use enum to specify deviceSource for fling animation.

content/test/test_webkit_platform_support.cc

 // 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.
 
 #include "content/test/test_webkit_platform_support.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 198 matching lines @@
 blink::WebThemeEngine* TestWebKitPlatformSupport::themeEngine() {
   return active_theme_engine_;
 }
 #endif
 
 blink::WebCompositorSupport* TestWebKitPlatformSupport::compositorSupport() {
   return &compositor_support_;
 }
 
 blink::WebGestureCurve* TestWebKitPlatformSupport::createFlingAnimationCurve(
-    int device_source,
+    blink::WebGestureDevice device_source,
     const blink::WebFloatPoint& velocity,
     const blink::WebSize& cumulative_scroll) {
   // Caller will retain and release.
   return new WebGestureCurveMock(velocity, cumulative_scroll);
 }
 
 blink::WebUnitTestSupport* TestWebKitPlatformSupport::unitTestSupport() {
   return this;
 }
 
@@ skipping 53 matching lines @@
     const blink::WebString& path) {
   base::FilePath file_path = base::FilePath::FromUTF16Unsafe(path);
 
   std::string buffer;
   base::ReadFileToString(file_path, &buffer);
 
   return blink::WebData(buffer.data(), buffer.size());
 }
 
 }  // namespace content