Moved some more dependencies of ExtensionService to extensions

This change also removed a few includes from extension_service.cc that
were not in use.

Dependencies moved in this CL:
pending_extension_info
pending_extension_manager

TBR=sky
BUG=298537

Review URL: https://codereview.chromium.org/93703002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237744 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237744
Restore display rect after getting the height

TBR=ben@chromium.org

Review URL: https://codereview.chromium.org/90683002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237745 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237745