Gamepad: add test support for page visibility behavior

content/shell/renderer/test_runner/gamepad_controller.h

Index: content/shell/renderer/test_runner/gamepad_controller.h
diff --git a/content/shell/renderer/test_runner/gamepad_controller.h b/content/shell/renderer/test_runner/gamepad_controller.h
index b648fd08be275f79fe3ae1695c2f28520eb40edc..99b7efc285598a6b40cbcd3b1caa5e5e8ef9e726 100644
--- a/content/shell/renderer/test_runner/gamepad_controller.h
+++ b/content/shell/renderer/test_runner/gamepad_controller.h
@@ -5,26 +5,38 @@
 #ifndef CONTENT_SHELL_RENDERER_TEST_RUNNER_GAMEPAD_CONTROLLER_H_
 #define CONTENT_SHELL_RENDERER_TEST_RUNNER_GAMEPAD_CONTROLLER_H_
 
+#include <map>
+
 #include "base/memory/weak_ptr.h"
+#include "content/public/renderer/renderer_gamepad_provider.h"
 #include "third_party/WebKit/public/platform/WebGamepads.h"
 
 namespace blink {
 class WebFrame;
+class WebGamepadListener;
 }
 
 namespace content {
 
 class WebTestDelegate;
 
-class GamepadController : public base::SupportsWeakPtr<GamepadController> {
+class GamepadController
+    : public base::SupportsWeakPtr<GamepadController>,
+      public RendererGamepadProvider {
  public:
   GamepadController();
-  ~GamepadController();
+  virtual ~GamepadController();
 
   void Reset();
   void Install(blink::WebFrame* frame);
   void SetDelegate(WebTestDelegate* delegate);
 
+  // RendererGamepadProvider implementation.
+  virtual void SampleGamepads(
+      blink::WebGamepads& gamepads) OVERRIDE;
+  virtual void SetGamepadListener(
+      blink::WebGamepadListener* listener) OVERRIDE;
+
  private:
   friend class GamepadControllerBindings;
 
@@ -46,7 +58,10 @@ class GamepadController : public base::SupportsWeakPtr<GamepadController> {
 
   blink::WebGamepads gamepads_;
 
-  WebTestDelegate* delegate_;
+  blink::WebGamepadListener* listener_;
+
+  // Mapping from gamepad index to connection state.
+  std::map<int, bool> pending_changes_;
 
   base::WeakPtrFactory<GamepadController> weak_factory_;