Add unit test for context_menu_content_type.cc

BUG=None
Test=Unit test only change.

Review URL: https://codereview.chromium.org/185003003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254374 0039d316-1c4b-4281-b951-d872f2087c98
Remove obsolete files and comment from skia/

BUG=
TEST=none

Review URL: https://codereview.chromium.org/182433002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254375 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254375