SetNeedsRedraw directly when updating a visible tile.

cc/test/fake_picture_layer.h

Index: cc/test/fake_picture_layer.h
diff --git a/cc/test/fake_picture_layer.h b/cc/test/fake_picture_layer.h
index 7aa155e1d9a3cf7c8ee4ff9cbc91f3abd62eaaf7..f42a14de1045256e1a59d74953ac4b3ba5085ee1 100644
--- a/cc/test/fake_picture_layer.h
+++ b/cc/test/fake_picture_layer.h
@@ -8,15 +8,21 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/layers/picture_layer.h"
+#include "cc/resources/recording_source.h"
 
 namespace cc {
-
 class FakePictureLayer : public PictureLayer {
  public:
   static scoped_refptr<FakePictureLayer> Create(ContentLayerClient* client) {
     return make_scoped_refptr(new FakePictureLayer(client));
   }
 
+  static scoped_refptr<FakePictureLayer> CreateWithRecordingSource(
+      ContentLayerClient* client,
+      scoped_ptr<RecordingSource> source) {
+    return make_scoped_refptr(new FakePictureLayer(client, source.Pass()));
+  }
+
   scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
 
   size_t update_count() const { return update_count_; }
@@ -41,12 +47,14 @@ class FakePictureLayer : public PictureLayer {
 
  private:
   explicit FakePictureLayer(ContentLayerClient* client);
+  FakePictureLayer(ContentLayerClient* client,
+                   scoped_ptr<RecordingSource> source);
   ~FakePictureLayer() override;
 
   size_t update_count_;
   size_t push_properties_count_;
-  bool always_update_resources_;
   size_t output_surface_created_count_;
+  bool always_update_resources_;
 };
 
 }  // namespace cc