SetNeedsRedraw directly when updating a visible tile.

cc/layers/picture_layer.cc

 // Copyright 2012 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 "cc/layers/picture_layer.h"
 
 #include "base/auto_reset.h"
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/picture_layer_impl.h"
 #include "cc/resources/picture_pile.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "third_party/skia/include/core/SkPictureRecorder.h"
 #include "ui/gfx/geometry/rect_conversions.h"
 
 namespace cc {
 
 scoped_refptr<PictureLayer> PictureLayer::Create(ContentLayerClient* client) {
   return make_scoped_refptr(new PictureLayer(client));
 }
 
 PictureLayer::PictureLayer(ContentLayerClient* client)
     : client_(client),
       recording_source_(new PicturePile),
       instrumentation_object_tracker_(id()),
       update_source_frame_number_(-1),
       can_use_lcd_text_last_frame_(can_use_lcd_text()) {
 }
 
+PictureLayer::PictureLayer(ContentLayerClient* client,
+                           scoped_ptr<RecordingSource> source)
+    : PictureLayer(client) {
+  recording_source_ = source.Pass();
+}
+
 PictureLayer::~PictureLayer() {
 }
 
 scoped_ptr<LayerImpl> PictureLayer::CreateLayerImpl(LayerTreeImpl* tree_impl) {
   return PictureLayerImpl::Create(tree_impl, id());
 }
 
 void PictureLayer::PushPropertiesTo(LayerImpl* base_layer) {
   Layer::PushPropertiesTo(base_layer);
   PictureLayerImpl* layer_impl = static_cast<PictureLayerImpl*>(base_layer);
@@ skipping 154 matching lines @@
 
 bool PictureLayer::HasDrawableContent() const {
   return client_ && Layer::HasDrawableContent();
 }
 
 void PictureLayer::RunMicroBenchmark(MicroBenchmark* benchmark) {
   benchmark->RunOnLayer(this);
 }
 
 }  // namespace cc