Switch the inheritance of WebView from WebWidget to protected.

content/renderer/render_view_impl.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/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 611 matching lines @@
       history_list_length_(0),
       frames_in_progress_(0),
       target_url_status_(TARGET_NONE),
       uses_temporary_zoom_level_(false),
 #if defined(OS_ANDROID)
       top_controls_constraints_(TOP_CONTROLS_STATE_BOTH),
 #endif
       top_controls_shrink_blink_size_(false),
       top_controls_height_(0.f),
       has_focus_(false),
+      webview_(nullptr),
       has_scrolled_focused_editable_node_into_rect_(false),
       page_zoom_level_(params.page_zoom_level),
       main_render_frame_(nullptr),
       frame_widget_(nullptr),
       speech_recognition_dispatcher_(NULL),
       mouse_lock_dispatcher_(NULL),
 #if defined(OS_ANDROID)
       expected_content_intent_id_(0),
 #endif
 #if defined(ENABLE_PLUGINS)
@@ skipping 13 matching lines @@
   WebFrame* opener_frame = RenderFrameImpl::ResolveOpener(
       params.opener_frame_route_id, &opener_view_routing_id);
   if (opener_view_routing_id != MSG_ROUTING_NONE && was_created_by_renderer)
     opener_id_ = opener_view_routing_id;
 
   display_mode_ = params.initial_size.display_mode;
 
   // Ensure we start with a valid next_page_id_ from the browser.
   DCHECK_GE(next_page_id_, 0);
 
-  webwidget_ = WebView::create(this);
+  webview_ = WebView::create(this);
+  webwidget_ = webview_->widget();
   webwidget_mouse_lock_target_.reset(new WebWidgetLockTarget(webwidget_));
 
   g_view_map.Get().insert(std::make_pair(webview(), this));
   g_routing_id_view_map.Get().insert(std::make_pair(GetRoutingID(), this));
 
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
 
   if (command_line.HasSwitch(switches::kStatsCollectionController))
     stats_collection_observer_.reset(new StatsCollectionObserver(this));
@@ skipping 468 matching lines @@
 void RenderViewImpl::AddObserver(RenderViewObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void RenderViewImpl::RemoveObserver(RenderViewObserver* observer) {
   observer->RenderViewGone();
   observers_.RemoveObserver(observer);
 }
 
 blink::WebView* RenderViewImpl::webview() const {
-  return static_cast<blink::WebView*>(webwidget());
+  return webview_;
 }
 
 #if defined(ENABLE_PLUGINS)
 void RenderViewImpl::PepperInstanceCreated(
     PepperPluginInstanceImpl* instance) {
   active_pepper_instances_.insert(instance);
 
   RenderFrameImpl* const render_frame = instance->render_frame();
   render_frame->Send(
       new FrameHostMsg_PepperInstanceCreated(render_frame->GetRoutingID()));
@@ skipping 1639 matching lines @@
 }
 
 void RenderViewImpl::CloseForFrame() {
   DCHECK(frame_widget_);
   frame_widget_->close();
   frame_widget_ = nullptr;
 }
 
 void RenderViewImpl::Close() {
   // We need to grab a pointer to the doomed WebView before we destroy it.
-  WebView* doomed = webview();
+  WebView* doomed = webview_;
   RenderWidget::Close();
+  webview_ = nullptr;
   g_view_map.Get().erase(doomed);
   g_routing_id_view_map.Get().erase(GetRoutingID());
   RenderThread::Get()->Send(new ViewHostMsg_Close_ACK(GetRoutingID()));
 }
 
 void RenderViewImpl::OnWasHidden() {
   RenderWidget::OnWasHidden();
 
 #if defined(OS_ANDROID) && defined(ENABLE_WEBRTC)
   RenderThreadImpl::current()->video_capture_impl_manager()->
@@ skipping 598 matching lines @@
   if (IsUseZoomForDSFEnabled()) {
     webview()->setZoomFactorForDeviceScaleFactor(device_scale_factor_);
   } else {
     webview()->setDeviceScaleFactor(device_scale_factor_);
   }
   webview()->settings()->setPreferCompositingToLCDTextEnabled(
       PreferCompositingToLCDText(compositor_deps_, device_scale_factor_));
 }
 
 }  // namespace content