Gamepad API: add test support for gamepad events

content/public/test/layouttest_support.h

Index: content/public/test/layouttest_support.h
diff --git a/content/public/test/layouttest_support.h b/content/public/test/layouttest_support.h
index 370a6e41afdab9a2eae3b4c659f59ff9dcdd23f2..6c7e847723a573cff9d84187646af181cdb458bf 100644
--- a/content/public/test/layouttest_support.h
+++ b/content/public/test/layouttest_support.h
@@ -11,6 +11,7 @@
 namespace blink {
 class WebDeviceMotionData;
 class WebDeviceOrientationData;
+class WebGamepad;
 class WebGamepads;
 struct WebSize;
 }
@@ -42,6 +43,12 @@ void EnableWebTestProxyCreation(const base::Callback<
 // WebKitPlatformSupport::sampleGamepads().
 void SetMockGamepads(const blink::WebGamepads& pads);
 
+// Notifies blink about a new gamepad.
+void MockGamepadConnected(int index, const blink::WebGamepad& pad);
+
+// Notifies blink that a gamepad has been disconnected.
+void MockGamepadDisconnected(int index, const blink::WebGamepad& pad);
+
 // Sets WebDeviceMotionData that should be used when registering
 // a listener through WebKitPlatformSupport::setDeviceMotionListener().
 void SetMockDeviceMotionData(const blink::WebDeviceMotionData& data);