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

content/browser/gpu/gpu_util.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_util.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/string_util.h"
 #include "base/sys_info.h"
 #include "base/version.h"
 #include "content/browser/gpu/gpu_blacklist.h"
 #include "content/public/common/content_switches.h"
 
 using content::GpuFeatureType;
 
 namespace {
 
 const char kGpuFeatureNameAccelerated2dCanvas[] = "accelerated_2d_canvas";
 const char kGpuFeatureNameAcceleratedCompositing[] = "accelerated_compositing";
 const char kGpuFeatureNameWebgl[] = "webgl";
 const char kGpuFeatureNameMultisampling[] = "multisampling";
 const char kGpuFeatureNameFlash3d[] = "flash_3d";
 const char kGpuFeatureNameFlashStage3d[] = "flash_stage3d";
 const char kGpuFeatureNameTextureSharing[] = "texture_sharing";
 const char kGpuFeatureNameAcceleratedVideoDecode[] = "accelerated_video_decode";
+const char kGpuFeatureNamePanelFitting[] = "panel_fitting";
 const char kGpuFeatureNameAll[] = "all";
 const char kGpuFeatureNameUnknown[] = "unknown";
 
 enum GpuFeatureStatus {
     kGpuFeatureEnabled = 0,
     kGpuFeatureBlacklisted = 1,
     kGpuFeatureDisabled = 2,  // disabled by user but not blacklisted
     kGpuFeatureNumStatus
 };
 
@@ skipping 55 matching lines @@
   else if (feature_string == kGpuFeatureNameMultisampling)
     return content::GPU_FEATURE_TYPE_MULTISAMPLING;
   else if (feature_string == kGpuFeatureNameFlash3d)
     return content::GPU_FEATURE_TYPE_FLASH3D;
   else if (feature_string == kGpuFeatureNameFlashStage3d)
     return content::GPU_FEATURE_TYPE_FLASH_STAGE3D;
   else if (feature_string == kGpuFeatureNameTextureSharing)
     return content::GPU_FEATURE_TYPE_TEXTURE_SHARING;
   else if (feature_string == kGpuFeatureNameAcceleratedVideoDecode)
     return content::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE;
+  else if (feature_string == kGpuFeatureNamePanelFitting)
+    return content::GPU_FEATURE_TYPE_PANEL_FITTING;
   else if (feature_string == kGpuFeatureNameAll)
     return content::GPU_FEATURE_TYPE_ALL;
   return content::GPU_FEATURE_TYPE_UNKNOWN;
 }
 
 std::string GpuFeatureTypeToString(GpuFeatureType type) {
   std::vector<std::string> matches;
   if (type == content::GPU_FEATURE_TYPE_ALL) {
     matches.push_back(kGpuFeatureNameAll);
   } else {
     if (type & content::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS)
       matches.push_back(kGpuFeatureNameAccelerated2dCanvas);
     if (type & content::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING)
       matches.push_back(kGpuFeatureNameAcceleratedCompositing);
     if (type & content::GPU_FEATURE_TYPE_WEBGL)
       matches.push_back(kGpuFeatureNameWebgl);
     if (type & content::GPU_FEATURE_TYPE_MULTISAMPLING)
       matches.push_back(kGpuFeatureNameMultisampling);
     if (type & content::GPU_FEATURE_TYPE_FLASH3D)
       matches.push_back(kGpuFeatureNameFlash3d);
     if (type & content::GPU_FEATURE_TYPE_FLASH_STAGE3D)
       matches.push_back(kGpuFeatureNameFlashStage3d);
     if (type & content::GPU_FEATURE_TYPE_TEXTURE_SHARING)
       matches.push_back(kGpuFeatureNameTextureSharing);
     if (type & content::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE)
       matches.push_back(kGpuFeatureNameAcceleratedVideoDecode);
+    if (type & content::GPU_FEATURE_TYPE_PANEL_FITTING)
+      matches.push_back(kGpuFeatureNamePanelFitting);

[Zhenyao Mo, 2012/09/18 19:28:55]

Please also update the unit test.

[ynovikov, 2012/09/21 18:48:27]

Done.

     if (!matches.size())
       matches.push_back(kGpuFeatureNameUnknown);
   }
   return JoinString(matches, ',');
 }
 
 void UpdateStats(const GpuBlacklist* blacklist,
                  uint32 blacklisted_features) {
   uint32 max_entry_id = blacklist->max_entry_id();
   if (max_entry_id == 0) {
@@ skipping 74 matching lines @@
         kGpuBlacklistFeatureHistogramNamesWin[i],
         1, kNumWinSubVersions * kGpuFeatureNumStatus,
         kNumWinSubVersions * kGpuFeatureNumStatus + 1,
         base::Histogram::kUmaTargetedHistogramFlag);
     histogram_pointer->Add(GetGpuBlacklistHistogramValueWin(value));
 #endif
   }
 }
 
 }  // namespace gpu_util;