compositor-worker: Initialize CW machinery plumbing to compositor and fire CW rAF callbacks.

third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp

 /*
  * Copyright (C) 2014 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 30 matching lines @@
 #include "core/frame/Settings.h"
 #include "core/frame/VisualViewport.h"
 #include "core/input/EventHandler.h"
 #include "core/layout/LayoutView.h"
 #include "core/layout/api/LayoutViewItem.h"
 #include "core/layout/compositing/PaintLayerCompositor.h"
 #include "core/page/ContextMenuController.h"
 #include "core/page/FocusController.h"
 #include "core/page/Page.h"
 #include "platform/KeyboardCodes.h"
+#include "platform/graphics/CompositorMutatorClient.h"
 #include "public/platform/WebFrameScheduler.h"
 #include "public/web/WebWidgetClient.h"
+#include "web/CompositorMutatorImpl.h"
 #include "web/CompositorProxyClientImpl.h"
 #include "web/ContextMenuAllowedScope.h"
 #include "web/WebDevToolsAgentImpl.h"
 #include "web/WebInputEventConversion.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/WebPluginContainerImpl.h"
 #include "web/WebRemoteFrameImpl.h"
 #include "web/WebViewFrameWidget.h"
 
 namespace blink {
@@ skipping 20 matching lines @@
 // static
 WebFrameWidgetsSet& WebFrameWidgetImpl::allInstances()
 {
     DEFINE_STATIC_LOCAL(WebFrameWidgetsSet, allInstances, ());
     return allInstances;
 }
 
 WebFrameWidgetImpl::WebFrameWidgetImpl(WebWidgetClient* client, WebLocalFrame* localRoot)
     : m_client(client)
     , m_localRoot(toWebLocalFrameImpl(localRoot))
+    , m_mutator(nullptr)
     , m_layerTreeView(nullptr)
     , m_rootLayer(nullptr)
     , m_rootGraphicsLayer(nullptr)
     , m_isAcceleratedCompositingActive(false)
     , m_layerTreeViewClosed(false)
     , m_suppressNextKeypressEvent(false)
     , m_ignoreInputEvents(false)
     , m_isTransparent(false)
     , m_selfKeepAlive(this)
 {
@@ skipping 23 matching lines @@
     WebDevToolsAgentImpl::webFrameWidgetImplClosed(this);
     DCHECK(allInstances().contains(this));
     allInstances().remove(this);
 
     m_localRoot->setFrameWidget(nullptr);
     m_localRoot = nullptr;
     // Reset the delegate to prevent notifications being sent as we're being
     // deleted.
     m_client = nullptr;
 
+    m_mutator = nullptr;
     m_layerTreeView = nullptr;
     m_rootLayer = nullptr;
     m_rootGraphicsLayer = nullptr;
 
     m_selfKeepAlive.clear();
 }
 
 WebSize WebFrameWidgetImpl::size()
 {
     return m_size;
@@ skipping 252 matching lines @@
     if (m_layerTreeView) {
         m_layerTreeView->setNeedsBeginFrame();
         return;
     }
     if (m_client)
         m_client->scheduleAnimation();
 }
 
 CompositorProxyClient* WebFrameWidgetImpl::createCompositorProxyClient()
 {
-    return new CompositorProxyClientImpl();
+    if (!m_mutator) {
+        std::unique_ptr<CompositorMutatorClient> mutatorClient = CompositorMutatorImpl::createClient();
+        m_mutator = static_cast<CompositorMutatorImpl*>(mutatorClient->mutator());
+        m_layerTreeView->setMutatorClient(std::move(mutatorClient));
+    }
+    return new CompositorProxyClientImpl(m_mutator);
 }
 
 void WebFrameWidgetImpl::applyViewportDeltas(
     const WebFloatSize& visualViewportDelta,
     const WebFloatSize& mainFrameDelta,
     const WebFloatSize& elasticOverscrollDelta,
     float pageScaleDelta,
     float topControlsDelta)
 {
     // FIXME: To be implemented.
@@ skipping 199 matching lines @@
 {
     return m_isAcceleratedCompositingActive;
 }
 
 void WebFrameWidgetImpl::willCloseLayerTreeView()
 {
     if (m_layerTreeView)
         page()->willCloseLayerTreeView(*m_layerTreeView);
 
     setIsAcceleratedCompositingActive(false);
+    m_mutator = nullptr;
     m_layerTreeView = nullptr;
     m_layerTreeViewClosed = true;
 }
 
 void WebFrameWidgetImpl::didChangeWindowResizerRect()
 {
     if (m_localRoot->frameView())
         m_localRoot->frameView()->windowResizerRectChanged();
 }
 
@@ skipping 352 matching lines @@
     Document* document = frame->document();
     if (!document)
         return nullptr;
 
     return document->focusedElement();
 }
 
 void WebFrameWidgetImpl::initializeLayerTreeView()
 {
     if (m_client) {
+        DCHECK(!m_mutator);
         m_client->initializeLayerTreeView();
         m_layerTreeView = m_client->layerTreeView();
     }
 
     if (WebDevToolsAgentImpl* devTools = m_localRoot->devToolsAgentImpl())
         devTools->layerTreeViewChanged(m_layerTreeView);
 
     page()->settings().setAcceleratedCompositingEnabled(m_layerTreeView);
     if (m_layerTreeView)
         page()->layerTreeViewInitialized(*m_layerTreeView);
@@ skipping 89 matching lines @@
 
 HitTestResult WebFrameWidgetImpl::hitTestResultForRootFramePos(const IntPoint& posInRootFrame)
 {
     IntPoint docPoint(m_localRoot->frame()->view()->rootFrameToContents(posInRootFrame));
     HitTestResult result = m_localRoot->frame()->eventHandler().hitTestResultAtPoint(docPoint, HitTestRequest::ReadOnly | HitTestRequest::Active);
     result.setToShadowHostIfInUserAgentShadowRoot();
     return result;
 }
 
 } // namespace blink