Add google3 style logging to libbase.

ART already had a flavor of this, but it was specialized for their use
case a bit.

Note that the logging.* tests are currently disabled for the device
because there is no good way to capture the output of liblog. We can
make something that will execute logcat and then then scan the output,
but that's messy. Since we know it at least works on the host, we can
add better device tests later.

Change-Id: I47acd87a3312c0a5285b03f9c8dadef0c669f06a
diff --git a/base/test_main.cpp b/base/test_main.cpp
new file mode 100644
index 0000000..c49ca4b
--- /dev/null
+++ b/base/test_main.cpp
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include "base/logging.h"
+
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  android::base::InitLogging(argv);
+  return RUN_ALL_TESTS();
+}