[Chromecast] Turn CastContentWindow into an abstract interface.

chromecast/browser/android/cast_metrics_helper_android.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chromecast/android/cast_metrics_helper_android.h"
+#include "chromecast/browser/android/cast_metrics_helper_android.h"
 
 #include "chromecast/base/metrics/cast_metrics_helper.h"
 #include "jni/CastMetricsHelper_jni.h"
 
 using base::android::JavaParamRef;
 
 namespace chromecast {
+namespace shell {
 
 // static
 bool CastMetricsHelperAndroid::RegisterJni(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 void LogMediaPlay(JNIEnv* env, const JavaParamRef<jclass>& clazz) {
   metrics::CastMetricsHelper::GetInstance()->LogMediaPlay();
 }
 
 void LogMediaPause(JNIEnv* env, const JavaParamRef<jclass>& clazz) {
   metrics::CastMetricsHelper::GetInstance()->LogMediaPause();
 }
 
+}  // namespace shell
 }  // namespace chromecast