Update from https://crrev.com/316786

ui/gl/gl_bindings_autogen_gl.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
 // ui/gl/generate_bindings.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 463 matching lines @@
                                                        GLenum pname,
                                                        GLfloat* params);
 typedef void(GL_BINDING_CALL* glGetTexParameterivProc)(GLenum target,
                                                        GLenum pname,
                                                        GLint* params);
 typedef void(GL_BINDING_CALL* glGetTransformFeedbackVaryingProc)(
     GLuint program,
     GLuint index,
     GLsizei bufSize,
     GLsizei* length,
+    GLsizei* size,
     GLenum* type,
     char* name);
 typedef void(GL_BINDING_CALL* glGetTranslatedShaderSourceANGLEProc)(
     GLuint shader,
     GLsizei bufsize,
     GLsizei* length,
     char* source);
 typedef GLuint(GL_BINDING_CALL* glGetUniformBlockIndexProc)(
     GLuint program,
     const char* uniformBlockName);
@@ skipping 1143 matching lines @@
   virtual void glGetTexParameterfvFn(GLenum target,
                                      GLenum pname,
                                      GLfloat* params) = 0;
   virtual void glGetTexParameterivFn(GLenum target,
                                      GLenum pname,
                                      GLint* params) = 0;
   virtual void glGetTransformFeedbackVaryingFn(GLuint program,
                                                GLuint index,
                                                GLsizei bufSize,
                                                GLsizei* length,
+                                               GLsizei* size,
                                                GLenum* type,
                                                char* name) = 0;
   virtual void glGetTranslatedShaderSourceANGLEFn(GLuint shader,
                                                   GLsizei bufsize,
                                                   GLsizei* length,
                                                   char* source) = 0;
   virtual GLuint glGetUniformBlockIndexFn(GLuint program,
                                           const char* uniformBlockName) = 0;
   virtual void glGetUniformfvFn(GLuint program,
                                 GLint location,
@@ skipping 706 matching lines @@
 #define glVertexAttribI4ui ::gfx::g_current_gl_context->glVertexAttribI4uiFn
 #define glVertexAttribI4uiv ::gfx::g_current_gl_context->glVertexAttribI4uivFn
 #define glVertexAttribIPointer \
   ::gfx::g_current_gl_context->glVertexAttribIPointerFn
 #define glVertexAttribPointer \
   ::gfx::g_current_gl_context->glVertexAttribPointerFn
 #define glViewport ::gfx::g_current_gl_context->glViewportFn
 #define glWaitSync ::gfx::g_current_gl_context->glWaitSyncFn
 
 #endif  //  UI_GFX_GL_GL_BINDINGS_AUTOGEN_GL_H_