Support swap damage rect using eglSwapBuffersWithDamageKHR

gpu/command_buffer/cmd_buffer_functions.txt

 // 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.
 
 // This file is read by build_gles2_cmd_buffer.py to generate commands.
 
 GL_APICALL void         GL_APIENTRY glActiveTexture (GLenum texture);
 GL_APICALL void         GL_APIENTRY glAttachShader (GLidProgram program, GLidShader shader);
 GL_APICALL void         GL_APIENTRY glBindAttribLocation (GLidProgram program, GLuint index, const char* name);
 GL_APICALL void         GL_APIENTRY glBindBuffer (GLenumBufferTarget target, GLidBindBuffer buffer);
@@ skipping 341 matching lines @@
 // Extension GL_CHROMIUM_screen_space_antialiasing
 GL_APICALL void GL_APIENTRY glApplyScreenSpaceAntialiasingCHROMIUM (void);
 
 // Extension EXT_blend_func_extended
 GL_APICALL void         GL_APIENTRY glBindFragDataLocationIndexedEXT (GLidProgram program, GLuint colorNumber, GLuint index, const char* name);
 GL_APICALL void         GL_APIENTRY glBindFragDataLocationEXT (GLidProgram program, GLuint colorNumber, const char* name);
 GL_APICALL GLint        GL_APIENTRY glGetFragDataIndexEXT (GLidProgram program, const char* name);
 
 // Extension CHROMIUM_stream_texture_matrix
 GL_APICALL void         GL_APIENTRY glUniformMatrix4fvStreamTextureMatrixCHROMIUM (GLintUniformLocation location, GLbooleanFalseOnly transpose, const GLfloat* transform);
+
+GL_APICALL void         GL_APIENTRY glSwapBuffersWithDamageCHROMIUM (GLint x, GLint y, GLint width, GLint height);