Force all experiment enabled checks to use ExperimentalFeatures

third_party/WebKit/Source/core/experiments/Experiments.h

Index: third_party/WebKit/Source/core/experiments/Experiments.h
diff --git a/third_party/WebKit/Source/core/experiments/Experiments.h b/third_party/WebKit/Source/core/experiments/Experiments.h
index 868a6301cf52352c76602cd908c7cee1eeeae6d6..53e659a313fc39332cd7a9095761d856497ce34b 100644
--- a/third_party/WebKit/Source/core/experiments/Experiments.h
+++ b/third_party/WebKit/Source/core/experiments/Experiments.h
@@ -24,14 +24,18 @@ namespace blink {
 // TODO(chasej): Link to documentation, or provide more detail on keys, .etc
 class CORE_EXPORT Experiments {
 public:
-    static bool isApiEnabled(ExecutionContext*, const String& apiName, String& errorMessage);
     // Creates a NotSupportedError exception with a message explaining to
     // external developers why the API is disabled and how to join API
     // experiments.
     static DOMException* createApiDisabledException(const String& apiName);
 
 private:
+    friend class ExperimentalFeatures;
+    friend class ExperimentsTest;
+
     explicit Experiments();
+
+    static bool isApiEnabled(ExecutionContext*, const String& apiName, String* errorMessage);
 };
 
 } // namespace blink