Remove code used by --disable-delegated-renderer on Mac

content/browser/renderer_host/compositing_iosurface_shader_programs_mac.h

-// Copyright (c) 2013 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 CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_SHADER_PROGRAMS_MAC_H_
-#define CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_SHADER_PROGRAMS_MAC_H_
-
-#include <OpenGL/gl.h>
-
-#include "base/basictypes.h"
-#include "base/gtest_prod_util.h"
-
-namespace content {
-
-// Provides caching of the compile-and-link step for shader programs at runtime
-// since, once compiled and linked, the programs can be shared.  Callers invoke
-// one of the UseXXX() methods to glUseProgram() the program and have its
-// uniform variables bound with the given parameters.
-//
-// Note: All public methods must be invoked within the the same GL context!
-class CompositingIOSurfaceShaderPrograms {
- public:
-  CompositingIOSurfaceShaderPrograms();
-  ~CompositingIOSurfaceShaderPrograms();
-
-  // Reset the cache, deleting any references to currently-cached shader
-  // programs.  This must be called within an active OpenGL context just before
-  // destruction.
-  void Reset();
-
-  // Begin using the "blit" program, which is set up to sample the texture at
-  // GL_TEXTURE_0.  Returns false on error.
-  bool UseBlitProgram();
-
-  // Begin using the program that just draws solid white very efficiently.
-  // Returns false on error.
-  bool UseSolidWhiteProgram();
-
-  // Begin using one of the two RGB-to-YV12 color conversion programs, as
-  // specified by |pass_number| 1 or 2.  The programs will sample the texture at
-  // GL_TEXTURE0, and account for scaling in the X direction by |texel_scale_x|.
-  // Returns false on error.
-  bool UseRGBToYV12Program(int pass_number, float texel_scale_x);
-
-  // |format| argument to use for glReadPixels() when reading back textures
-  // generated by the RGBToYV12 program.
-  GLenum rgb_to_yv12_output_format() const {
-    return rgb_to_yv12_output_format_;
-  }
-
- protected:
-  FRIEND_TEST_ALL_PREFIXES(CompositingIOSurfaceTransformerTest,
-                           TransformsRGBToYV12);
-
-  // Side effect: Calls Reset(), deleting any cached programs.
-  void SetOutputFormatForTesting(GLenum format);
-
- private:
-  enum { kNumShaderPrograms = 4 };
-
-  // Helper methods to cache uniform variable locations.
-  GLuint GetShaderProgram(int which);
-  void BindUniformTextureVariable(int which, int texture_unit_offset);
-  void BindUniformTexelScaleXVariable(int which, float texel_scale_x);
-
-  // Cached values for previously-compiled/linked shader programs, and the
-  // locations of their uniform variables.
-  GLuint shader_programs_[kNumShaderPrograms];
-  GLint texture_var_locations_[kNumShaderPrograms];
-  GLint texel_scale_x_var_locations_[kNumShaderPrograms];
-
-  // Byte order of the quads generated by the RGBToYV12 shader program.  Must
-  // always be GL_BGRA (default) or GL_RGBA (workaround case).
-  GLenum rgb_to_yv12_output_format_;
-
-  DISALLOW_COPY_AND_ASSIGN(CompositingIOSurfaceShaderPrograms);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_COMPOSITING_IOSURFACE_SHADER_PROGRAMS_MAC_H_