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/system_wrappers/source/clock.cc b/webrtc/system_wrappers/source/clock.cc
index 8e69652..a7f261a 100644
--- a/webrtc/system_wrappers/source/clock.cc
+++ b/webrtc/system_wrappers/source/clock.cc
@@ -36,19 +36,18 @@
 class RealTimeClock : public Clock {
   // Return a timestamp in milliseconds relative to some arbitrary source; the
   // source is fixed for this clock.
-  virtual int64_t TimeInMilliseconds() const OVERRIDE {
+  int64_t TimeInMilliseconds() const override {
     return TickTime::MillisecondTimestamp();
   }
 
   // Return a timestamp in microseconds relative to some arbitrary source; the
   // source is fixed for this clock.
-  virtual int64_t TimeInMicroseconds() const OVERRIDE {
+  int64_t TimeInMicroseconds() const override {
     return TickTime::MicrosecondTimestamp();
   }
 
   // Retrieve an NTP absolute timestamp in seconds and fractions of a second.
-  virtual void CurrentNtp(uint32_t& seconds,
-                          uint32_t& fractions) const OVERRIDE {
+  void CurrentNtp(uint32_t& seconds, uint32_t& fractions) const override {
     timeval tv = CurrentTimeVal();
     double microseconds_in_seconds;
     Adjust(tv, &seconds, &microseconds_in_seconds);
@@ -57,7 +56,7 @@
   }
 
   // Retrieve an NTP absolute timestamp in milliseconds.
-  virtual int64_t CurrentNtpInMilliseconds() const OVERRIDE {
+  int64_t CurrentNtpInMilliseconds() const override {
     timeval tv = CurrentTimeVal();
     uint32_t seconds;
     double microseconds_in_seconds;
@@ -103,7 +102,7 @@
     LARGE_INTEGER counter_ms;
   };
 
-  virtual timeval CurrentTimeVal() const OVERRIDE {
+  timeval CurrentTimeVal() const override {
     const uint64_t FILETIME_1970 = 0x019db1ded53e8000;
 
     FILETIME StartTime;
@@ -191,10 +190,10 @@
  public:
   UnixRealTimeClock() {}
 
-  virtual ~UnixRealTimeClock() {}
+  ~UnixRealTimeClock() override {}
 
  protected:
-  virtual timeval CurrentTimeVal() const OVERRIDE {
+  timeval CurrentTimeVal() const override {
     struct timeval tv;
     struct timezone tz;
     tz.tz_minuteswest = 0;