browser: implement multiple permission requesting

content/public/browser/permission_manager.h

Index: content/public/browser/permission_manager.h
diff --git a/content/public/browser/permission_manager.h b/content/public/browser/permission_manager.h
index 02cd23ba9e781dcf5051677787ca7167f24fcaf7..bdd104b3cc9482cd5268146e0eac077bbb5b4f41 100644
--- a/content/public/browser/permission_manager.h
+++ b/content/public/browser/permission_manager.h
@@ -33,6 +33,20 @@ class CONTENT_EXPORT PermissionManager {
       bool user_gesture,
       const base::Callback<void(PermissionStatus)>& callback) = 0;
 
+  // Requests multiple permissions on behalf of a frame identified by
+  // render_frame_host.
+  // When the permission request is handled, whether it failed, timed out or
+  // succeeded, the |callback| will be run.
+  // Returns a request id which can be used to cancel the request (see
+  // CancelPermissionRequest).

[mlamouri (slow - plz ping), 2015/09/16 15:08:09]

nit: mention the NO_PENDING_REQUEST constant.

Also, mention that the vector<PermissionStatus> will be ordered the same way as
the vector<PermissionType>

[Lalit Maganti, 2015/09/16 17:21:19]

Done.

+  virtual int RequestPermissions(
+      const std::vector<PermissionType>& permission,
+      RenderFrameHost* render_frame_host,
+      const GURL& requesting_origin,
+      bool user_gesture,
+      const base::Callback<void(
+          const std::vector<PermissionStatus>&)>& callback) = 0;

[mlamouri (slow - plz ping), 2015/09/16 15:08:09]

You are still missing the update to aw_permission_manager.{h,cc}

[Lalit Maganti, 2015/09/16 17:21:18]

Good point. Should I implement it properly? If so I'll have to understand how
their whole system works.

+
   // Cancels a previous permission request specified by |request_id|.
   virtual void CancelPermissionRequest(RenderFrameHost* render_frame_host,
                                        int request_id) = 0;