Send foreground/backgroudn notifications to V8 independent from RunIdleHandlerWhenWidgetsHidden.

content/renderer/render_thread_impl.cc

 // Copyright (c) 2012 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/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <utility>
@@ skipping 2117 matching lines @@
 
 void RenderThreadImpl::WidgetRestored() {
   bool renderer_was_hidden = RendererIsHidden();
   DCHECK_GT(hidden_widget_count_, 0);
   hidden_widget_count_--;
   if (renderer_was_hidden)
     OnRendererVisible();
 }
 
 void RenderThreadImpl::OnRendererHidden() {
+  blink::mainThreadIsolate()->IsolateInBackgroundNotification();
   // TODO(rmcilroy): Remove IdleHandler and replace it with an IdleTask
   // scheduled by the RendererScheduler - http://crbug.com/469210.
   if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden())
     return;
   ScheduleIdleHandler(kInitialIdleHandlerDelayMs);
-  blink::mainThreadIsolate()->IsolateInBackgroundNotification();
 }
 
 void RenderThreadImpl::OnRendererVisible() {
+  blink::mainThreadIsolate()->IsolateInForegroundNotification();
   if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden())
     return;
   ScheduleIdleHandler(kLongIdleHandlerDelayMs);
-  blink::mainThreadIsolate()->IsolateInForegroundNotification();
 }
 
 void RenderThreadImpl::ReleaseFreeMemory() {
   base::allocator::ReleaseFreeMemory();
   discardable_shared_memory_manager()->ReleaseFreeMemory();
 
   if (blink_platform_impl_)
     blink::decommitFreeableMemory();
 }
 
@@ skipping 17 matching lines @@
 }
 
 void RenderThreadImpl::PendingRenderFrameConnect::OnConnectionError() {
   size_t erased =
       RenderThreadImpl::current()->pending_render_frame_connects_.erase(
           routing_id_);
   DCHECK_EQ(1u, erased);
 }
 
 }  // namespace content