Add glTransformFeedbackVaryings to GPU command buffer.

gpu/command_buffer/client/gles2_cmd_helper_autogen.h

 // Copyright 2014 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 auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 1390 matching lines @@
                    uint32_t pixels_shm_id,
                    uint32_t pixels_shm_offset,
                    GLboolean internal) {
   gles2::cmds::TexSubImage3D* c = GetCmdSpace<gles2::cmds::TexSubImage3D>();
   if (c) {
     c->Init(target, level, xoffset, yoffset, zoffset, width, height, depth,
             format, type, pixels_shm_id, pixels_shm_offset, internal);
   }
 }
 
+void TransformFeedbackVaryingsBucket(GLuint program,
+                                     uint32_t varyings_bucket_id,
+                                     GLenum buffermode) {
+  gles2::cmds::TransformFeedbackVaryingsBucket* c =
+      GetCmdSpace<gles2::cmds::TransformFeedbackVaryingsBucket>();
+  if (c) {
+    c->Init(program, varyings_bucket_id, buffermode);
+  }
+}
+
 void Uniform1f(GLint location, GLfloat x) {
   gles2::cmds::Uniform1f* c = GetCmdSpace<gles2::cmds::Uniform1f>();
   if (c) {
     c->Init(location, x);
   }
 }
 
 void Uniform1fvImmediate(GLint location, GLsizei count, const GLfloat* v) {
   const uint32_t size = gles2::cmds::Uniform1fvImmediate::ComputeSize(count);
   gles2::cmds::Uniform1fvImmediate* c =
@@ skipping 1056 matching lines @@
 }
 
 void BlendBarrierKHR() {
   gles2::cmds::BlendBarrierKHR* c = GetCmdSpace<gles2::cmds::BlendBarrierKHR>();
   if (c) {
     c->Init();
   }
 }
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_CMD_HELPER_AUTOGEN_H_