Move WebMouseWheelEvent into its own header file.

content/browser/renderer_host/overscroll_controller.cc

 // Copyright (c) 2012 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/browser/renderer_host/overscroll_controller.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "content/browser/renderer_host/overscroll_controller_delegate.h"
 #include "content/public/browser/overscroll_configuration.h"
 #include "content/public/common/content_switches.h"
+#include "third_party/WebKit/public/platform/WebMouseWheelEvent.h"
 
 using blink::WebInputEvent;
 
 namespace {
 
 bool IsScrollEndEffectEnabled() {
   return base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
       switches::kScrollEndEffect) == "1";
 }
 
@@ skipping 396 matching lines @@
   overscroll_mode_ = mode;
   if (overscroll_mode_ == OVERSCROLL_NONE)
     overscroll_delta_x_ = overscroll_delta_y_ = 0.f;
   else
     scroll_state_ = STATE_OVERSCROLLING;
   if (delegate_)
     delegate_->OnOverscrollModeChange(old_mode, overscroll_mode_);
 }
 
 }  // namespace content