Don't load Google Now when skip_session_components is true.

BUG=316518

Review URL: https://codereview.chromium.org/66233002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@234175 0039d316-1c4b-4281-b951-d872f2087c98
Fix WeakPtrFactory member placement in content/renderer/media/ classes.

BUG=303818

Review URL: https://codereview.chromium.org/67903002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@234176 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 234175
SVN changes up to revision 234176