Add Sync Sample Box parsing to detect when all samples are considered random access points.

BUG=b/12218009
TEST=TrackRunIteratorTest. MissingStssMakesAllSamplesKeyframes

Review URL: https://codereview.chromium.org/134873002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244379 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 244379
[Android] Provide touch and gesture system timestamps for LatencyInfo

Provide touch and gesture events with the appropriate
INPUT_EVENT_LATENCY_ORIGINAL_COMPONENT LatencyInfo timestamp.  This timestamp
is that generated by the kernel, and is useful for tracking end-to-end
event latency.

BUG=333370

Review URL: https://codereview.chromium.org/134683003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244380 0039d316-1c4b-4281-b951-d872f2087c98
Support GU retry command in sync engine. The command specifies a delay after which syncer should issue a GU to pick up updates missed by last GU.

BUG=

Review URL: https://codereview.chromium.org/124083002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244381 0039d316-1c4b-4281-b951-d872f2087c98
Remove throughput_tests

These have been replaced by Telemetry tests and are not being run anywhere.

BUG=332167, 333357

Review URL: https://codereview.chromium.org/124393006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244382 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 244382