Move extensions::admin_policy code to extensions/browser.

Also temporarily permit inclusion of
grit/generated_resources.h from within extensions/browser.
(Longer-term, we'll want to move resources needed by
extensions/ into their own file.)

BUG=313284

Review URL: https://codereview.chromium.org/64643003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233847 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233847
Revert r227195 - aura: Set max pending frames to the default instead of 1 with ubercomp.

max_frames_pending>1 isn't properly throttled by the browser. Also, it shouldn't be necessary with SwapCompositorFrame.

BUG=316377

Review URL: https://codereview.chromium.org/64643005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233848 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233848