gpu: check GL_RGB565 work in ES3 context

gpu/command_buffer/service/test_helper.h

 // Copyright (c) 2012 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 GPU_COMMAND_BUFFER_SERVICE_TEST_HELPER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_TEST_HELPER_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 151 matching lines @@
       AttribInfo* attribs,
       size_t num_attribs,
       UniformInfo* uniforms,
       size_t num_uniforms,
       VaryingInfo* varyings,
       size_t num_varyings,
       ProgramOutputInfo* program_outputs,
       size_t num_program_outputs,
       GLuint service_id);
 
+  static void SetupFetureInfoEnableES3ValidatorsExpectations(
+      ::gl::MockGLInterface* gl);
+
   static void DoBufferData(::gl::MockGLInterface* gl,
                            MockErrorState* error_state,
                            BufferManager* manager,
                            Buffer* buffer,
                            GLenum target,
                            GLsizeiptr size,
                            GLenum usage,
                            const GLvoid* data,
                            GLenum error);
 
@@ skipping 47 matching lines @@
                                                   bool use_default_textures);
 
   static std::vector<std::string> split_extensions_;
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_TEST_HELPER_H_