Adjust the structure of DEPS within //components.
As the majority of components are now shared by iOS, it no longer makes sense
to have a blanket allowance of IPC and //content/public/common in
//components. Instead, individual components should have to add these
dependencies explicitly, lessening the chance that bad dependencies creep in
(e.g., a //content/public/common dependency in code that iOS shares).
TBR=darin
Review URL: https://codereview.chromium.org/
266923008
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@268513 0039d316-1c4b-4281-b951-d872f2087c98