Adds function for activating a tab.

tools/telemetry/telemetry/tab.py

Index: tools/telemetry/telemetry/tab.py
diff --git a/tools/telemetry/telemetry/tab.py b/tools/telemetry/telemetry/tab.py
index 7f3730fa8e8b246947126299582b2d5ca7a986a6..d9b8e751fa6d64f1c523b675c763b4118d0babd7 100644
--- a/tools/telemetry/telemetry/tab.py
+++ b/tools/telemetry/telemetry/tab.py
@@ -49,6 +49,11 @@ class Tab(object):
     self._timeline = inspector_timeline.InspectorTimeline(
         self._inspector_backend, self)
 
+  def Navigate(self, url):

[nduca, 2012/12/21 22:15:23]

Why? This doesn't fit with the design we have.

[Danh Nguyen, 2012/12/26 19:13:04]

Removed.  I'll move these calls into the tests instead.

+    """Navigates to the given url."""
+    self.page.Navigate(url)
+    self.Disconnect()

[nduca, 2012/12/21 22:15:23]

and why disconnect?

[Danh Nguyen, 2012/12/26 19:13:04]

The Disconnect() is the get around so that TabController._UpdateTabList() will
work properly after Page.Navigate() call.  Navigated tab doesn't have
webSocketDebuggerUrl thus breaks TabController._UpdateTabList() and causes
problem (https://code.google.com/p/chromium/issues/detail?id=166243).  The
Disconnect() call gets the webSocketDebuggerUrl back for the navigated tab.

+
   def Disconnect(self):
     """Closes the connection to this tab."""
     self._console = None