[Android] Switch to DeviceUtils versions of GetPid, TakeScreenshot, and GetIoStats.

build/android/pylib/monkey/test_runner.py

Index: build/android/pylib/monkey/test_runner.py
diff --git a/build/android/pylib/monkey/test_runner.py b/build/android/pylib/monkey/test_runner.py
index 42b7d41f116df21b353e416cf80fdfcbd7d5f04f..5c6e506425dd20517b07312ac1fdda49a6964065 100644
--- a/build/android/pylib/monkey/test_runner.py
+++ b/build/android/pylib/monkey/test_runner.py
@@ -58,13 +58,13 @@ class TestRunner(base_test_runner.BaseTestRunner):
 
     # Chrome crashes are not always caught by Monkey test runner.
     # Verify Chrome has the same PID before and after the test.
-    before_pids = self.device.old_interface.ExtractPid(self._package)
+    before_pids = self.device.GetPid(self._package)
 
     # Run the test.
     output = ''
     if before_pids:
       output = '\n'.join(self._LaunchMonkeyTest())
-      after_pids = self.device.old_interface.ExtractPid(self._package)
+      after_pids = self.device.GetPid(self._package)
 
     crashed = True
     if not before_pids: