cc: Remove unused variables in gl_renderer.h

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 374 matching lines @@
   VideoStreamTextureProgram
       video_stream_texture_program_[NumTexCoordPrecisions];
 
   DebugBorderProgram debug_border_program_;
   SolidColorProgram solid_color_program_;
   SolidColorProgramAA solid_color_program_aa_;
 
   gpu::gles2::GLES2Interface* gl_;
   gpu::ContextSupport* context_support_;
 
-  skia::RefPtr<GrContext> gr_context_;
-  skia::RefPtr<SkCanvas> sk_canvas_;
-
   TextureMailboxDeleter* texture_mailbox_deleter_;
 
   gfx::Rect swap_buffer_rect_;
   gfx::Rect scissor_rect_;
   gfx::Rect viewport_;
   bool is_backbuffer_discarded_;
   bool is_using_bind_uniform_;
   bool is_scissor_enabled_;
   bool scissor_rect_needs_reset_;
   bool stencil_shadow_;
@@ skipping 28 matching lines @@
 #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_