command_buffer: Implement path rendering functions for CHROMIUM_path_rendering

gpu/command_buffer/service/context_state_autogen.h

Index: gpu/command_buffer/service/context_state_autogen.h
diff --git a/gpu/command_buffer/service/context_state_autogen.h b/gpu/command_buffer/service/context_state_autogen.h
index fcae244ca8b86659ae36d40b78518d50611ddf1d..d88135b2aaf128c25613f6c159b401b1f1c77dde 100644
--- a/gpu/command_buffer/service/context_state_autogen.h
+++ b/gpu/command_buffer/service/context_state_autogen.h
@@ -70,6 +70,9 @@ 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;