[polymer] Merge of master into polymer10-migration

telemetry/telemetry/internal/backends/chrome/ios_browser_backend.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import contextlib
 import json
 import logging
 import re
 import urllib2
 
@@ skipping 125 matching lines @@
 
   def HasBrowserFinishedLaunching(self):
     logging.warn('Not implemented')
     return False
 
   def GetStandardOutput(self):
     raise NotImplementedError()
 
   def GetStackTrace(self):
     raise NotImplementedError()
+
+  def GetMostRecentMinidumpPath(self):
+    return None
+
+  def GetAllMinidumpPaths(self):
+    return None
+
+  def GetAllUnsymbolizedMinidumpPaths(self):
+    return None
+
+  def SymbolizeMinidump(self, minidump_path):
+    return None