[android] Adds constants.GetOutDirectory() and converts test scripts to use it.

build/android/pylib/gtest/test_package_apk.py

Index: build/android/pylib/gtest/test_package_apk.py
diff --git a/build/android/pylib/gtest/test_package_apk.py b/build/android/pylib/gtest/test_package_apk.py
index 81c4cfed92ec9b5ca6710ec5f1ff9a4908609903..5aa473eca4c28106c3e0c1121bd773191c426ea2 100644
--- a/build/android/pylib/gtest/test_package_apk.py
+++ b/build/android/pylib/gtest/test_package_apk.py
@@ -29,15 +29,14 @@ class TestPackageApk(TestPackage):
       suite_name: Name of the test suite (e.g. base_unittests).
     """
     TestPackage.__init__(self, suite_name)
-    product_dir = os.path.join(cmd_helper.OutDirectory.get(),
-        constants.GetBuildType())
     if suite_name == 'content_browsertests':
       self.suite_path = os.path.join(
-          product_dir, 'apks', '%s.apk' % suite_name)
+          constants.GetOutDirectory(), 'apks', '%s.apk' % suite_name)
       self._package_info = constants.PACKAGE_INFO['content_browsertests']
     else:
       self.suite_path = os.path.join(
-          product_dir, '%s_apk' % suite_name, '%s-debug.apk' % suite_name)
+          constants.GetOutDirectory(), '%s_apk' % suite_name,
+          '%s-debug.apk' % suite_name)
       self._package_info = constants.PACKAGE_INFO['gtest']
 
   def _CreateCommandLineFileOnDevice(self, adb, options):