Reland: Aura: Fix crash on dragging URL into tab strip

chrome/browser/ui/views/tabs/tab_strip.cc

Index: chrome/browser/ui/views/tabs/tab_strip.cc
diff --git a/chrome/browser/ui/views/tabs/tab_strip.cc b/chrome/browser/ui/views/tabs/tab_strip.cc
index ed7099e0429194a0ed11f8bfbded23a3ea088c4f..1739fb866ef3d66115e6826abd0170f95575ad18 100644
--- a/chrome/browser/ui/views/tabs/tab_strip.cc
+++ b/chrome/browser/ui/views/tabs/tab_strip.cc
@@ -2276,7 +2276,8 @@ void TabStrip::SetDropIndex(int tab_data_index, bool drop_before) {
                                         &is_beneath);
 
   if (!drop_info_.get()) {
-    drop_info_.reset(new DropInfo(tab_data_index, drop_before, !is_beneath));
+    drop_info_.reset(
+        new DropInfo(tab_data_index, drop_before, !is_beneath, GetWidget()));
   } else {
     drop_info_->drop_index = tab_data_index;
     drop_info_->drop_before = drop_before;
@@ -2310,7 +2311,10 @@ gfx::ImageSkia* TabStrip::GetDropArrowImage(bool is_down) {
 
 // TabStrip::DropInfo ----------------------------------------------------------
 
-TabStrip::DropInfo::DropInfo(int drop_index, bool drop_before, bool point_down)
+TabStrip::DropInfo::DropInfo(int drop_index,
+                             bool drop_before,
+                             bool point_down,
+                             views::Widget* context)
     : drop_index(drop_index),
       drop_before(drop_before),
       point_down(point_down) {
@@ -2324,6 +2328,7 @@ TabStrip::DropInfo::DropInfo(int drop_index, bool drop_before, bool point_down)
   params.accept_events = false;
   params.can_activate = false;
   params.bounds = gfx::Rect(drop_indicator_width, drop_indicator_height);
+  params.context = context->GetNativeView();
   arrow_window->Init(params);
   arrow_window->SetContentsView(arrow_view);
 }