checks the memcheck suppressions files for bad data."""
+
+  # Add the path to the Chrome valgrind dir to the import path:
+  tools_vg_path = os.path.join(input_api.PresubmitLocalPath(), '..', '..',
+                               'valgrind')
+  sys.path.append(tools_vg_path)
+  import suppressions
+
+  sup_regex = re.compile('suppressions.*\.txt$')
+  suppressions = {}
+  errors = []
+  check_for_memcheck = False
+  # skip_next_line has 3 possible values:
+  # - False: don't skip the next line.
+  # - 'skip_suppression_name': the next line is a suppression name, skip.
+  # - 'skip_param': the next line is a system call parameter error, skip.
+  skip_next_line = False
+  for f in filter(lambda x: sup_regex.search(x.LocalPath()),
+                  input_api.AffectedFiles()):
+    for line, line_num in zip(f.NewContents(),
+                              xrange(1, len(f.NewContents()) + 1)):
+      line = line.lstrip()
+      if line.startswith('#') or not line:
+        continue
+
+      if skip_next_line:
+        if skip_next_line == 'skip_suppression_name':
+          if 'insert_a_suppression_name_here' in line:
+            errors.append('"insert_a_suppression_name_here" is not a valid '
+                          'suppression name')
+          if suppressions.has_key(line):
+            if f.LocalPath() == suppressions[line][1]:
+              errors.append('suppression with name "%s" at %s line %s '
+                            'has already been defined at line %s' %
+                            (line, f.LocalPath(), line_num,
+                             suppressions[line][1]))
+            else:
+              errors.append('suppression with name "%s" at %s line %s '
+                            'has already been defined at %s line %s' %
+                            (line, f.LocalPath(), line_num,
+                             suppressions[line][0], suppressions[line][1]))
+          else:
+            suppressions[line] = (f, line_num)
+            check_for_memcheck = True;
+        skip_next_line = False
+        continue
+      if check_for_memcheck:
+        if not line.startswith('Memcheck:'):
+          errors.append('"%s" should be "Memcheck:..." in %s line %s' %
+                        (line, f.LocalPath(), line_num))
+        check_for_memcheck = False;
+      if line == '{':
+        skip_next_line = 'skip_suppression_name'
+        continue
+      if line == "Memcheck:Param":
+        skip_next_line = 'skip_param'
+        continue
+
+      if (line.startswith('fun:') or line.startswith('obj:') or
+          line.startswith('Memcheck:') or line == '}' or
+          line == '...'):
+        continue
+      errors.append('"%s" is probably wrong: %s line %s' % (line, f.LocalPath(),
+                                                            line_num))
+  if errors:
+    return [output_api.PresubmitError('\n'.join(errors))]
+  return []
+
+def CheckChangeOnUpload(input_api, output_api):
+  return CheckChange(input_api, output_api)
+
+def CheckChangeOnCommit(input_api, output_api):
+  return CheckChange(input_api, output_api)
+
+def GetPreferredTrySlaves():
+  # We don't have any memcheck slaves yet, so there's no use for this method.
+  # When we have, the slave name(s) should be put into this list.
+  return []
diff --git a/media/libyuv/tools/valgrind-libyuv/memcheck/suppressions.txt b/media/libyuv/tools/valgrind-libyuv/memcheck/suppressions.txt
new file mode 100644
index 000000000..3ad0c8ccc
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/memcheck/suppressions.txt
@@ -0,0 +1,5 @@
+# This file is used in addition to the one already maintained in Chrome.
+# It acts as a place holder for future additions for this project.
+# It must exist for the Python wrapper script to work properly.
+
+
diff --git a/media/libyuv/tools/valgrind-libyuv/memcheck/suppressions_mac.txt b/media/libyuv/tools/valgrind-libyuv/memcheck/suppressions_mac.txt
new file mode 100644
index 000000000..3ad0c8ccc
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/memcheck/suppressions_mac.txt
@@ -0,0 +1,5 @@
+# This file is used in addition to the one already maintained in Chrome.
