Add WebDragData to blink::WebView::dragtargetDrop

content/common/drag_messages.h

Index: content/common/drag_messages.h
diff --git a/content/common/drag_messages.h b/content/common/drag_messages.h
index c3e8e7ddfc22bfde6de2eb05cfe8a9f8821f488f..c5189372de9da62769caa25d3d29b57c750c6ba4 100644
--- a/content/common/drag_messages.h
+++ b/content/common/drag_messages.h
@@ -5,6 +5,9 @@
 // IPC messages for drag and drop.
 // Multiply-included message file, hence no include guard.
 
+#include <vector>
+
+#include "base/strings/string16.h"

[dcheng, 2016/05/24 05:51:50]

This include isn't needed anymore.

[hush (inactive), 2016/05/24 20:26:09]

Done. 
And... is there a tool that tells me which includes are not needed?

[dcheng, 2016/05/25 00:07:57]

Sadly there is not.

 #include "content/common/drag_event_source_info.h"
 #include "content/public/common/drop_data.h"
 #include "ipc/ipc_message_macros.h"
@@ -18,7 +21,7 @@
 // Messages sent from the browser to the renderer.
 
 IPC_MESSAGE_ROUTED5(DragMsg_TargetDragEnter,
-                    content::DropData /* drop_data */,
+                    std::vector<content::DropData::MetaData> /* drop_data */,
                     gfx::Point /* client_pt */,
                     gfx::Point /* screen_pt */,
                     blink::WebDragOperationsMask /* ops_allowed */,
@@ -32,7 +35,8 @@ IPC_MESSAGE_ROUTED4(DragMsg_TargetDragOver,
 
 IPC_MESSAGE_ROUTED0(DragMsg_TargetDragLeave)
 
-IPC_MESSAGE_ROUTED3(DragMsg_TargetDrop,
+IPC_MESSAGE_ROUTED4(DragMsg_TargetDrop,
+                    content::DropData /* drop_data */,
                     gfx::Point /* client_pt */,
                     gfx::Point /* screen_pt */,
                     int /* key_modifiers */)