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 53a76de75a1f9ff9df35e4475f096b6acd61f90e..80b19afc2810e40a4fb5e166931bb09bed3bfcc1 100644
--- a/content/public/common/drop_data.h
+++ b/content/public/common/drop_data.h
@@ -21,6 +21,10 @@
 #include "ui/base/dragdrop/file_info.h"
 #include "url/gurl.h"
 
+#if DCHECK_IS_ON()
+#include "ipc/ipc_message.h"
+#endif  // DCHECK_IS_ON()
+
 namespace content {
 
 struct CONTENT_EXPORT DropData {
@@ -32,10 +36,36 @@ struct CONTENT_EXPORT DropData {
     int64_t size;
   };
 
+  enum class Kind {
+    STRING = 0,
+    FILENAME,
+    FILESYSTEMFILE,
+    LAST = FILESYSTEMFILE
+  };
+
+  struct Metadata {
+    Metadata();
+    static Metadata createForMimeType(const DropData::Kind& kind,

[dcheng, 2016/05/25 03:25:37]

Nit: these should be capitalized. Also, DropData:: here should be unnecessary.

[hush (inactive), 2016/05/25 17:17:15]

Done.

+                                      const base::string16& mime_type);
+    static Metadata createForFilePath(const base::FilePath& filename);
+    static Metadata createForFileSystemUrl(const GURL& file_system_url);
+    Metadata(const Metadata& other);
+    ~Metadata();
+
+    DropData::Kind kind;
+    base::string16 mime_type;
+    base::FilePath filename;
+    GURL file_system_url;
+  };
+
   DropData();
   DropData(const DropData& other);
   ~DropData();
 
+#if DCHECK_IS_ON()
+  int view_id = MSG_ROUTING_NONE;
+#endif  // DCHECK_IS_ON()
+
   // Whether this drag originated from a renderer.
   bool did_originate_from_renderer;
 
@@ -54,6 +84,8 @@ struct CONTENT_EXPORT DropData {
   // populated if the drag is not renderer tainted, as this allows File access
   // from web content.
   std::vector<ui::FileInfo> filenames;
+  // The mime types of dragged files.
+  std::vector<base::string16> file_mime_types;
 
   // Isolated filesystem ID for the files being dragged on the webview.
   base::string16 filesystem_id;