[ChromeDriver] Send DOM.getDocument after each DOM.documentUpdated.

chrome/test/chromedriver/navigation_tracker.h

Index: chrome/test/chromedriver/navigation_tracker.h
diff --git a/chrome/test/chromedriver/navigation_tracker.h b/chrome/test/chromedriver/navigation_tracker.h
index 55268b5a63a614dcd04c408b60b42b856400aa88..2e37f793ed73c12b2bd3b95e09635dd788679823 100644
--- a/chrome/test/chromedriver/navigation_tracker.h
+++ b/chrome/test/chromedriver/navigation_tracker.h
@@ -10,18 +10,24 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "chrome/test/chromedriver/devtools_client.h"
 #include "chrome/test/chromedriver/devtools_event_listener.h"
+#include "chrome/test/chromedriver/status.h"
 
 namespace base {
 class DictionaryValue;
 }
 
+class DevToolsClient;
+class Status;
+
 // Tracks the navigation state of frames.
 class NavigationTracker : public DevToolsEventListener {
  public:
   NavigationTracker();
   virtual ~NavigationTracker();
 
+  Status Init(DevToolsClient* client);
   bool IsPendingNavigation(const std::string& frame_id);
 
   // Overridden from DevToolsEventListener: