Presentation API: reject screen availability observing on Android low ram devices.

chrome/browser/media/router/media_sinks_observer.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 "chrome/browser/media/router/media_sinks_observer.h"
 
 #include "base/logging.h"
 #include "chrome/browser/media/router/media_router.h"
 
 namespace media_router {
 
 MediaSinksObserver::MediaSinksObserver(MediaRouter* router,
                                        const MediaSource& source)
     : source_(source), router_(router) {
   DCHECK(router_);
-  router_->RegisterMediaSinksObserver(this);
+  is_active_ = router_->RegisterMediaSinksObserver(this);

[whywhat, 2015/09/29 12:29:22]

Maybe we shouldn't actually do this work in the ctor?
E.g. we could have a static method that returns the initialized instance if
observing is supported and null otherwise?

[mlamouri (slow - plz ping), 2015/09/29 14:44:52]

As discussed, we could have a ::Create() static method but that would not work
well with inheritance.

 }
 
 MediaSinksObserver::~MediaSinksObserver() {
   router_->UnregisterMediaSinksObserver(this);
 }
 
 }  // namespace media_router