Cleanup namespace usage in Source/core/modules/[battery/* to indexeddb/*]

Source/modules/gamepad/GamepadList.h

Index: Source/modules/gamepad/GamepadList.h
diff --git a/Source/modules/gamepad/GamepadList.h b/Source/modules/gamepad/GamepadList.h
index b7e02f1479df217600be00e4116fc59bbf0b45ab..d93849892aa0caa136f940d0cb84d07e669e86d7 100644
--- a/Source/modules/gamepad/GamepadList.h
+++ b/Source/modules/gamepad/GamepadList.h
@@ -42,13 +42,13 @@ public:
 
     void set(unsigned index, Gamepad*);
     Gamepad* item(unsigned index);
-    unsigned length() const { return blink::WebGamepads::itemsLengthCap; }
+    unsigned length() const { return WebGamepads::itemsLengthCap; }
 
     void trace(Visitor*);
 
 private:
     GamepadList();
-    Member<Gamepad> m_items[blink::WebGamepads::itemsLengthCap];
+    Member<Gamepad> m_items[WebGamepads::itemsLengthCap];
 };
 
 } // namespace blink