Cleanup how we handle the fake clock.

BUG=

Review URL: https://codereview.chromium.org/25124002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227712 0039d316-1c4b-4281-b951-d872f2087c98
Remove whitelisting of the Files app from dispatcher.cc for the experimental webview.

This patch removed the whitelisting, since it is not necessary anymore since M-31.

BUG=297936
TEST=browser_tests

Review URL: https://codereview.chromium.org/26440003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227713 0039d316-1c4b-4281-b951-d872f2087c98
Explicitly disabling viewport when running layout tests

Unless a layout test explicitly turns on the viewportEnabled
setting, it should be off. This is specifically needed for 
https://codereview.chromium.org/23819019/ as it removed 
fixed layout mode as a cleanup, which implicitly turned on 
viewportEnabled on Android layout tests.

BUG=

Review URL: https://codereview.chromium.org/26551003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227714 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 227714
Blink roll 159088:159187

http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog_blink.html?url=/trunk&range=159089:159187&mode=html
TBR=
BUG=

Review URL: https://codereview.chromium.org/26643003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227715 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 227715