Clear last MouseMove root view in RWHIER if that view gets destroyed

content/browser/renderer_host/render_widget_host_view_base.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/render_widget_host_view_base.h"
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
@@ skipping 439 matching lines @@
     const gfx::Point& point,
     RenderWidgetHostViewBase* target_view) {
   NOTREACHED();
   return point;
 }
 
 bool RenderWidgetHostViewBase::IsRenderWidgetHostViewGuest() {
   return false;
 }
 
+bool RenderWidgetHostViewBase::IsRenderWidgetHostViewChildFrame() {
+  return false;
+}
+
 void RenderWidgetHostViewBase::TextInputStateChanged(
     const TextInputState& text_input_state) {
 // TODO(ekaramad): Use TextInputManager code paths for IME on other platforms.
 #if !defined(OS_ANDROID)
   if (GetTextInputManager())
     GetTextInputManager()->UpdateTextInputState(this, text_input_state);
 #endif
 }
 
 void RenderWidgetHostViewBase::ImeCancelComposition() {
@@ skipping 46 matching lines @@
 
 bool RenderWidgetHostViewBase::IsChildFrameForTesting() const {
   return false;
 }
 
 cc::SurfaceId RenderWidgetHostViewBase::SurfaceIdForTesting() const {
   return cc::SurfaceId();
 }
 
 }  // namespace content