[blink] Support (semi-)transparent background colors in WebView/Frame.

third_party/WebKit/Source/web/WebViewFrameWidget.cpp

 // Copyright 2015 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 "web/WebViewFrameWidget.h"
 
 #include "web/WebInputMethodControllerImpl.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/WebViewImpl.h"
 
@@ skipping 156 matching lines @@
     WebBrowserControlsState current,
     bool animate) {
   return m_webView->updateBrowserControlsState(constraints, current, animate);
 }
 
 void WebViewFrameWidget::setVisibilityState(
     WebPageVisibilityState visibilityState) {
   return m_webView->setVisibilityState(visibilityState, false);
 }
 
-void WebViewFrameWidget::setIsTransparent(bool isTransparent) {
-  m_webView->setIsTransparent(isTransparent);
+void WebViewFrameWidget::setBackgroundColorOverride(WebColor color) {
+  m_webView->setBackgroundColorOverride(color);
 }
 
-bool WebViewFrameWidget::isTransparent() const {
-  return m_webView->isTransparent();
+void WebViewFrameWidget::clearBackgroundColorOverride() {
+  return m_webView->clearBackgroundColorOverride();
+}
+
+void WebViewFrameWidget::setBaseBackgroundColorOverride(WebColor color) {
+  m_webView->setBaseBackgroundColorOverride(color);
+}
+
+void WebViewFrameWidget::clearBaseBackgroundColorOverride() {
+  return m_webView->clearBaseBackgroundColorOverride();
 }
 
 void WebViewFrameWidget::setBaseBackgroundColor(WebColor color) {
   m_webView->setBaseBackgroundColor(color);
 }
 
 WebLocalFrameImpl* WebViewFrameWidget::localRoot() const {
   return m_webView->mainFrameImpl();
 }
 
@@ skipping 30 matching lines @@
 
 CompositorAnimationHost* WebViewFrameWidget::animationHost() const {
   return m_webView->animationHost();
 }
 
 HitTestResult WebViewFrameWidget::coreHitTestResultAt(const WebPoint& point) {
   return m_webView->coreHitTestResultAt(point);
 }
 
 }  // namespace blink