[blimp] Add SkPicture caching support.

cc/layers/picture_layer.cc

Index: cc/layers/picture_layer.cc
diff --git a/cc/layers/picture_layer.cc b/cc/layers/picture_layer.cc
index 526c7a498e72a2b52e3eb70014116f7cd66fa74f..99e203a1ec1604c4b689ef2143eefe69161182ff 100644
--- a/cc/layers/picture_layer.cc
+++ b/cc/layers/picture_layer.cc
@@ -72,6 +72,17 @@ void PictureLayer::SetLayerTreeHost(LayerTreeHost* host) {
 
   if (!recording_source_)
     recording_source_.reset(new RecordingSource);
+
+  // Ensure the recording source has a pointer to the  correct picture cache.
+  if (layer_tree_host()->IsRemoteServer()) {
+    recording_source_->SetEnginePictureCache(
+        layer_tree_host()->engine_picture_cache());
+  }
+  if (layer_tree_host()->IsRemoteClient()) {
+    recording_source_->SetClientPictureCache(
+        layer_tree_host()->client_picture_cache());
+  }
+
   recording_source_->SetSlowdownRasterScaleFactor(
       host->debug_state().slow_down_raster_scale_factor);
   // If we need to enable image decode tasks, then we have to generate the
@@ -179,9 +190,8 @@ void PictureLayer::LayerSpecificPropertiesToProto(
   DropRecordingSourceContentIfInvalid();
 
   proto::PictureLayerProperties* picture = proto->mutable_picture();
-  recording_source_->ToProtobuf(
-      picture->mutable_recording_source(),
-      layer_tree_host()->image_serialization_processor());
+  recording_source_->ToProtobuf(picture->mutable_recording_source());
+
   RegionToProto(last_updated_invalidation_, picture->mutable_invalidation());
   picture->set_is_mask(is_mask_);
   picture->set_nearest_neighbor(nearest_neighbor_);
@@ -198,12 +208,14 @@ void PictureLayer::FromLayerSpecificPropertiesProto(
   // If this is a new layer, ensure it has a recording source. During layer
   // hierarchy deserialization, ::SetLayerTreeHost(...) is not called, but
   // instead the member is set directly, so it needs to be set here explicitly.
-  if (!recording_source_)
+  if (!recording_source_) {
     recording_source_.reset(new RecordingSource);
+    // A RecordingSource is only ever deserialized on the client.
+    recording_source_->SetClientPictureCache(
+        layer_tree_host()->client_picture_cache());
+  }
 
-  recording_source_->FromProtobuf(
-      picture.recording_source(),
-      layer_tree_host()->image_serialization_processor());
+  recording_source_->FromProtobuf(picture.recording_source());
 
   Region new_invalidation = RegionFromProto(picture.invalidation());
   last_updated_invalidation_.Swap(&new_invalidation);