Split tests into individual files. Got rid of globals by converting them to classes.

client/deps/glbench/src/shaders.h

-// Copyright (c) 2010 The Chromium OS 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 BENCH_GL_SHADERS_H_
-#define BENCH_GL_SHADERS_H_
-
-typedef GLuint ShaderProgram;
-
-ShaderProgram InitShaderProgram(const char *vertex_src,
-                                const char *fragment_src);
-void DeleteShaderProgram(ShaderProgram program);
-ShaderProgram AttributeFetchShaderProgram(int attribute_count,
-                                          GLuint vertex_buffers[]);
-ShaderProgram VaryingsShaderProgram(int varyings_count, GLuint vertex_buffer);
-ShaderProgram DdxDdyShaderProgram(bool ddx, GLuint vertex_buffer);
-ShaderProgram YuvToRgbShaderProgram(int type, GLuint vertex_buffer,
-                                    int width, int height);
-ShaderProgram BasicTextureShaderProgram(GLuint vertex_buffer,
-                                        GLuint texture_buffer);
-ShaderProgram DoubleTextureBlendShaderProgram(GLuint vertex_buffer,
-                                              GLuint texture_buffer_0,
-                                              GLuint texture_buffer_1);
-ShaderProgram TripleTextureBlendShaderProgram(GLuint vertex_buffer,
-                                              GLuint texture_buffer_0,
-                                              GLuint texture_buffer_1,
-                                              GLuint texture_buffer_2);
-
-#endif // BENCH_GL_SHADERS_H_