browser-plugin: Allow accepting drag-n-drop events.

content/browser/browser_plugin/browser_plugin_guest_helper.cc

Index: content/browser/browser_plugin/browser_plugin_guest_helper.cc
diff --git a/content/browser/browser_plugin/browser_plugin_guest_helper.cc b/content/browser/browser_plugin/browser_plugin_guest_helper.cc
index 68512ca4b322f160ef99dadfec65639c4a5c3f0f..b1de4d9a2ca9378c4d22eea87bed93ec3c5e2c3d 100644
--- a/content/browser/browser_plugin/browser_plugin_guest_helper.cc
+++ b/content/browser/browser_plugin/browser_plugin_guest_helper.cc
@@ -6,6 +6,7 @@
 
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/web_contents/web_contents_impl.h"
+#include "content/common/drag_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/render_view_host.h"
 
@@ -25,6 +26,7 @@ bool BrowserPluginGuestHelper::OnMessageReceived(
     const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(BrowserPluginGuestHelper, message)
+    IPC_MESSAGE_HANDLER(DragHostMsg_UpdateDragCursor, OnUpdateDragCursor)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateRect, OnUpdateRect)
     IPC_MESSAGE_HANDLER(ViewHostMsg_HandleInputEvent_ACK, OnHandleInputEventAck)
     IPC_MESSAGE_HANDLER(ViewHostMsg_TakeFocus, OnTakeFocus)
@@ -37,6 +39,11 @@ bool BrowserPluginGuestHelper::OnMessageReceived(
   return handled;
 }
 
+void BrowserPluginGuestHelper::OnUpdateDragCursor(
+    WebKit::WebDragOperation current_op) {
+  guest_->UpdateDragCursor(current_op);
+}
+
 void BrowserPluginGuestHelper::OnUpdateRect(
     const ViewHostMsg_UpdateRect_Params& params) {
   guest_->UpdateRect(render_view_host(), params);