Move gamepad_service out of content/ and into device/

device/gamepad/gamepad_test_helpers.h

Index: device/gamepad/gamepad_test_helpers.h
diff --git a/device/gamepad/gamepad_test_helpers.h b/device/gamepad/gamepad_test_helpers.h
index 14eb1767387da7b53eae085dac2f4a0e749625d1..b4f8c934780369c0b4bc07375a608dc8064ba2e1 100644
--- a/device/gamepad/gamepad_test_helpers.h
+++ b/device/gamepad/gamepad_test_helpers.h
@@ -12,6 +12,7 @@
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "device/gamepad/gamepad_data_fetcher.h"
+#include "device/gamepad/gamepad_service.h"
 #include "device/gamepad/gamepad_shared_buffer.h"
 #include "third_party/WebKit/public/platform/WebGamepads.h"
 
@@ -51,22 +52,6 @@ class MockGamepadDataFetcher : public GamepadDataFetcher {
   DISALLOW_COPY_AND_ASSIGN(MockGamepadDataFetcher);
 };
 
-class MockGamepadSharedBuffer : public GamepadSharedBuffer {
- public:
-  MockGamepadSharedBuffer();
-
-  base::SharedMemory* shared_memory() override;
-  blink::WebGamepads* buffer() override;
-
-  void WriteBegin() override;
-  void WriteEnd() override;
-
- private:
-  base::SharedMemory shared_memory_;
-
-  DISALLOW_COPY_AND_ASSIGN(MockGamepadSharedBuffer);
-};
-
 // Base class for the other test helpers. This just sets up the system monitor.
 class GamepadTestHelper {
  public:
@@ -82,6 +67,26 @@ class GamepadTestHelper {
   DISALLOW_COPY_AND_ASSIGN(GamepadTestHelper);
 };
 
+// Constructs a GamepadService with a mock data source. This bypasses the
+// global singleton for the gamepad service.
+class GamepadServiceTestConstructor : public GamepadTestHelper {
+ public:
+  explicit GamepadServiceTestConstructor(const blink::WebGamepads& test_data);
+  ~GamepadServiceTestConstructor() override;
+
+  GamepadService* gamepad_service() { return gamepad_service_; }
+  MockGamepadDataFetcher* data_fetcher() { return data_fetcher_; }
+
+ private:
+  // Owning pointer (can't be a scoped_ptr due to private destructor).
+  GamepadService* gamepad_service_;
+
+  // Pointer owned by the provider (which is owned by the gamepad service).
+  MockGamepadDataFetcher* data_fetcher_;
+
+  DISALLOW_COPY_AND_ASSIGN(GamepadServiceTestConstructor);
+};
+
 }  // namespace device
 
 #endif  // DEVICE_GAMEPAD_GAMEPAD_TEST_HELPERS_H_