New images for windows scrollbars that add transparency

This way you can see the find ticks.

BUG=333499
TEST=none
R=oshima@chromium.org
TBR=oshima@chromium.org

Review URL: https://codereview.chromium.org/135773006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247336 0039d316-1c4b-4281-b951-d872f2087c98
[Android] Re-enable content_browsertests on main waterfall.

There's enough infra capacity now.

BUG=
R=navabi@chromium.org, navabi@google.com

Review URL: https://codereview.chromium.org/132403005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247341 0039d316-1c4b-4281-b951-d872f2087c98
Revert change to window_impl default window styles to see if this fixes tests.

TBR=sky@chromium.org
BUG=

Review URL: https://codereview.chromium.org/139283009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247342 0039d316-1c4b-4281-b951-d872f2087c98
Fix serialization for chrome_settings_overrides manifest permission

The existing manifest permission ID includes a period character which
results in the persisted pref being created with a nested
dictionary. The pref loading code does not expect the nested dictionary
and fails to read the pref.

This change renames the ID to be based on the chrome_settings_overrides
key since the manifest permission as a whole is associated with this
top-level key.

BUG=338505
R=kalman@chromium.org

Review URL: https://codereview.chromium.org/136683008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247344 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247344