Trace category groups and category filter.

chrome/browser/automation/automation_provider.h

 // 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.
 
 // This implements a browser-side endpoint for UI automation activity.
 // The client-side endpoint is implemented by AutomationProxy.
 // The entire lifetime of this object should be contained within that of
 // the BrowserProcess, and in particular the NotificationService that's
 // hung off of it.
 
@@ skipping 238 matching lines @@
 
   // See browsing_data_remover.h for explanation of bitmap fields.
   void RemoveBrowsingData(int remove_mask);
 
   // Notify the JavaScript engine in the render to change its parameters
   // while performing stress testing. See
   // |ViewHostMsg_JavaScriptStressTestControl_Commands| in render_messages.h
   // for information on the arguments.
   void JavaScriptStressTestControl(int handle, int cmd, int param);
 
-  void BeginTracing(const std::string& categories, bool* success);
+  void BeginTracing(const std::string& tag_patterns, bool* success);
   void EndTracing(IPC::Message* reply_message);
   void GetTracingOutput(std::string* chunk, bool* success);
 
   // Asynchronous request for printing the current tab.
   void PrintAsync(int tab_handle);
 
   // Uses the specified encoding to override the encoding of the page in the
   // specified tab.
   void OverrideEncoding(int tab_handle,
                         const std::string& encoding_name,
@@ skipping 91 matching lines @@
   std::string channel_id_;
 
   // Trace data that has been collected but not flushed to the automation
   // client.
   TracingData tracing_data_;
 
   DISALLOW_COPY_AND_ASSIGN(AutomationProvider);
 };
 
 #endif  // CHROME_BROWSER_AUTOMATION_AUTOMATION_PROVIDER_H_