Run base_unittests_apk.

base/test/test_stub_android.cc

Index: base/test/test_stub_android.cc
diff --git a/base/test/test_stub_android.cc b/base/test/test_stub_android.cc
index 05dc4e8663e3f3a0c902c57e052f9abba6255880..aaf952e232cf5e003baaeedfafe47bfb92594ac9 100644
--- a/base/test/test_stub_android.cc
+++ b/base/test/test_stub_android.cc
@@ -137,10 +137,14 @@ bool PathTestProviderAndroid(int key, FilePath* result) {
       *result = FilePath(kAndroidTestTempDirectory);
       return true;
     }
+#if !defined(ANDROID_APK_TEST_TARGET)
+    // When running as executable we need to use /data/local/tmp as the
+    // cache directory.
     case base::DIR_CACHE: {
       *result = FilePath(kAndroidTestTempDirectory);
       return true;
     }
+#endif  // !defined(ANDROID_APK_TEST_TARGET)
     case base::DIR_ANDROID_APP_DATA: {
       *result = FilePath(kAndroidTestTempDirectory);
       return true;