Add initial support for NV_path_rendering extension to gpu command buffer

gpu/command_buffer/service/context_state_impl_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 35 matching lines @@
   color_mask_alpha = true;
   cull_mode = GL_BACK;
   depth_func = GL_LESS;
   depth_mask = true;
   z_near = 0.0f;
   z_far = 1.0f;
   front_face = GL_CCW;
   hint_generate_mipmap = GL_DONT_CARE;
   hint_fragment_shader_derivative = GL_DONT_CARE;
   line_width = 1.0f;
+  matrix_mode = GL_MODELVIEW;
   pack_alignment = 4;
   unpack_alignment = 4;
   polygon_offset_factor = 0.0f;
   polygon_offset_units = 0.0f;
   sample_coverage_value = 1.0f;
   sample_coverage_invert = false;
   scissor_x = 0;
   scissor_y = 0;
   scissor_width = 1;
   scissor_height = 1;
@@ skipping 45 matching lines @@
   glCullFace(cull_mode);
   glDepthFunc(depth_func);
   glDepthMask(depth_mask);
   glDepthRange(z_near, z_far);
   glFrontFace(front_face);
   glHint(GL_GENERATE_MIPMAP_HINT, hint_generate_mipmap);
   if (feature_info_->feature_flags().oes_standard_derivatives)
     glHint(GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES,
            hint_fragment_shader_derivative);
   glLineWidth(line_width);
+  if (feature_info_->feature_flags().nv_path_rendering)
+    glMatrixMode(matrix_mode);
   glPixelStorei(GL_PACK_ALIGNMENT, pack_alignment);
   glPixelStorei(GL_UNPACK_ALIGNMENT, unpack_alignment);
   glPolygonOffset(polygon_offset_factor, polygon_offset_units);
   glSampleCoverage(sample_coverage_value, sample_coverage_invert);
   glScissor(scissor_x, scissor_y, scissor_width, scissor_height);
   glStencilFuncSeparate(
       GL_FRONT, stencil_front_func, stencil_front_ref, stencil_front_mask);
   glStencilFuncSeparate(
       GL_BACK, stencil_back_func, stencil_back_ref, stencil_back_mask);
   glStencilMaskSeparate(GL_FRONT, stencil_front_writemask);
@@ skipping 155 matching lines @@
       if (params) {
         params[0] = static_cast<GLint>(hint_fragment_shader_derivative);
       }
       return true;
     case GL_LINE_WIDTH:
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLint>(line_width);
       }
       return true;
+    case GL_MATRIX_MODE:
+      *num_written = 1;
+      if (params) {
+        params[0] = static_cast<GLint>(matrix_mode);
+      }
+      return true;
     case GL_PACK_ALIGNMENT:
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLint>(pack_alignment);
       }
       return true;
     case GL_UNPACK_ALIGNMENT:
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLint>(unpack_alignment);
@@ skipping 305 matching lines @@
       if (params) {
         params[0] = static_cast<GLfloat>(hint_fragment_shader_derivative);
       }
       return true;
     case GL_LINE_WIDTH:
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLfloat>(line_width);
       }
       return true;
+    case GL_MATRIX_MODE:
+      *num_written = 1;
+      if (params) {
+        params[0] = static_cast<GLfloat>(matrix_mode);
+      }
+      return true;
     case GL_PACK_ALIGNMENT:
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLfloat>(pack_alignment);
       }
       return true;
     case GL_UNPACK_ALIGNMENT:
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLfloat>(unpack_alignment);
@@ skipping 177 matching lines @@
       *num_written = 1;
       if (params) {
         params[0] = static_cast<GLfloat>(enable_flags.stencil_test);
       }
       return true;
     default:
       return false;
   }
 }
 #endif  // GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_IMPL_AUTOGEN_H_