[Drive] Add DriveServiceInterface::DeleteResource

 * Add DriveServiceInterface::DeleteResource
 * Implement DriveAPIService::DeleteResource

BUG=240165
R=hashimoto@chromium.org

Review URL: https://codereview.chromium.org/113803002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240278 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240278
Ensure view focused on first tab in FocusTraversal test.

BUG=276757

Review URL: https://codereview.chromium.org/87643002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240279 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240279