Add ES3 commands GetVertexAttribI{u}iv to GPU command buffer.

gpu/command_buffer/client/gles2_trace_implementation_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 284 matching lines @@
 void GetUniformfv(GLuint program, GLint location, GLfloat* params) override;
 void GetUniformiv(GLuint program, GLint location, GLint* params) override;
 void GetUniformuiv(GLuint program, GLint location, GLuint* params) override;
 void GetUniformIndices(GLuint program,
                        GLsizei count,
                        const char* const* names,
                        GLuint* indices) override;
 GLint GetUniformLocation(GLuint program, const char* name) override;
 void GetVertexAttribfv(GLuint index, GLenum pname, GLfloat* params) override;
 void GetVertexAttribiv(GLuint index, GLenum pname, GLint* params) override;
+void GetVertexAttribIiv(GLuint index, GLenum pname, GLint* params) override;
+void GetVertexAttribIuiv(GLuint index, GLenum pname, GLuint* params) override;
 void GetVertexAttribPointerv(GLuint index,
                              GLenum pname,
                              void** pointer) override;
 void Hint(GLenum target, GLenum mode) override;
 void InvalidateFramebuffer(GLenum target,
                            GLsizei count,
                            const GLenum* attachments) override;
 void InvalidateSubFramebuffer(GLenum target,
                               GLsizei count,
                               const GLenum* attachments,
@@ skipping 423 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_TRACE_IMPLEMENTATION_AUTOGEN_H_