use enum to specify deviceSource for fling animation.

content/test/test_webkit_platform_support.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_TEST_TEST_WEBKIT_PLATFORM_SUPPORT_H_
 #define CONTENT_TEST_TEST_WEBKIT_PLATFORM_SUPPORT_H_
 
 #include "base/compiler_specific.h"
 #include "base/files/scoped_temp_dir.h"
 #include "content/child/blink_platform_impl.h"
@@ skipping 46 matching lines @@
 
   WebURLLoaderMockFactory* url_loader_factory() {
     return url_loader_factory_.get();
   }
 
   const base::FilePath& file_system_root() const {
     return file_system_root_.path();
   }
 
   virtual blink::WebGestureCurve* createFlingAnimationCurve(
-      int device_source,
+      blink::WebGestureDevice device_source,
       const blink::WebFloatPoint& velocity,
-      const blink::WebSize& cumulative_scroll);
+      const blink::WebSize& cumulative_scroll) OVERRIDE;
 
   virtual blink::WebUnitTestSupport* unitTestSupport();
 
   // WebUnitTestSupport implementation
   virtual void registerMockedURL(const blink::WebURL& url,
                                  const blink::WebURLResponse& response,
                                  const blink::WebString& filePath);
   virtual void registerMockedErrorURL(const blink::WebURL& url,
                                       const blink::WebURLResponse& response,
                                       const blink::WebURLError& error);
@@ skipping 16 matching lines @@
 
 #if defined(OS_WIN) || defined(OS_MACOSX)
   blink::WebThemeEngine* active_theme_engine_;
 #endif
   DISALLOW_COPY_AND_ASSIGN(TestWebKitPlatformSupport);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_TEST_WEBKIT_PLATFORM_SUPPORT_H_