SetNeedsRedraw directly when updating a visible tile.

cc/test/fake_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/test/fake_picture_layer.h"
 
+#include "cc/test/delayed_raster_picture_pile_impl.h"
 #include "cc/test/fake_picture_layer_impl.h"
 
 namespace cc {
 
 FakePictureLayer::FakePictureLayer(ContentLayerClient* client)
     : PictureLayer(client),
       update_count_(0),
       push_properties_count_(0),
+      output_surface_created_count_(0),
       always_update_resources_(false),
-      output_surface_created_count_(0) {
+      delayed_raster_trigger_(nullptr) {
   SetBounds(gfx::Size(1, 1));
   SetIsDrawable(true);
 }
 
 FakePictureLayer::~FakePictureLayer() {}
 
 scoped_ptr<LayerImpl> FakePictureLayer::CreateLayerImpl(
     LayerTreeImpl* tree_impl) {
   return FakePictureLayerImpl::Create(tree_impl, layer_id_);
 }
 
 bool FakePictureLayer::Update(ResourceUpdateQueue* queue,
                               const OcclusionTracker<Layer>* occlusion) {
   bool updated = PictureLayer::Update(queue, occlusion);
   update_count_++;
   return updated || always_update_resources_;
 }
 
 void FakePictureLayer::PushPropertiesTo(LayerImpl* layer) {
   PictureLayer::PushPropertiesTo(layer);
   push_properties_count_++;
 }
 
 void FakePictureLayer::OnOutputSurfaceCreated() {
   PictureLayer::OnOutputSurfaceCreated();
   output_surface_created_count_++;
 }
 
+scoped_refptr<PicturePileImpl> FakePictureLayer::CreatePicturePileImpl() {
+  if (!delayed_raster_trigger_)
+    return PictureLayer::CreatePicturePileImpl();
+  return DelayedRasterPicturePileImpl::CreateFromOther(
+      GetPicturePileForTesting(), delayed_raster_trigger_);

[reveman, 2014/11/10 23:43:02]

note: if you end up reusing FakePicturePileImpl then maybe a bit cleaner to
create a picturepileimpl of that type here unconditionally and instead handle
the case where delayed_raster_trigger_ is null inside the pile implementation
instead.

[danakj, 2014/11/12 20:19:40]

I added a constructor to FakePictureLayer to override the pile, since
PictureLayer now sets up the pile in its constructor.

+}
+
 }  // namespace cc