GitLab

- Move linux web widgets painting code from webkit;
- Move dependent resources from webkit_resources into gfx_resources and
  follow the pattern in net package to add resource loading support to
  gfx package;
- Update ChromeOS theme engine to follow mocks in chromium-os:9256.

BUG=chromium-os:9256
TEST=Verify default web widgets has desired look on ChromeOS.

Review URL: http://codereview.chromium.org/6254004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71969 0039d316-1c4b-4281-b951-d872f2087c98