command_buffer: Implement path rendering functions for CHROMIUM_path_rendering

gpu/command_buffer/service/context_state_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 56 matching lines @@
 GLboolean depth_mask;
 GLboolean cached_depth_mask;
 GLclampf z_near;
 GLclampf z_far;
 GLenum front_face;
 GLenum hint_generate_mipmap;
 GLenum hint_fragment_shader_derivative;
 GLfloat line_width;
 GLfloat modelview_matrix[16];
 GLfloat projection_matrix[16];
+GLenum stencil_path_func;
+GLint stencil_path_ref;
+GLuint stencil_path_mask;
 GLint pack_alignment;
 GLint unpack_alignment;
 GLfloat polygon_offset_factor;
 GLfloat polygon_offset_units;
 GLclampf sample_coverage_value;
 GLboolean sample_coverage_invert;
 GLint scissor_x;
 GLint scissor_y;
 GLsizei scissor_width;
 GLsizei scissor_height;
@@ skipping 82 matching lines @@
     default:
       NOTREACHED();
       return;
   }
   if (enable)
     glEnable(cap);
   else
     glDisable(cap);
 }
 #endif  // GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_AUTOGEN_H_