Stop generating webkit_resources.rc from webkit_resources.grd.

Fixes a TODO.

BUG=297672
TBR=avi

Review URL: https://codereview.chromium.org/115523007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243238 0039d316-1c4b-4281-b951-d872f2087c98
Renaming RMQStore to GCMStore and breaking out its interface

BUG=284553

Review URL: https://codereview.chromium.org/121743002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243239 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243239