Speculative fix for DelegatedFrameHost destructor crashes

content/browser/renderer_host/render_widget_host_impl.cc

Index: content/browser/renderer_host/render_widget_host_impl.cc
diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index 759d6526d4c410bab7c55a45e972ed62fe351007..2c57a2b78d543dafaff3170cf9d2447cc2ce5d62 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -235,6 +235,8 @@ RenderWidgetHostImpl::RenderWidgetHostImpl(RenderWidgetHostDelegate* delegate,
 }
 
 RenderWidgetHostImpl::~RenderWidgetHostImpl() {
+  if (view_weak_)
+    view_weak_->RenderWidgetHostGone();
   SetView(NULL);
 
   GpuSurfaceTracker::Get()->RemoveSurface(surface_id_);
@@ -310,6 +312,10 @@ RenderWidgetHostImpl* RenderWidgetHostImpl::From(RenderWidgetHost* rwh) {
 }
 
 void RenderWidgetHostImpl::SetView(RenderWidgetHostViewBase* view) {
+  if (view)
+    view_weak_ = view->GetWeakPtr();
+  else
+    view_weak_.reset();
   view_ = view;
 
   GpuSurfaceTracker::Get()->SetSurfaceHandle(
@@ -1219,7 +1225,8 @@ void RenderWidgetHostImpl::RendererExited(base::TerminationStatus status,
     GpuSurfaceTracker::Get()->SetSurfaceHandle(surface_id_,
                                                gfx::GLSurfaceHandle());
     view_->RenderProcessGone(status, exit_code);
-    view_ = NULL;  // The View should be deleted by RenderProcessGone.
+    view_ = NULL; // The View should be deleted by RenderProcessGone.
+    view_weak_.reset();
   }
 
   // Reconstruct the input router to ensure that it has fresh state for a new