Add Mac implementation of data_fetcher for gamepad.

content/browser/gamepad/gamepad_provider.cc

 // Copyright (c) 2011 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 <cmath>
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/task.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/browser/gamepad/gamepad_provider.h"
 #include "content/browser/gamepad/data_fetcher.h"
 #include "content/common/gamepad_messages.h"
 
 #if defined(OS_WIN)
 #include "content/browser/gamepad/data_fetcher_win.h"
+#elif defined(OS_MACOSX)
+#include "content/browser/gamepad/data_fetcher_mac.h"
 #endif
 
 namespace content {
 
 // Define the default data fetcher that GamepadProvider will use if none is
 // supplied. (GamepadPlatformDataFetcher).
 #if defined(OS_WIN)
 
 typedef GamepadDataFetcherWindows GamepadPlatformDataFetcher;
 
+#elif defined(OS_MACOSX)
+
+typedef GamepadDataFetcherMac GamepadPlatformDataFetcher;
+
 #else
 
 class GamepadEmptyDataFetcher : public GamepadDataFetcher {
  public:
   void GetGamepadData(WebKit::WebGamepads* pads, bool) {
     pads->length = 0;
   }
 };
 typedef GamepadEmptyDataFetcher GamepadPlatformDataFetcher;
 
@@ skipping 31 matching lines @@
 }
 
 base::SharedMemoryHandle GamepadProvider::GetRendererSharedMemoryHandle(
     base::ProcessHandle process) {
   base::SharedMemoryHandle renderer_handle;
   gamepad_shared_memory_.ShareToProcess(process, &renderer_handle);
   return renderer_handle;
 }
 
 void GamepadProvider::Pause() {
-  base::AutoLock lock(is_paused_lock_);
-  is_paused_ = true;
+  {
+    base::AutoLock lock(is_paused_lock_);
+    is_paused_ = true;
+  }
+  if (data_fetcher_.get())
+    data_fetcher_->PauseHint(true);
 }
 
 void GamepadProvider::Resume() {
   {
     base::AutoLock lock(is_paused_lock_);
     if (!is_paused_)
         return;
     is_paused_ = false;
   }
+  if (data_fetcher_.get())
+    data_fetcher_->PauseHint(false);
 
   MessageLoop* polling_loop = polling_thread_->message_loop();
   polling_loop->PostTask(
       FROM_HERE,
       base::Bind(&GamepadProvider::ScheduleDoPoll, this));
 }
 
 void GamepadProvider::OnDevicesChanged() {
   base::AutoLock lock(devices_changed_lock_);
   devices_changed_ = true;
@@ skipping 53 matching lines @@
       kDesiredSamplingIntervalMs);
 }
 
 GamepadHardwareBuffer* GamepadProvider::SharedMemoryAsHardwareBuffer() {
   void* mem = gamepad_shared_memory_.memory();
   DCHECK(mem);
   return static_cast<GamepadHardwareBuffer*>(mem);
 }
 
 }  // namespace content