Implement PushManager#hasPermission

content/public/browser/push_messaging_service.h

Index: content/public/browser/push_messaging_service.h
diff --git a/content/public/browser/push_messaging_service.h b/content/public/browser/push_messaging_service.h
index 5154febd053765aabd1994dffcd0c4503feec144..d0cd124a823949f449da1f9c3d01ebcdaf880018 100644
--- a/content/public/browser/push_messaging_service.h
+++ b/content/public/browser/push_messaging_service.h
@@ -10,6 +10,7 @@
 #include "base/callback.h"
 #include "content/common/content_export.h"
 #include "content/public/common/push_messaging_status.h"
+#include "third_party/WebKit/public/platform/WebPushPermissionStatus.h"
 #include "url/gurl.h"
 
 namespace content {
@@ -24,6 +25,8 @@ class CONTENT_EXPORT PushMessagingService {
       RegisterCallback;
 
   virtual ~PushMessagingService() {}
+
+  // Register the given |sender_id| with GCM.
   virtual void Register(const GURL& origin,
                         int64 service_worker_registration_id,
                         const std::string& sender_id,
@@ -31,6 +34,13 @@ class CONTENT_EXPORT PushMessagingService {
                         int render_frame_id,
                         bool user_gesture,
                         const RegisterCallback& callback) = 0;
+
+  // Check whether the requester has permission to register for Push
+  // Messages
+  virtual blink::WebPushPermissionStatus GetPermissionStatus(
+      const GURL& requesting_origin,
+      int renderer_id,
+      int render_frame_id) = 0;
 };
 
 }  // namespace content