Hooked the trace event argument whitelist up to the background_trace_manager

content/public/browser/background_tracing_manager.h

Index: content/public/browser/background_tracing_manager.h
diff --git a/content/public/browser/background_tracing_manager.h b/content/public/browser/background_tracing_manager.h
index d5e0900f161194badf775087ec0d3bc225de9f24..d6c5cb1eb1428334cb7679b02cce803c7511ab16 100644
--- a/content/public/browser/background_tracing_manager.h
+++ b/content/public/browser/background_tracing_manager.h
@@ -39,8 +39,8 @@ class BackgroundTracingManager {
   //     );
   // }
   //
-  typedef base::Callback<void(const base::RefCountedString*, base::Closure)>
-      ReceiveCallback;
+  typedef base::Callback<void(const scoped_refptr<base::RefCountedString>&,
+                              base::Closure)> ReceiveCallback;
 
   // Set the triggering rules for when to start recording.
   //
@@ -57,9 +57,14 @@ class BackgroundTracingManager {
   // Calls to SetActiveScenario() with a config will fail if tracing is
   // currently on. Use WhenIdle to register a callback to get notified when
   // the manager is idle and a config can be set again.
+  enum DataFiltering {
+    NO_DATA_FILTERING,
+    ANONYMIZE_DATA,
+  };
   virtual bool SetActiveScenario(scoped_ptr<BackgroundTracingConfig> config,
                                  const ReceiveCallback& receive_callback,
-                                 bool requires_anonymized_data) = 0;
+                                 const base::Closure& enabled_callback,
+                                 DataFiltering data_filtering) = 0;
 
   // Notifies the caller when the manager is idle (not recording or uploading),
   // so that a call to SetActiveScenario() is likely to succeed.