gpu: Add YCbCr 420v extension.

ui/gl/test/gl_test_helper.h

 // Copyright 2015 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 UI_GL_TEST_GL_TEST_HELPER_H_
 #define UI_GL_TEST_GL_TEST_HELPER_H_
 
 #include "base/basictypes.h"
 #include "ui/gl/gl_bindings.h"
 
 namespace gl {
 
 class GLTestHelper {
  public:
   // Creates a texture object.
   // Does not check for errors, always returns texture.
   static GLuint CreateTexture(GLenum target);
 
-  // Compiles a shader.
-  // Does not check for errors, always returns shader.
-  static GLuint CompileShader(GLenum type, const char* src);
-
-  // Compiles a shader and checks for compilation errors.
-  // Returns shader, 0 on failure.
-  static GLuint LoadShader(GLenum type, const char* src);
-
-  // Attaches 2 shaders and links them to a program.
-  // Does not check for errors, always returns program.
-  static GLuint LinkProgram(GLuint vertex_shader, GLuint fragment_shader);
-
-  // Attaches 2 shaders, links them to a program, and checks for errors.
-  // Returns program, 0 on failure.
-  static GLuint SetupProgram(GLuint vertex_shader, GLuint fragment_shader);
-
   // Creates a framebuffer, attaches a color buffer, and checks for errors.
   // Returns framebuffer, 0 on failure.
   static GLuint SetupFramebuffer(int width, int height);
 
   // Checks an area of pixels for a color.
   static bool CheckPixels(GLint x,
                           GLint y,
                           GLsizei width,
                           GLsizei height,
                           const uint8_t expected_color[4]);
 };
 
 }  // namespace gl
 
 #endif  // UI_GL_TEST_GL_TEST_HELPER_H_