blimp: Update page load status update indicator to use first paint.

content/renderer/gpu/queue_message_swap_promise.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/gpu/queue_message_swap_promise.h"
 
+#include "base/command_line.h"
+#include "content/public/common/content_switches.h"
+#include "content/public/renderer/render_thread.h"
 #include "content/renderer/gpu/frame_swap_message_queue.h"
 #include "ipc/ipc_sync_message_filter.h"
 
 namespace content {
 
 QueueMessageSwapPromise::QueueMessageSwapPromise(
     scoped_refptr<IPC::SyncMessageFilter> message_sender,
     scoped_refptr<content::FrameSwapMessageQueue> message_queue,
     int source_frame_number)
     : message_sender_(message_sender),
@@ skipping 14 matching lines @@
   DCHECK(completed_);
 #endif
 }
 
 void QueueMessageSwapPromise::DidActivate() {
 #if DCHECK_IS_ON()
   DCHECK(!completed_);
 #endif
   message_queue_->DidActivate(source_frame_number_);
   // The OutputSurface will take care of the Drain+Send.
+
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kUseRemoteCompositing)) {
+    // The remote compositing mode doesn't have an output surface, so we need to
+    // Drain+Send on activation. Also, we can't use the SyncMessageFilter, since
+    // this call is actually made on the main thread.
+    std::vector<std::unique_ptr<IPC::Message>> messages_to_deliver;
+    std::unique_ptr<FrameSwapMessageQueue::SendMessageScope>
+        send_message_scope = message_queue_->AcquireSendMessageScope();
+    message_queue_->DrainMessages(&messages_to_deliver);
+    for (auto& message : messages_to_deliver)
+      RenderThread::Get()->Send(message.release());
+    PromiseCompleted();
+  }
 }
 
 void QueueMessageSwapPromise::DidSwap(cc::CompositorFrameMetadata* metadata) {
 #if DCHECK_IS_ON()
   DCHECK(!completed_);
 #endif
   message_queue_->DidSwap(source_frame_number_);
   // The OutputSurface will take care of the Drain+Send.
   PromiseCompleted();
 }
@@ skipping 14 matching lines @@
 #if DCHECK_IS_ON()
   completed_ = true;
 #endif
 }
 
 int64_t QueueMessageSwapPromise::TraceId() const {
   return 0;
 }
 
 }  // namespace content