Run all LayerTreeHost tests with a delegating renderer.

cc/output/delegating_renderer.cc

Index: cc/output/delegating_renderer.cc
diff --git a/cc/output/delegating_renderer.cc b/cc/output/delegating_renderer.cc
index 2ee755a8a5dbafebc6b3044c3e103fbe730d76ff..e7c6235a5b5f8af4b78725177e2b1833557c4fdf 100644
--- a/cc/output/delegating_renderer.cc
+++ b/cc/output/delegating_renderer.cc
@@ -11,7 +11,6 @@
 #include "base/debug/trace_event.h"
 #include "base/string_util.h"
 #include "base/strings/string_split.h"
-#include "cc/output/compositor_frame.h"
 #include "cc/output/compositor_frame_ack.h"
 #include "cc/quads/checkerboard_draw_quad.h"
 #include "cc/quads/debug_border_draw_quad.h"
@@ -133,20 +132,16 @@ static ResourceProvider::ResourceId AppendToArray(
 void DelegatingRenderer::DrawFrame(
     RenderPassList* render_passes_in_draw_order) {
   TRACE_EVENT0("cc", "DelegatingRenderer::DrawFrame");
-  render_passes_for_swap_buffers_.swap(*render_passes_in_draw_order);
-  render_passes_in_draw_order->clear();
-}
 
-void DelegatingRenderer::SwapBuffers(const LatencyInfo& latency_info) {
-  TRACE_EVENT0("cc", "DelegatingRenderer::SwapBuffers");
+  DCHECK(!frame_for_swap_buffers_.delegated_frame_data);
 
-  CompositorFrame out_frame;
-  out_frame.metadata = client_->MakeCompositorFrameMetadata();
+  frame_for_swap_buffers_.metadata = client_->MakeCompositorFrameMetadata();
 
-  out_frame.delegated_frame_data = make_scoped_ptr(new DelegatedFrameData);
-  DelegatedFrameData& out_data = *out_frame.delegated_frame_data;
+  frame_for_swap_buffers_.delegated_frame_data =
+      make_scoped_ptr(new DelegatedFrameData);
+  DelegatedFrameData& out_data = *frame_for_swap_buffers_.delegated_frame_data;
   // Move the render passes and resources into the |out_frame|.
-  out_data.render_pass_list.swap(render_passes_for_swap_buffers_);
+  out_data.render_pass_list.swap(*render_passes_in_draw_order);
 
   // Collect all resource ids in the render passes into a ResourceIdArray.
   ResourceProvider::ResourceIdArray resources;
@@ -158,8 +153,13 @@ void DelegatingRenderer::SwapBuffers(const LatencyInfo& latency_info) {
       render_pass->quad_list[j]->IterateResources(append_to_array);
   }
   resource_provider_->PrepareSendToParent(resources, &out_data.resource_list);

[danakj, 2013/05/09 02:42:50]

DrawFrame needs to make this call. The resources here may not exist by the time
it gets to SwapBuffers if they don't get exported, as DidDraw() will delete the
resource it ships in the quad - it expects the quads to be consumed inside of
draw.

+}
+
+void DelegatingRenderer::SwapBuffers(const LatencyInfo& latency_info) {
+  TRACE_EVENT0("cc", "DelegatingRenderer::SwapBuffers");
 
-  output_surface_->SendFrameToParentCompositor(&out_frame);
+  output_surface_->SendFrameToParentCompositor(&frame_for_swap_buffers_);
+  DCHECK(!frame_for_swap_buffers_.delegated_frame_data);
 }
 
 void DelegatingRenderer::GetFramebufferPixels(void* pixels, gfx::Rect rect) {