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

third_party/WebKit/Source/web/WebViewImpl.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 150 matching lines @@
 
     // WebView methods:
     virtual bool isWebView() const { return true; }
     void setMainFrame(WebFrame*) override;
     void setCredentialManagerClient(WebCredentialManagerClient*) override;
     void setPrerendererClient(WebPrerendererClient*) override;
     void setSpellCheckClient(WebSpellCheckClient*) override;
     WebSettings* settings() override;
     WebString pageEncoding() const override;
     void setPageEncoding(const WebString&) override;
-    bool isTransparent() const override;
-    void setIsTransparent(bool value) override;
-    void setBaseBackgroundColor(WebColor) override;
     bool tabsToLinks() const override;
     void setTabsToLinks(bool value) override;
     bool tabKeyCyclesThroughElements() const override;
     void setTabKeyCyclesThroughElements(bool value) override;
     bool isActive() const override;
     void setIsActive(bool value) override;
     void setDomainRelaxationForbidden(bool, const WebString& scheme) override;
     void setWindowFeatures(const WebWindowFeatures&) override;
     void setOpenedByDOM() override;
     WebFrame* mainFrame() override;
@@ skipping 102 matching lines @@
     float defaultMaximumPageScaleFactor() const;
     float minimumPageScaleFactor() const;
     float maximumPageScaleFactor() const;
     float clampPageScaleFactorToLimits(float) const;
     void resetScaleStateImmediately();
 
     HitTestResult coreHitTestResultAt(const WebPoint&);
     void invalidateRect(const IntRect&);
 
     void setIgnoreInputEvents(bool newValue);
+    void setBaseBackgroundColor(WebColor);
     void setBackgroundColorOverride(WebColor);
     void setZoomFactorOverride(float);
     void updateShowFPSCounter();
     void setCompositorDeviceScaleFactorOverride(float);
     void setRootLayerTransform(const WebSize& offset, float scale);
 
     Color baseBackgroundColor() const { return m_baseBackgroundColor; }
 
     WebColor backgroundColorOverride() const { return m_backgroundColorOverride; }
 
@@ skipping 224 matching lines @@
     // view.
     void attachPaintArtifactCompositor();
 
     // Detaches the PaintArtifactCompositor and clears the layer tree view's
     // root layer.
     void detachPaintArtifactCompositor();
 
     // Use in Slimming Paint v2 to update the layer tree for the content.
     PaintArtifactCompositor& paintArtifactCompositor() { return m_paintArtifactCompositor; }
 
+    bool isTransparent() const;
+    void setIsTransparent(bool value);
+
 private:
     InspectorOverlay* inspectorOverlay();
 
     void setPageScaleFactorAndLocation(float, const FloatPoint&);
 
     void scrollAndRescaleViewports(float scaleFactor, const IntPoint& mainFrameOrigin, const FloatPoint& visualViewportOrigin);
 
     float maximumLegiblePageScale() const;
     void refreshPageScaleFactorAfterLayout();
     void resumeTreeViewCommitsIfRenderingReady();
@@ skipping 225 matching lines @@
 };
 
 DEFINE_TYPE_CASTS(WebViewImpl, WebWidget, widget, widget->isWebView(), widget.isWebView());
 // We have no ways to check if the specified WebView is an instance of
 // WebViewImpl because WebViewImpl is the only implementation of WebView.
 DEFINE_TYPE_CASTS(WebViewImpl, WebView, webView, true, true);
 
 } // namespace blink
 
 #endif