cc: Remove GLC macro

cc/output/gl_renderer.h

 // Copyright 2010 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.
 
 #ifndef CC_OUTPUT_GL_RENDERER_H_
 #define CC_OUTPUT_GL_RENDERER_H_
 
 #include "base/cancelable_callback.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/scoped_ptr_deque.h"
@@ skipping 50 matching lines @@
   const RendererCapabilitiesImpl& Capabilities() const override;
 
   // Waits for rendering to finish.
   void Finish() override;
 
   void DoNoOp() override;
   void SwapBuffers(const CompositorFrameMetadata& metadata) override;
 
   virtual bool IsContextLost();
 
-  static void DebugGLCall(gpu::gles2::GLES2Interface* gl,
-                          const char* command,
-                          const char* file,
-                          int line);
-
  protected:
   GLRenderer(RendererClient* client,
              const RendererSettings* settings,
              OutputSurface* output_surface,
              ResourceProvider* resource_provider,
              TextureMailboxDeleter* texture_mailbox_deleter,
              int highp_threshold_min);
 
   void DidChangeVisibility() override;
 
@@ skipping 424 matching lines @@
   bool use_sync_query_;
   bool use_blend_equation_advanced_;
   bool use_blend_equation_advanced_coherent_;
 
   SkBitmap on_demand_tile_raster_bitmap_;
   ResourceProvider::ResourceId on_demand_tile_raster_resource_id_;
   BoundGeometry bound_geometry_;
   DISALLOW_COPY_AND_ASSIGN(GLRenderer);
 };
 
-// Setting DEBUG_GL_CALLS to 1 will call glGetError() after almost every GL
-// call made by the compositor. Useful for debugging rendering issues but
-// will significantly degrade performance.
-#define DEBUG_GL_CALLS 0
-
-#if DEBUG_GL_CALLS && !defined(NDEBUG)
-#define GLC(context, x)                                                        \
-  (x, GLRenderer::DebugGLCall(&* context, #x, __FILE__, __LINE__))
-#else
-#define GLC(context, x) (x)
-#endif
-
 }  // namespace cc
 
 #endif  // CC_OUTPUT_GL_RENDERER_H_