+# It acts as a place holder for future additions for this project.
+# It must exist for the Python wrapper script to work properly.
+
+
diff --git a/media/libyuv/tools/valgrind-libyuv/memcheck/suppressions_win32.txt b/media/libyuv/tools/valgrind-libyuv/memcheck/suppressions_win32.txt
new file mode 100644
index 000000000..3ad0c8ccc
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/memcheck/suppressions_win32.txt
@@ -0,0 +1,5 @@
+# This file is used in addition to the one already maintained in Chrome.
+# It acts as a place holder for future additions for this project.
+# It must exist for the Python wrapper script to work properly.
+
+
diff --git a/media/libyuv/tools/valgrind-libyuv/tsan/OWNERS b/media/libyuv/tools/valgrind-libyuv/tsan/OWNERS
new file mode 100644
index 000000000..72e8ffc0d
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/tsan/OWNERS
@@ -0,0 +1 @@
+*
diff --git a/media/libyuv/tools/valgrind-libyuv/tsan/PRESUBMIT.py b/media/libyuv/tools/valgrind-libyuv/tsan/PRESUBMIT.py
new file mode 100644
index 000000000..d25b6ebce
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/tsan/PRESUBMIT.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+# Copyright (c) 2012 The LibYuv Project Authors. All rights reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS.  All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+import os
+import re
+import sys
+
+"""
+Copied from Chrome's src/tools/valgrind/tsan/PRESUBMIT.py
+
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
+for more details on the presubmit API built into gcl.
+"""
+
+def CheckChange(input_api, output_api):
+  """Checks the TSan suppressions files for bad suppressions."""
+
+  # Add the path to the Chrome valgrind dir to the import path:
+  tools_vg_path = os.path.join(input_api.PresubmitLocalPath(), '..', '..',
+                               'valgrind')
+  sys.path.append(tools_vg_path)
+  import suppressions
+
+  return suppressions.PresubmitCheck(input_api, output_api)
+
+def CheckChangeOnUpload(input_api, output_api):
+  return CheckChange(input_api, output_api)
+
+def CheckChangeOnCommit(input_api, output_api):
+  return CheckChange(input_api, output_api)
+
+def GetPreferredTrySlaves():
+  # We don't have any tsan slaves yet, so there's no use for this method.
+  # When we have, the slave name(s) should be put into this list.
+  return []
diff --git a/media/libyuv/tools/valgrind-libyuv/tsan/suppressions.txt b/media/libyuv/tools/valgrind-libyuv/tsan/suppressions.txt
new file mode 100644
index 000000000..3ad0c8ccc
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/tsan/suppressions.txt
@@ -0,0 +1,5 @@
+# This file is used in addition to the one already maintained in Chrome.
+# It acts as a place holder for future additions for this project.
+# It must exist for the Python wrapper script to work properly.
+
+
diff --git a/media/libyuv/tools/valgrind-libyuv/tsan/suppressions_mac.txt b/media/libyuv/tools/valgrind-libyuv/tsan/suppressions_mac.txt
new file mode 100644
index 000000000..3ad0c8ccc
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/tsan/suppressions_mac.txt
@@ -0,0 +1,5 @@
+# This file is used in addition to the one already maintained in Chrome.
+# It acts as a place holder for future additions for this project.
+# It must exist for the Python wrapper script to work properly.
+
+
diff --git a/media/libyuv/tools/valgrind-libyuv/tsan/suppressions_win32.txt b/media/libyuv/tools/valgrind-libyuv/tsan/suppressions_win32.txt
new file mode 100644
index 000000000..3ad0c8ccc
--- /dev/null
+++ b/media/libyuv/tools/valgrind-libyuv/tsan/suppressions_win32.txt
@@ -0,0 +1,5 @@
+# This file is used in addition to the one already maintained in Chrome.
+# It acts as a place holder for future additions for this project.
+# It must exist for the Python wrapper script to work properly.
+
+