Removed QuadSink and MockQuadCuller

cc/layers/io_surface_layer_impl.cc

Index: cc/layers/io_surface_layer_impl.cc
diff --git a/cc/layers/io_surface_layer_impl.cc b/cc/layers/io_surface_layer_impl.cc
index 65fb6b2230858edd14fe73b8cddaccf62281bfe5..8f6c46c4864a5d00d8ead23c40929a7b5aa7dfd4 100644
--- a/cc/layers/io_surface_layer_impl.cc
+++ b/cc/layers/io_surface_layer_impl.cc
@@ -5,11 +5,11 @@
 #include "cc/layers/io_surface_layer_impl.h"
 
 #include "base/strings/stringprintf.h"
-#include "cc/layers/quad_sink.h"
 #include "cc/output/gl_renderer.h"  // For the GLC() macro.
 #include "cc/output/output_surface.h"
 #include "cc/quads/io_surface_draw_quad.h"
 #include "cc/trees/layer_tree_impl.h"
+#include "cc/trees/occlusion_tracker.h"
 #include "gpu/GLES2/gl2extchromium.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "third_party/khronos/GLES2/gl2.h"
@@ -64,17 +64,20 @@ bool IOSurfaceLayerImpl::WillDraw(DrawMode draw_mode,
   return LayerImpl::WillDraw(draw_mode, resource_provider);
 }
 
-void IOSurfaceLayerImpl::AppendQuads(QuadSink* quad_sink,
-                                     AppendQuadsData* append_quads_data) {
-  SharedQuadState* shared_quad_state = quad_sink->CreateSharedQuadState();
+void IOSurfaceLayerImpl::AppendQuads(
+    RenderPass* render_pass,
+    const OcclusionTracker<LayerImpl>& occlusion_tracker,
+    AppendQuadsData* append_quads_data) {
+  SharedQuadState* shared_quad_state =
+      render_pass->CreateAndAppendSharedQuadState();
   PopulateSharedQuadState(shared_quad_state);
 
   AppendDebugBorderQuad(
-      quad_sink, content_bounds(), shared_quad_state, append_quads_data);
+      render_pass, content_bounds(), shared_quad_state, append_quads_data);
 
   gfx::Rect quad_rect(content_bounds());
   gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
-  gfx::Rect visible_quad_rect = quad_sink->UnoccludedContentRect(
+  gfx::Rect visible_quad_rect = occlusion_tracker.UnoccludedContentRect(
       quad_rect, draw_properties().target_space_transform);
   if (visible_quad_rect.IsEmpty())
     return;
@@ -87,7 +90,7 @@ void IOSurfaceLayerImpl::AppendQuads(QuadSink* quad_sink,
                io_surface_size_,
                io_surface_resource_id_,
                IOSurfaceDrawQuad::FLIPPED);
-  quad_sink->Append(quad.PassAs<DrawQuad>());
+  render_pass->AppendDrawQuad(quad.PassAs<DrawQuad>());
 }
 
 void IOSurfaceLayerImpl::ReleaseResources() {