Roll chromium_revision e144d30..6fdb142 (318658:318841) + remove OVERRIDE macro

Clang version changed 223108:230914
Details: https://chromium.googlesource.com/chromium/src/+/e144d30..6fdb142/tools/clang/scripts/update.sh

Removes the OVERRIDE macro defined in:
* webrtc/base/common.h
* webrtc/typedefs.h

The majority of the source changes were done by running this in src/:
perl -0pi -e "s/virtual\s([^({;]*(\([^({;]*\)[^({;]*))(OVERRIDE|override)/\1override/sg" `find {talk,webrtc} -name "*.h"  -o -name "*.cc*" -o -name "*.mm*"`

which converted all:
virtual Foo() OVERRIDE
functions to:
Foo() override

Then I manually edited:
* talk/media/webrtc/fakewebrtccommon.h
* webrtc/test/fake_common.h

Remaining uses of OVERRIDE was fixed by search+replace.

Manual edits were done to fix virtual destructors that were
overriding inherited ones.

Finally a build error related to the pure virtual definitions of
Read, Write and Rewind in common_types.h required a bit of
refactoring in:
* webrtc/common_types.cc
* webrtc/common_types.h
* webrtc/system_wrappers/interface/file_wrapper.h
* webrtc/system_wrappers/source/file_impl.cc

This roll should make it possible for us to finally re-enable deadlock
detection for TSan on the buildbots.

BUG=4106
R=pbos@webrtc.org, tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/41069004

Cr-Commit-Position: refs/heads/master@{#8596}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8596 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_processing/noise_suppression_impl.h b/webrtc/modules/audio_processing/noise_suppression_impl.h
index 14abe66..33a0e06 100644
--- a/webrtc/modules/audio_processing/noise_suppression_impl.h
+++ b/webrtc/modules/audio_processing/noise_suppression_impl.h
@@ -30,22 +30,22 @@
   int ProcessCaptureAudio(AudioBuffer* audio);
 
   // NoiseSuppression implementation.
-  virtual bool is_enabled() const OVERRIDE;
-  virtual float speech_probability() const OVERRIDE;
+  bool is_enabled() const override;
+  float speech_probability() const override;
 
  private:
   // NoiseSuppression implementation.
-  virtual int Enable(bool enable) OVERRIDE;
-  virtual int set_level(Level level) OVERRIDE;
-  virtual Level level() const OVERRIDE;
+  int Enable(bool enable) override;
+  int set_level(Level level) override;
+  Level level() const override;
 
   // ProcessingComponent implementation.
-  virtual void* CreateHandle() const OVERRIDE;
-  virtual int InitializeHandle(void* handle) const OVERRIDE;
-  virtual int ConfigureHandle(void* handle) const OVERRIDE;
-  virtual void DestroyHandle(void* handle) const OVERRIDE;
-  virtual int num_handles_required() const OVERRIDE;
-  virtual int GetHandleError(void* handle) const OVERRIDE;
+  void* CreateHandle() const override;
+  int InitializeHandle(void* handle) const override;
+  int ConfigureHandle(void* handle) const override;
+  void DestroyHandle(void* handle) const override;
+  int num_handles_required() const override;
+  int GetHandleError(void* handle) const override;
 
   const AudioProcessing* apm_;
   CriticalSectionWrapper* crit_;