Gamepad API: add support for connection events

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 <vector>
@@ skipping 384 matching lines @@
 
   AddFilter((new IndexedDBMessageFilter(thread_safe_sender()))->GetFilter());
 
   AddFilter((new EmbeddedWorkerContextMessageFilter())->GetFilter());
 
 #if defined(USE_MOJO)
   // MojoRenderProcessObserver deletes itself as necessary.
   new MojoRenderProcessObserver(this);
 #endif
 
+  gamepad_shared_memory_reader_ =
+      new GamepadSharedMemoryReader(GetIOMessageLoopProxy());
+  AddFilter(gamepad_shared_memory_reader_.get());
+
   GetContentClient()->renderer()->RenderThreadStarted();
 
   InitSkiaEventTracer();
 
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   if (command_line.HasSwitch(cc::switches::kEnableGpuBenchmarking))
       RegisterExtension(GpuBenchmarkingExtension::Get());
 
   is_impl_side_painting_enabled_ =
       command_line.HasSwitch(switches::kEnableImplSidePainting) &&
@@ skipping 1066 matching lines @@
 
 void RenderThreadImpl::SetFlingCurveParameters(
     const std::vector<float>& new_touchpad,
     const std::vector<float>& new_touchscreen) {
   webkit_platform_support_->SetFlingCurveParameters(new_touchpad,
                                                     new_touchscreen);
 
 }
 
 void RenderThreadImpl::SampleGamepads(blink::WebGamepads* data) {
-  if (!gamepad_shared_memory_reader_)
-    gamepad_shared_memory_reader_.reset(new GamepadSharedMemoryReader);
   gamepad_shared_memory_reader_->SampleGamepads(*data);
 }
 
+void RenderThreadImpl::SetGamepadListener(blink::WebGamepadListener* listener) {
+  gamepad_shared_memory_reader_->SetGamepadListener(listener);
+}
+
 void RenderThreadImpl::WidgetCreated() {
   widget_count_++;
 }
 
 void RenderThreadImpl::WidgetDestroyed() {
   widget_count_--;
 }
 
 void RenderThreadImpl::WidgetHidden() {
   DCHECK_LT(hidden_widget_count_, widget_count_);
@@ skipping 16 matching lines @@
   hidden_widget_count_--;
 
   if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) {
     return;
   }
 
   ScheduleIdleHandler(kLongIdleHandlerDelayMs);
 }
 
 }  // namespace content