Add WebDragData to blink::WebView::dragtargetDrop

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 fce6db13774f772181d135a12c452ff553f58699..e856d1a398da8713245d06b5235110dd9ad373c7 100644
--- a/content/public/common/drop_data.h
+++ b/content/public/common/drop_data.h
@@ -13,6 +13,7 @@
 
 #include <map>
 #include <string>
+#include <utility>
 #include <vector>
 
 #include "base/strings/nullable_string16.h"
@@ -23,6 +24,15 @@
 
 namespace content {
 
+enum DropDataKind {
+  STRING_KIND = 0,
+  FILENAME_KIND,
+  FILESYSTEMFILE_KIND,
+  DROP_DATA_KIND_LAST = FILESYSTEMFILE_KIND
+};
+
+typedef std::pair<base::string16, DropDataKind> MimeTypeKindPair;
+
 struct CONTENT_EXPORT DropData {
   struct FileSystemFileInfo {
     FileSystemFileInfo() : size(0) {}