Add EncodeBackbufferCHROMIUM support to GLES2 command stream

gpu/command_buffer/client/gles2_c_lib_autogen.h

Index: gpu/command_buffer/client/gles2_c_lib_autogen.h
diff --git a/gpu/command_buffer/client/gles2_c_lib_autogen.h b/gpu/command_buffer/client/gles2_c_lib_autogen.h
index 70a7c55b3495d8132b3dff06b69a539e1df0d8be..a2642d453ffb46348d26179f64fac001d9f9f2f4 100644
--- a/gpu/command_buffer/client/gles2_c_lib_autogen.h
+++ b/gpu/command_buffer/client/gles2_c_lib_autogen.h
@@ -731,6 +731,9 @@ void GLES2WaitSyncPointCHROMIUM(GLuint sync_point) {
 void GLES2DrawBuffersEXT(GLsizei count, const GLenum* bufs) {
   gles2::GetGLContext()->DrawBuffersEXT(count, bufs);
 }
+void GLES2EncodeBackbufferCHROMIUM() {
+  gles2::GetGLContext()->EncodeBackbufferCHROMIUM();
+}
 
 namespace gles2 {
 
@@ -1074,6 +1077,8 @@ NameToFunc g_gles2_function_table[] = {
       glWaitSyncPointCHROMIUM), },
   { "glDrawBuffersEXT", reinterpret_cast<GLES2FunctionPointer>(
       glDrawBuffersEXT), },
+  { "glEncodeBackbufferCHROMIUM", reinterpret_cast<GLES2FunctionPointer>(
+      glEncodeBackbufferCHROMIUM), },
   { NULL, NULL, },
 };