[android] Make build_type a singleton.

build/android/pylib/gtest/test_package_exe.py

Index: build/android/pylib/gtest/test_package_exe.py
diff --git a/build/android/pylib/gtest/test_package_exe.py b/build/android/pylib/gtest/test_package_exe.py
index f0238b81aa92223d9c33606bb41d733f8442655c..7aa39d8329def4201f0b4d5178e00dffd8bd04f5 100644
--- a/build/android/pylib/gtest/test_package_exe.py
+++ b/build/android/pylib/gtest/test_package_exe.py
@@ -22,14 +22,14 @@ class TestPackageExecutable(TestPackage):
 
   _TEST_RUNNER_RET_VAL_FILE = 'gtest_retval'
 
-  def __init__(self, suite_name, build_type):
+  def __init__(self, suite_name):
     """
     Args:
       suite_name: Name of the test suite (e.g. base_unittests).
-      build_type: 'Release' or 'Debug'.
     """
     TestPackage.__init__(self, suite_name)
-    product_dir = os.path.join(cmd_helper.OutDirectory.get(), build_type)
+    product_dir = os.path.join(cmd_helper.OutDirectory.get(),
+        constants.GetBuildType())
     self.suite_path = os.path.join(product_dir, suite_name)
     self._symbols_dir = os.path.join(product_dir, 'lib.target')