Pepper: Limit FileIO Writes to 32MB, as for Reads.

This prevents out of memory crashes when the plugin passes
a very large buffer.

BUG=327876

Review URL: https://codereview.chromium.org/100483007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240469 0039d316-1c4b-4281-b951-d872f2087c98
Make WebRTC browser tests fail cleaner when the host fails to provide a camera.

BUG=327673
NOTRY=True

Review URL: https://codereview.chromium.org/114063003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240470 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240470
Add variation IDs for the iOS NTP experiment.

BUG=316910
TEST=None

Review URL: https://codereview.chromium.org/114133003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240471 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240471
chromeos: Only send power state after powerd is up.

Make PowerManagerClient wait for the
org.chromium.PowerManager D-Bus name to be owned by powerd
before making method calls to it. Previously, the class
would also make method calls when it saw the name get
released. Depending on how quickly powerd restarted, those
calls may or may not have succeeded.

BUG=320340

Review URL: https://codereview.chromium.org/114173003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240472 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240472