Revert r229533 "[GCM] Initial work to set up directory structure and introduce socket integration"

Breaks main waterfall.

TBR=zea

Review URL: https://codereview.chromium.org/29273008

git-svn-id: http://src.chromium.org/svn/trunk/src/build@229543 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

all.gyp

@@ -193,11 +193,6 @@
             '../ui/app_list/app_list.gyp:*',
           ],
         }],
-        ['OS!="android" and OS!="ios"', {
-          'dependencies': [
-            '../google_apis/gcm/gcm.gyp:*',
-          ],
-        }],
       ],
     }, # target_name: All
     {