Pass resourceless software mode in BeginFrameArgs

cc/trees/layer_tree_impl.cc

 // Copyright 2011 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/trees/layer_tree_impl.h"
 
 #include <limits>
 #include <set>
 
 #include "base/debug/trace_event.h"
@@ skipping 441 matching lines @@
 
   {
     TRACE_EVENT2("cc",
                  "LayerTreeImpl::UpdateDrawProperties",
                  "IsActive",
                  IsActiveTree(),
                  "SourceFrameNumber",
                  source_frame_number_);
     LayerImpl* page_scale_layer =
         page_scale_layer_ ? page_scale_layer_ : InnerViewportContainerLayer();
-    bool can_render_to_separate_surface =
-        !output_surface()->ForcedDrawToSoftwareDevice();
+    bool can_render_to_separate_surface = !resourceless_software_draw();
 
     ++render_surface_layer_list_id_;
     LayerTreeHostCommon::CalcDrawPropsImplInputs inputs(
         root_layer(),
         DrawViewportSize(),
         layer_tree_host_impl_->DrawTransform(),
         device_scale_factor(),
         total_page_scale_factor(),
         page_scale_layer,
         MaxTextureSize(),
@@ skipping 199 matching lines @@
 }
 
 PaintTimeCounter* LayerTreeImpl::paint_time_counter() const {
   return layer_tree_host_impl_->paint_time_counter();
 }
 
 MemoryHistory* LayerTreeImpl::memory_history() const {
   return layer_tree_host_impl_->memory_history();
 }
 
-bool LayerTreeImpl::device_viewport_valid_for_tile_management() const {
-  return layer_tree_host_impl_->device_viewport_valid_for_tile_management();
+bool LayerTreeImpl::resourceless_software_draw() const {

[danakj, 2014/07/10 18:33:59]

can we get rid of this method, is it used elsewhere? can we just call
GetDrawMode() in UpdateDrawProperties?

[boliu, 2014/07/10 18:40:36]

This is used by PictureLayerImpl, which doesn't need to know the other draw
modes.

But I can pass through GetDrawMode if you prefer?

+  return layer_tree_host_impl_->GetDrawMode() ==
+         DRAW_MODE_RESOURCELESS_SOFTWARE;
 }
 
 gfx::Size LayerTreeImpl::device_viewport_size() const {
   return layer_tree_host_impl_->device_viewport_size();
 }
 
 bool LayerTreeImpl::IsActiveTree() const {
   return layer_tree_host_impl_->active_tree() == this;
 }
 
@@ skipping 672 matching lines @@
 
 void LayerTreeImpl::RegisterPictureLayerImpl(PictureLayerImpl* layer) {
   layer_tree_host_impl_->RegisterPictureLayerImpl(layer);
 }
 
 void LayerTreeImpl::UnregisterPictureLayerImpl(PictureLayerImpl* layer) {
   layer_tree_host_impl_->UnregisterPictureLayerImpl(layer);
 }
 
 }  // namespace cc