Sets a transparent background for out-of-process subframes.

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 "base/auto_reset.h"
@@ skipping 126 matching lines @@
 #include "third_party/WebKit/public/web/WebDataSource.h"
 #include "third_party/WebKit/public/web/WebDateTimeChooserCompletion.h"
 #include "third_party/WebKit/public/web/WebDateTimeChooserParams.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebElement.h"
 #include "third_party/WebKit/public/web/WebFileChooserParams.h"
 #include "third_party/WebKit/public/web/WebFormControlElement.h"
 #include "third_party/WebKit/public/web/WebFormElement.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebFrameContentDumper.h"
+#include "third_party/WebKit/public/web/WebFrameWidget.h"
 #include "third_party/WebKit/public/web/WebHistoryItem.h"
 #include "third_party/WebKit/public/web/WebHitTestResult.h"
 #include "third_party/WebKit/public/web/WebInputElement.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebMediaPlayerAction.h"
 #include "third_party/WebKit/public/web/WebNavigationPolicy.h"
 #include "third_party/WebKit/public/web/WebPageImportanceSignals.h"
 #include "third_party/WebKit/public/web/WebPlugin.h"
 #include "third_party/WebKit/public/web/WebPluginAction.h"
@@ skipping 1597 matching lines @@
   // calls DidStopLoading() without a matching DidStartLoading().
   if (frames_in_progress_ == 0)
     return;
   frames_in_progress_--;
   if (frames_in_progress_ == 0) {
     DidStopLoadingIcons();
     FOR_EACH_OBSERVER(RenderViewObserver, observers_, DidStopLoading());
   }
 }
 
-void RenderViewImpl::AttachWebFrameWidget(blink::WebWidget* frame_widget) {
+void RenderViewImpl::AttachWebFrameWidget(blink::WebFrameWidget* frame_widget) {
   // The previous WebFrameWidget must already be detached by CloseForFrame().
   DCHECK(!frame_widget_);
   frame_widget_ = frame_widget;
 }
 
 void RenderViewImpl::SetZoomLevel(double zoom_level) {
   webview()->setZoomLevel(zoom_level);
   FOR_EACH_OBSERVER(RenderViewObserver, observers_, OnZoomLevelChanged());
 }
 
@@ skipping 505 matching lines @@
 }
 
 void RenderViewImpl::SetWebkitPreferences(const WebPreferences& preferences) {
   OnUpdateWebPreferences(preferences);
 }
 
 blink::WebView* RenderViewImpl::GetWebView() {
   return webview();
 }
 
+blink::WebFrameWidget* RenderViewImpl::GetWebFrameWidget() {
+  return frame_widget_;
+}
+
 bool RenderViewImpl::ShouldDisplayScrollbars(int width, int height) const {
   return (!send_preferred_size_changes_ ||
           (disable_scrollbars_size_limit_.width() <= width ||
            disable_scrollbars_size_limit_.height() <= height));
 }
 
 int RenderViewImpl::GetEnabledBindings() const {
   return enabled_bindings_;
 }
 
@@ skipping 472 matching lines @@
   WebSize scroll_offset = main_frame->scrollOffset();
   return gfx::Vector2d(scroll_offset.width, scroll_offset.height);
 }
 
 void RenderViewImpl::OnClearFocusedElement() {
   if (webview())
     webview()->clearFocusedElement();
 }
 
 void RenderViewImpl::OnSetBackgroundOpaque(bool opaque) {
-  if (webview())
-    webview()->setIsTransparent(!opaque);
+  if (frame_widget_)
+    frame_widget_->setIsTransparent(!opaque);
   if (compositor_)
     compositor_->setHasTransparentBackground(!opaque);
 }
 
 void RenderViewImpl::OnSetActive(bool active) {
   if (webview())
     webview()->setIsActive(active);
 
 #if defined(ENABLE_PLUGINS) && defined(OS_MACOSX)
   std::set<WebPluginDelegateProxy*>::iterator plugin_it;
@@ skipping 753 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