Enable Scroll Animation for RenderLayerScrollableArea

Source/core/page/PageAnimator.cpp

 // Copyright 2014 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 "config.h"
 #include "core/page/PageAnimator.h"
 
 #include "core/animation/DocumentAnimations.h"
 #include "core/dom/Document.h"
 #include "core/frame/FrameView.h"
@@ skipping 11 matching lines @@
     , m_servicingAnimations(false)
     , m_updatingLayoutAndStyleForPainting(false)
 {
 }
 
 void PageAnimator::serviceScriptedAnimations(double monotonicAnimationStartTime)
 {
     m_animationFramePending = false;
     TemporaryChange<bool> servicing(m_servicingAnimations, true);
 
-    for (RefPtr<LocalFrame> frame = m_page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
-        frame->view()->serviceScrollAnimations();
-        DocumentAnimations::updateAnimationTimingForAnimationFrame(*frame->document(), monotonicAnimationStartTime);
-        SVGDocumentExtensions::serviceOnAnimationFrame(*frame->document(), monotonicAnimationStartTime);
+    Vector<RefPtr<Document> > documents;
+    for (RefPtr<LocalFrame> frame = m_page->mainFrame(); frame; frame = frame->tree().traverseNext())
+        documents.append(frame->document());
+
+    for (size_t i = 0; i < documents.size(); ++i) {
+        if (documents[i]->frame()) {
+            documents[i]->view()->serviceScrollAnimations();
+
+            if (const FrameView::ScrollableAreaSet* scrollableAreas = documents[i]->view()->scrollableAreas()) {
+                for (FrameView::ScrollableAreaSet::iterator it = scrollableAreas->begin(); it != scrollableAreas->end(); ++it)
+                    (*it)->serviceScrollAnimations();
+            }
+        }
     }
 
-    Vector<RefPtr<Document> > documents;
-    for (LocalFrame* frame = m_page->mainFrame(); frame; frame = frame->tree().traverseNext())
-        documents.append(frame->document());
+    for (size_t i = 0; i < documents.size(); ++i) {
+        DocumentAnimations::updateAnimationTimingForAnimationFrame(*documents[i], monotonicAnimationStartTime);
+        SVGDocumentExtensions::serviceOnAnimationFrame(*documents[i], monotonicAnimationStartTime);
+    }
 
     for (size_t i = 0; i < documents.size(); ++i)
         documents[i]->serviceScriptedAnimations(monotonicAnimationStartTime);
 
     // Frame callbacks might have started new players or caused existing players to become outdated.
     for (size_t i = 0; i < documents.size(); ++i)
         DocumentAnimations::updateOutdatedAnimationPlayersAfterFrameCallbacks(*documents[i]);
 }
 
 void PageAnimator::scheduleVisualUpdate()
@@ skipping 17 matching lines @@
     // setFrameRect(). This will be a quick operation for most frames, but the
     // NativeWindowWidgets will update a proper clipping region.
     view->setFrameRect(view->frameRect());
 
     // setFrameRect may have the side-effect of causing existing page layout to
     // be invalidated, so layout needs to be called last.
     view->updateLayoutAndStyleForPainting();
 }
 
 }