Merge 259353 "Mark drags starting in web content as tainted to a..."

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
===================================================================
--- content/browser/renderer_host/render_view_host_impl.cc	(revision 259999)
+++ content/browser/renderer_host/render_view_host_impl.cc	(working copy)
@@ -833,6 +833,9 @@
   // and can't be interpreted as a capability.
   DropData filtered_data(drop_data);
   GetProcess()->FilterURL(true, &filtered_data.url);
+  if (drop_data.did_originate_from_renderer) {
+    filtered_data.filenames.clear();
+  }
 
   // The filenames vector, on the other hand, does represent a capability to
   // access the given files.