Null-check GetView before using it in GetFocusedRenderWidgetHost.

content/browser/renderer_host/render_widget_host_view_aura.cc

 // Copyright (c) 2012 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 "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include <set>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 2805 matching lines @@
 }
 
 void RenderWidgetHostViewAura::ForwardKeyboardEvent(
     const NativeWebKeyboardEvent& event) {
   RenderWidgetHostImpl* target_host = host_;
 
   // If there are multiple widgets on the page (such as when there are
   // out-of-process iframes), pick the one that should process this event.
   if (host_->delegate())
     target_host = host_->delegate()->GetFocusedRenderWidgetHost(host_);
+  if (!target_host)
+    return;
 
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
   ui::TextEditKeyBindingsDelegateAuraLinux* keybinding_delegate =
       ui::GetTextEditKeyBindingsDelegate();
   std::vector<ui::TextEditCommandAuraLinux> commands;
   if (!event.skip_in_browser &&
       keybinding_delegate &&
       event.os_event &&
       keybinding_delegate->MatchEvent(*event.os_event, &commands)) {
     // Transform from ui/ types to content/ types.
@@ skipping 152 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewBase, public:
 
 // static
 void RenderWidgetHostViewBase::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content