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

cc/test/render_pass_test_common.cc

Index: cc/test/render_pass_test_common.cc
diff --git a/cc/test/render_pass_test_common.cc b/cc/test/render_pass_test_common.cc
index 6fda53660c036793c8f810413cb4bf2e3ff87ace..61d4a06d0889e2b4474304b3a5f7267f3062837c 100644
--- a/cc/test/render_pass_test_common.cc
+++ b/cc/test/render_pass_test_common.cc
@@ -5,7 +5,6 @@
 #include "cc/test/render_pass_test_common.h"
 
 #include "base/bind.h"
-#include "cc/quads/checkerboard_draw_quad.h"
 #include "cc/quads/debug_border_draw_quad.h"
 #include "cc/quads/io_surface_draw_quad.h"
 #include "cc/quads/render_pass_draw_quad.h"
@@ -91,10 +90,6 @@ void TestRenderPass::AppendOneOfEveryQuadType(
                        SkXfermode::kSrcOver_Mode,
                        0);
 
-  CheckerboardDrawQuad* checkerboard_quad =
-      this->CreateAndAppendDrawQuad<CheckerboardDrawQuad>();
-  checkerboard_quad->SetNew(shared_state, rect, visible_rect, SK_ColorRED, 1.f);
-
   DebugBorderDrawQuad* debug_border_quad =
       this->CreateAndAppendDrawQuad<DebugBorderDrawQuad>();
   debug_border_quad->SetNew(shared_state, rect, visible_rect, SK_ColorRED, 1);