Fire visibilityChange event on out-of-process iframes.

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/WebLocalFrameImpl.h"
 #include "web/WebViewImpl.h"
 
 namespace blink {
 
 WebViewFrameWidget::WebViewFrameWidget(WebWidgetClient* client, WebViewImpl& webView, WebLocalFrameImpl& mainFrame)
     : m_client(client), m_webView(&webView), m_mainFrame(&mainFrame)
 {
     m_mainFrame->setFrameWidget(this);
+    m_webView->setCompositorVisibility(true);
 }
 
 WebViewFrameWidget::~WebViewFrameWidget()
 {
 }
 
 void WebViewFrameWidget::close()
 {
     // Note: it's important to use the captured main frame pointer here. During
     // a frame swap, the swapped frame is detached *after* the frame tree is
     // updated. If the main frame is being swapped, then
     // m_webView()->mainFrameImpl() will no longer point to the original frame.
+    m_webView->setCompositorVisibility(false);
     m_mainFrame->setFrameWidget(nullptr);
     m_mainFrame = nullptr;
     m_webView = nullptr;
     m_client = nullptr;
 
     // Note: this intentionally does not forward to WebView::close(), to make it
     // easier to untangle the cleanup logic later.
 
     delete this;
 }
@@ skipping 190 matching lines @@
 WebPagePopup* WebViewFrameWidget::pagePopup() const
 {
     return m_webView->pagePopup();
 }
 
 void WebViewFrameWidget::updateTopControlsState(WebTopControlsState constraints, WebTopControlsState current, bool animate)
 {
     return m_webView->updateTopControlsState(constraints, current, animate);
 }
 
-void WebViewFrameWidget::setVisibilityState(WebPageVisibilityState visibilityState, bool isInitialState)
+void WebViewFrameWidget::setVisibilityState(WebPageVisibilityState visibilityState)
 {
-    return m_webView->setVisibilityState(visibilityState, isInitialState);
+    return m_webView->setVisibilityState(visibilityState, false);
 }
 
 void WebViewFrameWidget::setIsTransparent(bool isTransparent)
 {
     m_webView->setIsTransparent(isTransparent);
 }
 
 bool WebViewFrameWidget::isTransparent() const
 {
     return m_webView->isTransparent();
 }
 
 void WebViewFrameWidget::setBaseBackgroundColor(WebColor color)
 {
     m_webView->setBaseBackgroundColor(color);
 }
 
 void WebViewFrameWidget::scheduleAnimation()
 {
     m_webView->scheduleAnimation();
 }
 
 CompositorProxyClient* WebViewFrameWidget::createCompositorProxyClient()
 {
     return m_webView->createCompositorProxyClient();
 }
 
 } // namespace blink