Category group support/Renamings.

chrome/test/automation/automation_proxy.cc

Index: chrome/test/automation/automation_proxy.cc
diff --git a/chrome/test/automation/automation_proxy.cc b/chrome/test/automation/automation_proxy.cc
index 8a0ed365d6905cd0d8f777562dfa2cc25d6628cc..37e173c80675d514fbee3ee0a8a9590911805b17 100644
--- a/chrome/test/automation/automation_proxy.cc
+++ b/chrome/test/automation/automation_proxy.cc
@@ -404,9 +404,9 @@ void AutomationProxy::ResetChannel() {
     tracker_->put_channel(NULL);
 }
 
-bool AutomationProxy::BeginTracing(const std::string& categories) {
+bool AutomationProxy::BeginTracing(const std::string& category_patterns) {
   bool result = false;
-  bool send_success = Send(new AutomationMsg_BeginTracing(categories,
+  bool send_success = Send(new AutomationMsg_BeginTracing(category_patterns,
                                                           &result));
   return send_success && result;
 }