gpu: Add UMA statistic for RG texture support.

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 <set>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 1070 matching lines @@
 
     if (enable_texture_float) {
       texture_format_validators_[GL_RED_EXT].AddValue(GL_FLOAT);
       texture_format_validators_[GL_RG_EXT].AddValue(GL_FLOAT);
     }
     if (enable_texture_half_float) {
       texture_format_validators_[GL_RED_EXT].AddValue(GL_HALF_FLOAT_OES);
       texture_format_validators_[GL_RG_EXT].AddValue(GL_HALF_FLOAT_OES);
     }
   }
+  UMA_HISTOGRAM_BOOLEAN("GPU.TextureRG", feature_flags_.ext_texture_rg);
 
 #if !defined(OS_MACOSX)
   if (workarounds_.ignore_egl_sync_failures) {
     gfx::GLFenceEGL::SetIgnoreFailures();
   }
 #endif
 }
 
 bool FeatureInfo::IsES3Capable() const {
   if (gl_version_info_->IsAtLeastGLES(3, 0))
@@ skipping 28 matching lines @@
   if (pos == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu