browser: implement multiple permission requesting

content/browser/permissions/permission_service_impl.h

Index: content/browser/permissions/permission_service_impl.h
diff --git a/content/browser/permissions/permission_service_impl.h b/content/browser/permissions/permission_service_impl.h
index 26321870d3d7bcd6d210410a76496d5245f4742a..80536816dcd91542c2d2fed85fa78062e72d3d55 100644
--- a/content/browser/permissions/permission_service_impl.h
+++ b/content/browser/permissions/permission_service_impl.h
@@ -26,7 +26,6 @@ enum class PermissionType;
 class PermissionServiceImpl : public PermissionService {
  public:
   ~PermissionServiceImpl() override;
-

[mlamouri (slow - plz ping), 2015/09/23 16:37:37]

nit: do not remove this line.

[Lalit Maganti, 2015/09/24 09:24:11]

Done.

   // Clear pending operations currently run by the service. This will be called
   // by PermissionServiceContext when it will need the service to clear its
   // state for example, if the frame changes.
@@ -44,15 +43,14 @@ class PermissionServiceImpl : public PermissionService {
       mojo::Callback<void(mojo::Array<PermissionStatus>)>;
 
   struct PendingRequest {
-    PendingRequest(PermissionType permission, const GURL& origin,
-                   const PermissionStatusCallback& callback);
+    PendingRequest(const PermissionsStatusCallback& callback,
+                   int request_count);
     ~PendingRequest();
 
     // Request ID received from the PermissionManager.
     int id;
-    PermissionType permission;
-    GURL origin;
-    PermissionStatusCallback callback;
+    PermissionsStatusCallback callback;
+    int request_count;
   };
   using RequestsMap = IDMap<PendingRequest, IDMapOwnPointer>;
 
@@ -92,7 +90,12 @@ class PermissionServiceImpl : public PermissionService {
 
   void OnConnectionError();
 
-  void OnRequestPermissionResponse(int request_id, PermissionStatus status);
+  void OnRequestPermissionResponse(
+      int pending_request_id,
+      PermissionStatus status);
+  void OnRequestPermissionsResponse(
+      int pending_request_id,
+      const std::vector<PermissionStatus>& result);
 
   PermissionStatus GetPermissionStatusFromName(PermissionName permission,
                                                const GURL& origin);