Revert of command_buffer: Enable gl path rendering by default

gpu/command_buffer/service/feature_info.cc

 // Copyright (c) 2012 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.
 
 #include "gpu/command_buffer/service/feature_info.h"
 
 #include <stddef.h>
 
 #include <set>
 #include <vector>
@@ skipping 207 matching lines @@
 
   feature_flags_.is_swiftshader =
       (command_line->GetSwitchValueASCII(switches::kUseGL) == "swiftshader");
 
   feature_flags_.enable_subscribe_uniform =
       command_line->HasSwitch(switches::kEnableSubscribeUniformExtension);
 
   enable_unsafe_es3_apis_switch_ =
       command_line->HasSwitch(switches::kEnableUnsafeES3APIs);
 
+  enable_gl_path_rendering_switch_ =
+      command_line->HasSwitch(switches::kEnableGLPathRendering);
+
   // The shader translator is needed to translate from WebGL-conformant GLES SL
   // to normal GLES SL, enforce WebGL conformance, translate from GLES SL 1.0 to
   // target context GLSL, implement emulation of OpenGL ES features on OpenGL,
   // etc.
   // The flag here is for testing only.
   disable_shader_translator_ =
       command_line->HasSwitch(switches::kDisableGLSLTranslator);
 
   unsafe_es3_apis_enabled_ = false;
 
@@ skipping 933 matching lines @@
       if (blend_equation_advanced_coherent)
         AddExtensionString("GL_KHR_blend_equation_advanced_coherent");
 
       AddExtensionString("GL_KHR_blend_equation_advanced");
       feature_flags_.blend_equation_advanced = true;
       feature_flags_.blend_equation_advanced_coherent =
           blend_equation_advanced_coherent;
     }
   }
 
-  if (!workarounds_.disable_gl_path_rendering &&
+  if (enable_gl_path_rendering_switch_ &&
+      !workarounds_.disable_gl_path_rendering &&
       extensions.Contains("GL_NV_path_rendering")) {
     bool has_dsa = gl_version_info_->IsAtLeastGL(4, 5) ||
                    extensions.Contains("GL_EXT_direct_state_access");
     bool has_piq = gl_version_info_->IsAtLeastGL(4, 3) ||
                    extensions.Contains("GL_ARB_program_interface_query");
     if (gl_version_info_->IsAtLeastGLES(3, 1) ||
         (gl_version_info_->IsAtLeastGL(3, 2) && has_dsa && has_piq)) {
       AddExtensionString("GL_CHROMIUM_path_rendering");
       feature_flags_.chromium_path_rendering = true;
       validators_.g_l_state.AddValue(GL_PATH_MODELVIEW_MATRIX_CHROMIUM);
       validators_.g_l_state.AddValue(GL_PATH_PROJECTION_MATRIX_CHROMIUM);
       validators_.g_l_state.AddValue(GL_PATH_STENCIL_FUNC_CHROMIUM);
       validators_.g_l_state.AddValue(GL_PATH_STENCIL_REF_CHROMIUM);
       validators_.g_l_state.AddValue(GL_PATH_STENCIL_VALUE_MASK_CHROMIUM);
     }
   }
 
-  if (!workarounds_.disable_gl_path_rendering &&
+  if (enable_gl_path_rendering_switch_ &&
+      !workarounds_.disable_gl_path_rendering &&
       extensions.Contains("GL_NV_framebuffer_mixed_samples")) {
     AddExtensionString("GL_CHROMIUM_framebuffer_mixed_samples");
     feature_flags_.chromium_framebuffer_mixed_samples = true;
     validators_.g_l_state.AddValue(GL_COVERAGE_MODULATION_CHROMIUM);
   }
 
   if ((gl_version_info_->is_es3 || gl_version_info_->is_desktop_core_profile ||
        extensions.Contains("GL_EXT_texture_rg") ||
        extensions.Contains("GL_ARB_texture_rg")) &&
       IsGL_REDSupportedOnFBOs()) {
@@ skipping 159 matching lines @@
   if (pos == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu