[Device Service] Move Gamepad Blink headers to be part of the Gamepad client library

content/shell/test_runner/gamepad_controller.h

Index: content/shell/test_runner/gamepad_controller.h
diff --git a/content/shell/test_runner/gamepad_controller.h b/content/shell/test_runner/gamepad_controller.h
index 36aa1f1687385917a24241d49ee18db744bba199..787eec5e2728bbd77cdff17cdebf66ee44c0819c 100644
--- a/content/shell/test_runner/gamepad_controller.h
+++ b/content/shell/test_runner/gamepad_controller.h
@@ -10,7 +10,7 @@
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "content/shell/test_runner/test_runner_export.h"
-#include "third_party/WebKit/public/platform/WebGamepads.h"
+#include "device/gamepad/public/cpp/gamepads.h"
 
 namespace blink {
 class WebFrame;
@@ -30,7 +30,7 @@ class TEST_RUNNER_EXPORT GamepadController
   void Reset();
   void Install(blink::WebFrame* frame);
 
-  void SampleGamepads(blink::WebGamepads& gamepads);
+  void SampleGamepads(device::Gamepads& gamepads);
   void SetListener(blink::WebGamepadListener* listener);
 
  private:
@@ -55,7 +55,7 @@ class TEST_RUNNER_EXPORT GamepadController
 
   blink::WebGamepadListener* listener_;
 
-  blink::WebGamepads gamepads_;
+  device::Gamepads gamepads_;
 
   // Mapping from gamepad index to connection state.
   std::map<int, bool> pending_changes_;