exhibit 1: explicit null checks

chrome/browser/ui/views/location_bar/location_bar_view.cc

Index: chrome/browser/ui/views/location_bar/location_bar_view.cc
diff --git a/chrome/browser/ui/views/location_bar/location_bar_view.cc b/chrome/browser/ui/views/location_bar/location_bar_view.cc
index 0bbcb84135bdfc9945bad72d45e52f4858ea13f8..e5ddf7d5c6b624097930e43034f67f08cf8b6a77 100644
--- a/chrome/browser/ui/views/location_bar/location_bar_view.cc
+++ b/chrome/browser/ui/views/location_bar/location_bar_view.cc
@@ -1049,8 +1049,9 @@ void LocationBarView::OnSetFocus() {
 }
 
 SkBitmap LocationBarView::GetFavicon() const {
-  return delegate_->GetTabContents()->favicon_tab_helper()->
-             GetFavicon().AsBitmap();
+  const gfx::Image& icon = delegate_->GetTabContents()->
+      favicon_tab_helper()->GetFavicon();
+  return icon.IsEmpty() ? SkBitmap() : *icon.ToSkBitmap();
 }
 
 string16 LocationBarView::GetTitle() const {
@@ -1277,8 +1278,9 @@ void LocationBarView::WriteDragDataForView(views::View* sender,
 
   TabContents* tab_contents = GetTabContents();
   DCHECK(tab_contents);
+  const gfx::Image& icon = tab_contents->favicon_tab_helper()->GetFavicon();
   gfx::ImageSkia favicon =
-      tab_contents->favicon_tab_helper()->GetFavicon().AsImageSkia();
+      icon.IsEmpty() ? gfx::ImageSkia() : *icon.ToImageSkia();
   button_drag_utils::SetURLAndDragImage(
       tab_contents->web_contents()->GetURL(),
       tab_contents->web_contents()->GetTitle(),