Move guest view container message routing out of content/.

components/guest_view/renderer/guest_view_container_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 "components/guest_view/renderer/guest_view_container_observer.h"
+
+#include "components/guest_view/renderer/guest_view_container.h"
+#include "ipc/ipc_message_macros.h"
+
+namespace guest_view {
+
+GuestViewContainerObserver::GuestViewContainerObserver() {

[Fady Samuel, 2015/06/01 11:32:25]

The name of this class doesn't match what it's doing. This class filters and
forwards messages to the appropriate guest_view_container.

[lazyboy, 2015/06/01 16:00:07]

Done.

+}
+
+GuestViewContainerObserver::~GuestViewContainerObserver() {
+}
+
+bool GuestViewContainerObserver::OnControlMessageReceived(
+    const IPC::Message& message) {
+  if (!HandlesMessage(message))
+    return false;
+
+  int element_instance_id = -1;

[Fady Samuel, 2015/06/01 11:32:25]

nit: kInstanceIDNone;

[lazyboy, 2015/06/01 16:00:07]

Done.

+  PickleIterator iter(message);
+  bool success = iter.ReadInt(&element_instance_id);
+  DCHECK(success);
+
+  auto* container = GuestViewContainer::FromID(element_instance_id);
+  DCHECK(container);
+  return container->OnMessage(message);
+}
+
+}  // namespace guest_view