Added window manager graphics performance tests to gl_Bench.

client/deps/glbench/src/shaders.h

Index: client/deps/glbench/src/shaders.h
diff --git a/client/deps/glbench/src/shaders.h b/client/deps/glbench/src/shaders.h
index af4f3eb7b9d26e43584d31ff064f28d0992edaf6..8258d4ea2cf288f5d48b847799856c25094f6c8e 100644
--- a/client/deps/glbench/src/shaders.h
+++ b/client/deps/glbench/src/shaders.h
@@ -16,5 +16,14 @@ 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_