cc: Remove code for drawing checkerboard quads, it's not used.

mojo/converters/surfaces/surfaces_type_converters.cc

Index: mojo/converters/surfaces/surfaces_type_converters.cc
diff --git a/mojo/converters/surfaces/surfaces_type_converters.cc b/mojo/converters/surfaces/surfaces_type_converters.cc
index 23ba8fd515f7c95f1fd1d68484dacc9d7f4b6e3c..6ade3eeab5d468cc9d44252c022f6a927e80640c 100644
--- a/mojo/converters/surfaces/surfaces_type_converters.cc
+++ b/mojo/converters/surfaces/surfaces_type_converters.cc
@@ -7,7 +7,6 @@
 #include "base/macros.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/delegated_frame_data.h"
-#include "cc/quads/checkerboard_draw_quad.h"
 #include "cc/quads/debug_border_draw_quad.h"
 #include "cc/quads/draw_quad.h"
 #include "cc/quads/render_pass.h"
@@ -29,7 +28,6 @@ namespace mojo {
                                             MATERIAL_##value),     \
                  value##_enum_value_matches)
 
-ASSERT_ENUM_VALUES_EQUAL(CHECKERBOARD);
 ASSERT_ENUM_VALUES_EQUAL(DEBUG_BORDER);
 ASSERT_ENUM_VALUES_EQUAL(IO_SURFACE_CONTENT);
 ASSERT_ENUM_VALUES_EQUAL(PICTURE_CONTENT);
@@ -67,19 +65,6 @@ bool ConvertDrawQuad(const QuadPtr& input,
                      cc::SharedQuadState* sqs,
                      cc::RenderPass* render_pass) {
   switch (input->material) {
-    case MATERIAL_CHECKERBOARD: {
-      cc::CheckerboardDrawQuad* checkerboard_quad =
-          render_pass->CreateAndAppendDrawQuad<cc::CheckerboardDrawQuad>();
-      checkerboard_quad->SetAll(
-          sqs,
-          input->rect.To<gfx::Rect>(),
-          input->opaque_rect.To<gfx::Rect>(),
-          input->visible_rect.To<gfx::Rect>(),
-          input->needs_blending,
-          input->checkerboard_quad_state->color.To<SkColor>(),
-          input->checkerboard_quad_state->scale);
-      break;
-    }
     case MATERIAL_DEBUG_BORDER: {
       cc::DebugBorderDrawQuad* debug_border_quad =
           render_pass->CreateAndAppendDrawQuad<cc::DebugBorderDrawQuad>();
@@ -274,16 +259,6 @@ QuadPtr TypeConverter<QuadPtr, cc::DrawQuad>::Convert(
   // state list.
   quad->shared_quad_state_index = UINT32_MAX;
   switch (input.material) {
-    case cc::DrawQuad::CHECKERBOARD: {
-      const cc::CheckerboardDrawQuad* checkerboard_quad =
-          cc::CheckerboardDrawQuad::MaterialCast(&input);
-      CheckerboardQuadStatePtr checkerboard_state =
-          CheckerboardQuadState::New();
-      checkerboard_state->color = Color::From(checkerboard_quad->color);
-      checkerboard_state->scale = checkerboard_quad->scale;
-      quad->checkerboard_quad_state = checkerboard_state.Pass();
-      break;
-    }
     case cc::DrawQuad::DEBUG_BORDER: {
       const cc::DebugBorderDrawQuad* debug_border_quad =
           cc::DebugBorderDrawQuad::MaterialCast(&input);