Move WebMouseEvent into its own header file.

content/renderer/mouse_lock_dispatcher_browsertest.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 <string>
 
 #include "content/common/view_messages.h"
 #include "content/public/test/render_view_test.h"
 #include "content/renderer/mouse_lock_dispatcher.h"
 #include "content/renderer/render_view_impl.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/WebKit/public/platform/WebMouseEvent.h"
 
 using ::testing::_;
 
 namespace content {
 namespace {
 
 class MockLockTarget : public MouseLockDispatcher::LockTarget {
  public:
    MOCK_METHOD1(OnLockMouseACK, void(bool));
    MOCK_METHOD0(OnMouseLockLost, void());
@@ skipping 202 matching lines @@
   EXPECT_FALSE(dispatcher()->IsMouseLockedTo(alternate_target_));
 
   // Though the call to UnlockMouse should not unlock any target, we will
   // cause an unlock (as if e.g. user escaped mouse lock) and verify the
   // correct target is unlocked.
   widget()->OnMessageReceived(ViewMsg_MouseLockLost(route_id_));
   EXPECT_FALSE(dispatcher()->IsMouseLockedTo(target_));
 }
 
 }  // namespace content