Trace category groups and category filter.

chrome/test/pyautolib/pyautolib.i

 // 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.
 //
 // Swig Interface for PyAuto.
 // PyAuto makes the Automation Proxy interface available in Python
 //
 // Running swig as:
 //   swig -python -c++ chrome/test/pyautolib/pyautolib.i
 // would generate pyautolib.py, pyautolib_wrap.cxx
@@ skipping 110 matching lines @@
   void Initialize(const FilePath& browser_dir);
 
   %feature("docstring", "Appends a command-line switch (with associated value "
            "if given) to the list of switches to be passed to the browser "
            "upon launch. Should be called before launching the browser. "
            "For internal use only.")
       AppendBrowserLaunchSwitch;
   void AppendBrowserLaunchSwitch(const char* name);
   void AppendBrowserLaunchSwitch(const char* name, const char* value);
 
-  %feature("docstring", "Begins tracing with the given category string.")
+  %feature("docstring", "Begins tracing with the given tag_patterns string.")
       BeginTracing;
-  bool BeginTracing(const std::string& categories);
+  bool BeginTracing(const std::string& tag_patterns);
 
   %feature("docstring", "Ends tracing and returns the collected events.")
       EndTracing;
   std::string EndTracing();
 
   void UseNamedChannelID(const std::string& named_channel_id);
 
   %feature("docstring",
            "Fires up the browser and opens a window.") SetUp;
   virtual void SetUp();
@@ skipping 106 matching lines @@
   // Initialize a new SSLOptions that will use the specified certificate.
   explicit SSLOptions(ServerCertificate cert);
 };
 
 %{
 typedef net::TestServer::SSLOptions SSLOptions;
 %}
 
 %pointer_class(int, int_ptr);
 %pointer_class(uint32, uint32_ptr);