Fix webkitGetEntry for non-native files.

content/public/common/drop_data.h

Index: content/public/common/drop_data.h
diff --git a/content/public/common/drop_data.h b/content/public/common/drop_data.h
index f131b8145588e5c808fb34fe416c338b935d88e7..10bd762b2a9e9c7eb34f5ada4a0fecf6cc1e2a4c 100644
--- a/content/public/common/drop_data.h
+++ b/content/public/common/drop_data.h
@@ -31,6 +31,7 @@ struct CONTENT_EXPORT DropData {
 
     GURL url;
     int64_t size;
+    base::string16 filesystem_id;

[hashimoto, 2016/12/12 05:55:39]

IIUC a filesystem ID is an always ASCII string.
Why does this need to be a string16?

[kinuko, 2016/12/12 08:03:35]

Looks like just using string is fine.  We can use WebString::ascii and
WebString::fromASCII for conversions
(For context: historically we often tended to use string16 for the strings that
are passed to blink because WebString has implicit conversion to/from string16,
but we're considering removing the implicit conversion)

[hirono, 2016/12/13 08:12:12]

Thank you for the explanation. Done!

   };
 
   enum class Kind {