Refactor Broadcast Radio 1.1 VTS test.

Also apply some minor fixes and log tweaks to the default implementation.

Bug: b/36864490
Test: VTS
Change-Id: I16558d71c6cdee71854ecae9106b8a1c78032439
diff --git a/broadcastradio/1.1/vts/functional/call-barrier.cpp b/broadcastradio/1.1/vts/functional/call-barrier.cpp
new file mode 100644
index 0000000..fede297
--- /dev/null
+++ b/broadcastradio/1.1/vts/functional/call-barrier.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2017 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 "call-barrier.h"
+
+namespace android {
+namespace hardware {
+namespace broadcastradio {
+namespace vts {
+
+using std::lock_guard;
+using std::mutex;
+using std::unique_lock;
+
+void CallBarrier::call() {
+    lock_guard<mutex> lk(mMut);
+    mWasCalled = true;
+    mCond.notify_all();
+}
+
+bool CallBarrier::waitForCall(std::chrono::milliseconds timeout) {
+    unique_lock<mutex> lk(mMut);
+
+    if (mWasCalled) return true;
+
+    auto status = mCond.wait_for(lk, timeout);
+    return status == std::cv_status::no_timeout;
+}
+
+}  // namespace vts
+}  // namespace broadcastradio
+}  // namespace hardware
+}  // namespace android