[Andoid] Threaded TestRunner creation and SetUp and TearDown calls.

build/android/pylib/base/new_base_test_runner.py

Index: build/android/pylib/base/new_base_test_runner.py
diff --git a/build/android/pylib/base/new_base_test_runner.py b/build/android/pylib/base/new_base_test_runner.py
index 4e7d3443f6d0f1ef8c9949dbd372c6143adcb559..67a7bda577863b0d8f3c9c5330490abfd870660d 100644
--- a/build/android/pylib/base/new_base_test_runner.py
+++ b/build/android/pylib/base/new_base_test_runner.py
@@ -65,31 +65,23 @@ class BaseTestRunner(object):
                              '%d:%d' % (self.test_server_spawner_port,
                                         self.test_server_port))
 
-  def Run(self, test):
-    """Calls subclass functions to set up test, run it and tear it down.
+  def RunTest(self, test):
+    """Runs a test. Needs to be overridden.
 
     Args:
-      test: A Test to run.
+      test: A test to run.
 
     Returns:
-      Test results returned from RunTest(test).
+      Tuple containing: (test_result.TestResults, tests to rerun or None)
     """
-    self.SetUp()
-    try:
-      return self.RunTest(test)
-    finally:
-      self.TearDown()
+    raise NotImplementedError
 
   def SetUp(self):
-    """Called before tests run."""
+    """Run once before all tests are run."""
     Forwarder.KillDevice(self.adb, self.tool)
 
-  def RunTest(self, test):
-    """Runs the tests. Needs to be overridden."""
-    raise NotImplementedError
-
   def TearDown(self):
-    """Called when tests finish running."""
+    """Run once after all tests are run."""
     self.ShutdownHelperToolsForTestSuite()
 
   def CopyTestData(self, test_data_paths, dest_dir):