content: permissions: add plumbing to request permissions

content/child/permissions/permission_dispatcher.h

Index: content/child/permissions/permission_dispatcher.h
diff --git a/content/child/permissions/permission_dispatcher.h b/content/child/permissions/permission_dispatcher.h
index e0a61a6ec824b90cdb76203650a32036016833e2..87e464763d4aaeb9d1ee1a1db2205a4a3b92f6d9 100644
--- a/content/child/permissions/permission_dispatcher.h
+++ b/content/child/permissions/permission_dispatcher.h
@@ -40,6 +40,9 @@ class PermissionDispatcher : public blink::WebPermissionClient,
   virtual void queryPermission(blink::WebPermissionType type,
                                const blink::WebURL& origin,
                                blink::WebPermissionCallback* callback);
+  virtual void requestPermission(blink::WebPermissionType,
+                                 const blink::WebURL& origin,
+                                 blink::WebPermissionCallback* callback);
   virtual void revokePermission(blink::WebPermissionType,
                                 const blink::WebURL& origin,
                                 blink::WebPermissionCallback* callback);
@@ -53,6 +56,10 @@ class PermissionDispatcher : public blink::WebPermissionClient,
                                 const std::string& origin,
                                 blink::WebPermissionCallback* callback,
                                 int worker_thread_id);
+  void RequestPermissionForWorker(blink::WebPermissionType type,
+                                  const std::string& origin,
+                                  blink::WebPermissionCallback* callback,
+                                  int worker_thread_id);
   void RevokePermissionForWorker(blink::WebPermissionType type,
                                  const std::string& origin,
                                  blink::WebPermissionCallback* callback,
@@ -83,6 +90,10 @@ class PermissionDispatcher : public blink::WebPermissionClient,
                                const std::string& origin,
                                blink::WebPermissionCallback* callback,
                                int worker_thread_id);
+  void RequestPermissionInternal(blink::WebPermissionType type,
+                                const std::string& origin,
+                                blink::WebPermissionCallback* callback,
+                                int worker_thread_id);
   void RevokePermissionInternal(blink::WebPermissionType type,
                                 const std::string& origin,
                                 blink::WebPermissionCallback* callback,