Revert 193811 "Move browser and url to WebContents from Tab."

trunk/src/tools/telemetry/telemetry/core/tab.py

Index: trunk/src/tools/telemetry/telemetry/core/tab.py
===================================================================
--- trunk/src/tools/telemetry/telemetry/core/tab.py	(revision 194729)
+++ trunk/src/tools/telemetry/telemetry/core/tab.py	(working copy)
@@ -23,6 +23,15 @@
     super(Tab, self).__del__()
 
   @property
+  def browser(self):
+    """The browser in which this tab resides."""
+    return self._inspector_backend.browser
+
+  @property
+  def url(self):
+    return self._inspector_backend.url
+
+  @property
   def dom_stats(self):
     """A dictionary populated with measured DOM statistics.