Lower ES3 capable requirement to GL 3.3 with extensions.

gpu/command_buffer/service/gles2_cmd_decoder.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/gles2_cmd_decoder.h"
 
 #include <limits.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
@@ skipping 3073 matching lines @@
 
   // In theory |needs_emulation| needs to be true on Desktop GL 4.1 or lower.
   // However, we set it to true everywhere, not to trust drivers to handle
   // out-of-bounds buffer accesses.
   bool needs_emulation = true;
   transform_feedback_manager_.reset(new TransformFeedbackManager(
       group_->max_transform_feedback_separate_attribs(), needs_emulation));
 
   if (feature_info_->IsWebGL2OrES3Context()) {
     if (!feature_info_->IsES3Capable()) {
-      LOG(ERROR) << "Underlying driver does not support ES3.";
+      LOG(ERROR) << "ES3 is blacklisted/disabled/unsupported by driver.";
       Destroy(true);
       return false;
     }
     feature_info_->EnableES3Validators();
     set_unsafe_es3_apis_enabled(true);
 
     frag_depth_explicitly_enabled_ = true;
     draw_buffers_explicitly_enabled_ = true;
     // TODO(zmo): Look into shader_texture_lod_explicitly_enabled_ situation.
 
@@ skipping 15655 matching lines @@
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "base/macros.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu