Pass a Feature* to IsAnyFeatureAvailableToContext instead of a string name.

chrome/renderer/extensions/chrome_v8_context.h

Index: chrome/renderer/extensions/chrome_v8_context.h
diff --git a/chrome/renderer/extensions/chrome_v8_context.h b/chrome/renderer/extensions/chrome_v8_context.h
index 94944f47a687911d4902031b7c2501ce68fd64ef..dcdcc901218137010ab090b4d94693899eccbc29 100644
--- a/chrome/renderer/extensions/chrome_v8_context.h
+++ b/chrome/renderer/extensions/chrome_v8_context.h
@@ -105,10 +105,10 @@ class ChromeV8Context : public RequestSender::Source {
   // Returns the availability of the API |api_name|.
   Feature::Availability GetAvailability(const std::string& api_name);
 
-  // Returns whether the API |api_name| or any part of the API could be
+  // Returns whether the API |api| or any part of the API could be
   // available in this context without taking into account the context's
   // extension.
-  bool IsAnyFeatureAvailableToContext(const std::string& api_name);
+  bool IsAnyFeatureAvailableToContext(const extensions::Feature& api);
 
   // Returns a string description of the type of context this is.
   std::string GetContextTypeDescription();