Add "panel_fitting" GPU feature type and use it for mirror mode.

content/browser/gpu/gpu_blacklist.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 "content/browser/gpu/gpu_blacklist.h"
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/logging.h"
 #include "base/string_number_conversions.h"
@@ skipping 753 matching lines @@
         gpu_util::StringToGpuFeatureType(blacklisted_features[i]);
     switch (type) {
       case content::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS:
       case content::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING:
       case content::GPU_FEATURE_TYPE_WEBGL:
       case content::GPU_FEATURE_TYPE_MULTISAMPLING:
       case content::GPU_FEATURE_TYPE_FLASH3D:
       case content::GPU_FEATURE_TYPE_FLASH_STAGE3D:
       case content::GPU_FEATURE_TYPE_TEXTURE_SHARING:
       case content::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE:
+      case content::GPU_FEATURE_TYPE_PANEL_FITTING:
       case content::GPU_FEATURE_TYPE_ALL:
         feature_type |= type;
         break;
       case content::GPU_FEATURE_TYPE_UNKNOWN:
         contains_unknown_features_ = true;
         break;
     }
   }
   feature_type_ = static_cast<GpuFeatureType>(feature_type);
   return true;
@@ skipping 371 matching lines @@
   if (op == ">")
     return kGT;
   if (op == ">=")
     return kGE;
   if (op == "any")
     return kAny;
   if (op == "between")
     return kBetween;
   return kUnknown;
 }