Add glGetActiveUniformBlockiv to GPU command buffer.

gpu/command_buffer/client/gles2_interface_stub_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 167 matching lines @@
                      GLint* size,
                      GLenum* type,
                      char* name) override;
 void GetActiveUniform(GLuint program,
                       GLuint index,
                       GLsizei bufsize,
                       GLsizei* length,
                       GLint* size,
                       GLenum* type,
                       char* name) override;
+void GetActiveUniformBlockiv(GLuint program,
+                             GLuint index,
+                             GLenum pname,
+                             GLint* params) override;
 void GetActiveUniformBlockName(GLuint program,
                                GLuint index,
                                GLsizei bufsize,
                                GLsizei* length,
                                char* name) override;
 void GetAttachedShaders(GLuint program,
                         GLsizei maxcount,
                         GLsizei* count,
                         GLuint* shaders) override;
 GLint GetAttribLocation(GLuint program, const char* name) override;
@@ skipping 465 matching lines @@
                                   GLint bounds_height,
                                   GLfloat uv_x,
                                   GLfloat uv_y,
                                   GLfloat uv_width,
                                   GLfloat uv_height) override;
 void SwapInterval(GLint interval) override;
 void MatrixLoadfCHROMIUM(GLenum matrixMode, const GLfloat* m) override;
 void MatrixLoadIdentityCHROMIUM(GLenum matrixMode) override;
 void BlendBarrierKHR() override;
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_INTERFACE_STUB_AUTOGEN_H_