[telemetry] Add webdriver_ie_backend.

tools/telemetry/telemetry/core/backends/webdriver/webdriver_ie_backend.py

Index: tools/telemetry/telemetry/core/backends/webdriver/webdriver_ie_backend.py
diff --git a/tools/telemetry/telemetry/core/backends/webdriver/webdriver_ie_backend.py b/tools/telemetry/telemetry/core/backends/webdriver/webdriver_ie_backend.py
new file mode 100644
index 0000000000000000000000000000000000000000..f744dcae4c77def04c6c517fe578390fb4fcf283
--- /dev/null
+++ b/tools/telemetry/telemetry/core/backends/webdriver/webdriver_ie_backend.py
@@ -0,0 +1,43 @@
+# Copyright 2013 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 re
+import urllib2
+
+from telemetry.core.backends.webdriver import webdriver_browser_backend
+
+class WebDriverIEBackend(webdriver_browser_backend.WebDriverBrowserBackend):
+  # For unsupported functions. pylint: disable=W0223
+
+  def __init__(self, platform_backend, driver_creator, options):
+    super(WebDriverIEBackend, self).__init__(
+        driver_creator=driver_creator,
+        supports_extensions=False,
+        options=options)
+    self._platform_backend = platform_backend
+
+  def GetProcessName(self, cmd_line):
+    if re.search('SCODEF:\d+ CREDAT:\d+', cmd_line, re.IGNORECASE):
+      return 'Content'
+    else:
+      return 'Manager'
+
+  @property
+  def pid(self):
+    for pi in self._platform_backend.GetSystemProcessInfo():
+      if (pi['ParentProcessId'] == self.driver.iedriver.process.pid and
+          pi['Name'].lower() == 'iexplore.exe'):
+        return pi['ProcessId']
+    return None
+
+  def Close(self):
+    try:
+      super(WebDriverIEBackend, self).Close()
+    except urllib2.URLError:
+      # CTRL + C makes IEDriverServer exits while leaving IE still running.
+      for pi in self._platform_backend.GetSystemProcessInfo():
+        if (pi['ParentProcessId'] == self.driver.iedriver.process.pid):
+          self._platform_backend.KillProcess(pi['ProcessId'], True)
+
+  def IsBrowserRunning(self):
+    return self.pid is not None