Speculative fix for DelegatedFrameHost destructor crashes

content/browser/renderer_host/render_widget_host_view_base.cc

Index: content/browser/renderer_host/render_widget_host_view_base.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_base.cc b/content/browser/renderer_host/render_widget_host_view_base.cc
index 060adffc6a4b8b98db345c998842a2ff0a8902c9..51fd0232a0da7d4445914f5f196042b02e0613fc 100644
--- a/content/browser/renderer_host/render_widget_host_view_base.cc
+++ b/content/browser/renderer_host/render_widget_host_view_base.cc
@@ -374,7 +374,8 @@ RenderWidgetHostViewBase::RenderWidgetHostViewBase()
       current_device_scale_factor_(0),
       current_display_rotation_(gfx::Display::ROTATE_0),
       pinch_zoom_enabled_(content::IsPinchToZoomEnabled()),
-      renderer_frame_number_(0) {
+      renderer_frame_number_(0),
+      weak_factory_(this) {
 }
 
 RenderWidgetHostViewBase::~RenderWidgetHostViewBase() {
@@ -535,6 +536,10 @@ bool RenderWidgetHostViewBase::HasDisplayPropertyChanged(gfx::NativeView view) {
   return true;
 }
 
+base::WeakPtr<RenderWidgetHostViewBase> RenderWidgetHostViewBase::GetWeakPtr() {
+  return weak_factory_.GetWeakPtr();
+}
+
 scoped_ptr<SyntheticGestureTarget>
 RenderWidgetHostViewBase::CreateSyntheticGestureTarget() {
   RenderWidgetHostImpl* host =