[Android] Implement instrumentation tests in platform mode.

build/android/pylib/base/base_test_result.py

Index: build/android/pylib/base/base_test_result.py
diff --git a/build/android/pylib/base/base_test_result.py b/build/android/pylib/base/base_test_result.py
index f55be02b5f3def5ce1324a8864b6ee8977590582..508b9887948eb2a7ea6ea5abe2690cc3b791addb 100644
--- a/build/android/pylib/base/base_test_result.py
+++ b/build/android/pylib/base/base_test_result.py
@@ -64,6 +64,11 @@ class BaseTestResult(object):
     """Get the test name."""
     return self._name
 
+  def SetType(self, test_type):
+    """Set the test result type."""
+    assert test_type in ResultType.GetTypes()
+    self._test_type = test_type
+
   def GetType(self):
     """Get the test result type."""
     return self._test_type