Animations: Allow document animation timelines to have a playback rate

Source/core/inspector/InspectorPageAgent.cpp

 /*
  * Copyright (C) 2011 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 18 matching lines @@
  */
 
 #include "config.h"
 #include "core/inspector/InspectorPageAgent.h"
 
 #include "bindings/core/v8/DOMWrapperWorld.h"
 #include "bindings/core/v8/ScriptController.h"
 #include "bindings/core/v8/ScriptRegexp.h"
 #include "core/HTMLNames.h"
 #include "core/UserAgentStyleSheets.h"
+#include "core/animation/AnimationTimeline.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/css/resolver/ViewportStyleResolver.h"
 #include "core/dom/DOMImplementation.h"
 #include "core/dom/Document.h"
 #include "core/fetch/CSSStyleSheetResource.h"
 #include "core/fetch/FontResource.h"
 #include "core/fetch/ImageResource.h"
 #include "core/fetch/MemoryCache.h"
 #include "core/fetch/Resource.h"
@@ skipping 1419 matching lines @@
 {
     m_state->setBoolean(PageAgentState::screencastEnabled, false);
 }
 
 void InspectorPageAgent::setShowViewportSizeOnResize(ErrorString*, bool show, const bool* showGrid)
 {
     m_state->setBoolean(PageAgentState::showSizeOnResize, show);
     m_state->setBoolean(PageAgentState::showGridOnResize, asBool(showGrid));
 }
 
+void InspectorPageAgent::setAnimationsPlaybackRate(ErrorString*, double playbackRate)
+{
+    for (Frame* frame = m_page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
+        if (frame->isLocalFrame())
+            toLocalFrame(frame)->document()->timeline().setPlaybackRate(playbackRate);
+    }
+}
+
 void InspectorPageAgent::clearEditedResourcesContent()
 {
     m_editedResourceContent.clear();
 }
 
 void InspectorPageAgent::addEditedResourceContent(const String& url, const String& content)
 {
     m_editedResourceContent.set(url, content);
 }
 
 bool InspectorPageAgent::getEditedResourceContent(const String& url, String* content)
 {
     if (!m_editedResourceContent.contains(url))
         return false;
     *content = m_editedResourceContent.get(url);
     return true;
 }
 
 void InspectorPageAgent::trace(Visitor* visitor)
 {
     visitor->trace(m_page);
     visitor->trace(m_injectedScriptManager);
     visitor->trace(m_inspectorResourceContentLoader);
     InspectorBaseAgent::trace(visitor);
 }
 
 } // namespace blink