Future proof against things like http://crbug.com/91521

remoting/client/plugin/chromoting_instance.cc

 // Copyright (c) 2011 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 "remoting/client/plugin/chromoting_instance.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/json/json_reader.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/stringprintf.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/task.h"
 #include "base/threading/thread.h"
 #include "base/values.h"
 // TODO(sergeyu): We should not depend on renderer here. Instead P2P
 // Pepper API should be used. Remove this dependency.
 // crbug.com/74951
 #include "content/renderer/p2p/ipc_network_manager.h"
 #include "content/renderer/p2p/ipc_socket_factory.h"
+#include "media/base/media.h"
 #include "ppapi/c/dev/ppb_query_policy_dev.h"
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/cpp/input_event.h"
 #include "ppapi/cpp/rect.h"
 // TODO(wez): Remove this when crbug.com/86353 is complete.
 #include "ppapi/cpp/private/var_private.h"
 #include "remoting/base/task_thread_proxy.h"
 #include "remoting/base/util.h"
 #include "remoting/client/client_config.h"
 #include "remoting/client/chromoting_client.h"
@@ skipping 80 matching lines @@
     base::WaitableEvent done_event(true, false);
     client_->Stop(base::Bind(&base::WaitableEvent::Signal,
                              base::Unretained(&done_event)));
     done_event.Wait();
   }
 
   // Stopping the context shutdown all chromoting threads. This is a requirement
   // before we can call Detach() on |view_proxy_|.
   context_.Stop();
 
-  view_proxy_->Detach();
+  if (view_proxy_.get()) {
+    view_proxy_->Detach();
+  }
 }
 
 bool ChromotingInstance::Init(uint32_t argc,
                               const char* argn[],
                               const char* argv[]) {
   CHECK(!initialized_);
   initialized_ = true;
 
   VLOG(1) << "Started ChromotingInstance::Init";
 
+  // Check to make sure the media library is initialized.
+  // http://crbug.com/91521.
+  if (!media::IsMediaLibraryInitialized()) {
+    LOG(ERROR) << "Media library not initialized.";
+    return false;
+  }
+
   // Start all the threads.
   context_.Start();
 
   SubscribeToNatTraversalPolicy();
 
   // Create the chromoting objects that don't depend on the network connection.
   view_.reset(new PepperView(this, &context_));
   view_proxy_ = new PepperViewProxy(this, view_.get());
   rectangle_decoder_ = new RectangleUpdateDecoder(
       context_.decode_message_loop(), view_proxy_);
@@ skipping 335 matching lines @@
 
   initial_policy_received_ = true;
   enable_client_nat_traversal_ = traversal_policy;
 
   if (delayed_connect_.get()) {
     RunTaskOnPluginThread(delayed_connect_.release());
   }
 }
 
 }  // namespace remoting