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

cc/output/gl_renderer_unittest.cc

 // Copyright 2012 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/output/gl_renderer.h"
 
 #include <set>
 
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 99 matching lines @@
     GLRendererPixelTest::SetUp();
     ASSERT_FALSE(renderer()->IsContextLost());
   }
 
   void TearDown() override {
     GLRendererPixelTest::TearDown();
     ASSERT_FALSE(renderer()->IsContextLost());
   }
 
   void TestBasicShaders() {
-    EXPECT_PROGRAM_VALID(renderer()->GetTileCheckerboardProgram());
     EXPECT_PROGRAM_VALID(renderer()->GetDebugBorderProgram());
     EXPECT_PROGRAM_VALID(renderer()->GetSolidColorProgram());
     EXPECT_PROGRAM_VALID(renderer()->GetSolidColorProgramAA());
   }
 
   void TestShadersWithPrecision(TexCoordPrecision precision) {
     EXPECT_PROGRAM_VALID(renderer()->GetTextureIOSurfaceProgram(precision));
     if (renderer()->Capabilities().using_egl_image)
       EXPECT_PROGRAM_VALID(renderer()->GetVideoStreamTextureProgram(precision));
     else
@@ skipping 877 matching lines @@
     EXPECT_CALL(*context, drawElements(_, _, _, _));
 
     // transformed_tile_quad uses GL_LINEAR.
     EXPECT_CALL(*context, drawElements(_, _, _, _));
 
     // scaled_tile_quad also uses GL_LINEAR.
     EXPECT_CALL(*context, drawElements(_, _, _, _));
 
     // The remaining quads also use GL_LINEAR because nearest neighbor
     // filtering is currently only used with tile quads.
-    EXPECT_CALL(*context, drawElements(_, _, _, _)).Times(7);
+    EXPECT_CALL(*context, drawElements(_, _, _, _)).Times(6);
   }
 
   gfx::Rect viewport_rect(100, 100);
   renderer.DrawFrame(&render_passes_in_draw_order_,
                      1.f,
                      viewport_rect,
                      viewport_rect,
                      false);
   Mock::VerifyAndClearExpectations(context);
 }
@@ skipping 1208 matching lines @@
   EXPECT_CALL(overlay_scheduler,
               Schedule(1, gfx::OVERLAY_TRANSFORM_NONE, _, viewport_rect,
                        BoundingRect(uv_top_left, uv_bottom_right))).Times(1);
 
   renderer.DrawFrame(&render_passes_in_draw_order_, 1.f, viewport_rect,
                      viewport_rect, false);
 }
 
 }  // namespace
 }  // namespace cc