Measure loading time of several tabs.

chrome/browser/automation/automation_provider.cc

Index: chrome/browser/automation/automation_provider.cc
diff --git a/chrome/browser/automation/automation_provider.cc b/chrome/browser/automation/automation_provider.cc
index 21a7614d7454326b57532deea9ef0323921d21f2..0e224f8b2df4afb6229c06c3672f40d32ecb0c90 100644
--- a/chrome/browser/automation/automation_provider.cc
+++ b/chrome/browser/automation/automation_provider.cc
@@ -2077,6 +2077,22 @@ void AutomationProvider::OmniboxAcceptInput(Browser* browser,
   browser->window()->GetLocationBar()->AcceptInput();
 }
 
+// Sample json input: { "command": "GetInitialLoadTimes" }
+// Refer to InitialLoadObserver::GetTimingInformation() for sample output.
+void AutomationProvider::GetInitialLoadTimes(
+    Browser*,
+    DictionaryValue*,
+    IPC::Message* reply_message) {
+  scoped_ptr<DictionaryValue> return_value(
+      initial_load_observer_->GetTimingInformation());
+
+  std::string json_return;
+  base::JSONWriter::Write(return_value.get(), false, &json_return);
+  AutomationMsg_SendJSONRequest::WriteReplyParams(
+      reply_message, json_return, true);
+  Send(reply_message);
+}
+
 // Sample json input: { "command": "GetPluginsInfo" }
 // Refer chrome/test/pyautolib/plugins_info.py for sample json output.
 void AutomationProvider::GetPluginsInfo(Browser* browser,
@@ -2239,6 +2255,8 @@ void AutomationProvider::SendJSONRequest(int handle,
   handler_map["WaitForAllDownloadsToComplete"] =
       &AutomationProvider::WaitForDownloadsToComplete;
 
+  handler_map["GetInitialLoadTimes"] = &AutomationProvider::GetInitialLoadTimes;
+
   if (error_string.empty()) {
     if (handler_map.find(std::string(command)) != handler_map.end()) {
       (this->*handler_map[command])(browser, dict_value, reply_message);