Roll chromium_revision faace60759..b895cae903 (470521:470551)

Also, add third_party/gtest-parallel/gtest_parallel.py as a swarming
dependency.

Change log: faace60759..b895cae903
Full diff: faace60759..b895cae903

Changed dependencies:
* src/base: 3527b70975..1923248197
* src/ios: 1423885de8..7ae2aeeb51
* src/testing: 8a6aee5860..ac8e76c707
* src/third_party/gtest-parallel: c3e4b0a6d1..605f146238
* src/tools: 3847c42e2c..e7226f9d0d
* src/webrtc/examples/androidtests/third_party/gradle: fed75fbb7b..47ecd621bd
DEPS diff: faace60759..b895cae903/DEPS

No update to Clang.

TBR=
BUG=None

patch from issue 2869393002 at patchset 1 (http://crrev.com/2869393002#ps1)

Review-Url: https://codereview.webrtc.org/2871213002
Cr-Commit-Position: refs/heads/master@{#18087}

tools_webrtc/mb/mb.py

@@ -1090,6 +1090,7 @@ class MetaBuildWrapper(object):
       if not memcheck:
         extra_files += [
             '../../third_party/gtest-parallel/gtest-parallel',
+            '../../third_party/gtest-parallel/gtest_parallel.py',
             '../../tools_webrtc/gtest-parallel-wrapper.py',
         ]
         sep = '\\' if self.platform == 'win32' else '/'