Clear Browsing Data hook added and some small tests.

chrome/browser/automation/automation_provider_observers.cc

Index: chrome/browser/automation/automation_provider_observers.cc
diff --git a/chrome/browser/automation/automation_provider_observers.cc b/chrome/browser/automation/automation_provider_observers.cc
index 0b7f0afc817e3ea0686b763d784bc4e880f60061..a8c441d8482f872cf5f6ed4a360f167725dee605 100644
--- a/chrome/browser/automation/automation_provider_observers.cc
+++ b/chrome/browser/automation/automation_provider_observers.cc
@@ -1012,6 +1012,14 @@ void AutomationProviderHistoryObserver::HistoryQueryComplete(
   delete this;
 }
 
+void AutomationProviderBrowsingDataObserver::OnBrowsingDataRemoverDone() {
+  // Send back an empty success message
+  AutomationMsg_SendJSONRequest::WriteReplyParams(
+      reply_message_, std::string("{}"), true);
+  provider_->Send(reply_message_);
+  delete this;
+}
+
 OmniboxAcceptNotificationObserver::OmniboxAcceptNotificationObserver(
     NavigationController* controller,
     AutomationProvider* automation,