Implement easy GPU feature status summary.

chrome/browser/gpu_data_manager.h

Index: chrome/browser/gpu_data_manager.h
diff --git a/chrome/browser/gpu_data_manager.h b/chrome/browser/gpu_data_manager.h
index f131b078d95ee9f05d70703762cfd0552e248886..12449fc5cff256571e91bd3220731528a06f7b1d 100644
--- a/chrome/browser/gpu_data_manager.h
+++ b/chrome/browser/gpu_data_manager.h
@@ -34,9 +34,10 @@ class GpuDataManager {
 
   const GPUInfo& gpu_info() const;
 
-  // Returns blacklisting reasons structure from gpu_blacklist or NULL
-  // if not blacklisted. Caller is responsible for deleting returned value.
-  Value* GetBlacklistingReasons() const;
+  // Returns status of various GPU features. Return type is
+  // GpuBlacklist::GetFeatureStatus, or NULL if blacklist is
+  // uninitialized. Caller is responsible for deleting the returned value.
+  Value* GetFeatureStatus();
 
   std::string GetBlacklistVersion() const;