Implement a permission check for push.

chrome/browser/profiles/profile.h

Index: chrome/browser/profiles/profile.h
diff --git a/chrome/browser/profiles/profile.h b/chrome/browser/profiles/profile.h
index 1f5b50190b1670bc15d6bffc382a6123202f8cd8..7e0463f47b4aca59f2a80def93f35ad18d3e140a 100644
--- a/chrome/browser/profiles/profile.h
+++ b/chrome/browser/profiles/profile.h
@@ -55,6 +55,10 @@ namespace fileapi {
 class FileSystemContext;
 }
 
+namespace gcm {
+class GCMPermissionContext;
+}
+
 namespace history {
 class TopSites;
 }
@@ -364,6 +368,8 @@ class Profile : public content::BrowserContext {
   // Returns how the last session was shutdown.
   virtual ExitType GetLastSessionExitType() = 0;
 
+  virtual gcm::GCMPermissionContext* GetPushMessagingPermissionContext() = 0;
+
   // Stop sending accessibility events until ResumeAccessibilityEvents().
   // Calls to Pause nest; no events will be sent until the number of
   // Resume calls matches the number of Pause calls received.