Merge 233505 "Tear down IndexedDB dispatcher before WebKit is to..."

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
===================================================================
--- content/renderer/render_thread_impl.cc	(revision 236350)
+++ content/renderer/render_thread_impl.cc	(working copy)
@@ -447,6 +447,10 @@
     input_event_filter_ = NULL;
   }
 
+  // Ramp down IDB before we ramp down WebKit (and V8), since IDB classes might
+  // hold pointers to V8 objects (e.g., via pending requests).
+  main_thread_indexed_db_dispatcher_.reset();
+
   if (webkit_platform_support_)
     WebKit::shutdown();