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

content/common/browser_plugin_messages.h

Index: content/common/browser_plugin_messages.h
diff --git a/content/common/browser_plugin_messages.h b/content/common/browser_plugin_messages.h
index 6bc5154b13372c0566e61d2e4b36ac9d39d54971..d0b7123359382c2a1301ff526d0309d4cc324ac0 100644
--- a/content/common/browser_plugin_messages.h
+++ b/content/common/browser_plugin_messages.h
@@ -14,15 +14,20 @@
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_message_utils.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDragStatus.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDragOperation.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 #include "webkit/glue/webcursor.h"
+#include "webkit/glue/webdropdata.h"
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 
 #define IPC_MESSAGE_START BrowserPluginMsgStart
 
+IPC_ENUM_TRAITS(WebKit::WebDragStatus)
+
 // Browser plugin messages
 
 // -----------------------------------------------------------------------------
@@ -122,6 +127,14 @@ IPC_MESSAGE_ROUTED2(BrowserPluginHostMsg_SetVisibility,
                     int /* instance_id */,
                     bool /* visible */)
 
+// Tells the guest that a drag event happened on the plugin.
+IPC_MESSAGE_ROUTED5(BrowserPluginHostMsg_DragStatusUpdate,
+                    int /* instance_id */,
+                    WebKit::WebDragStatus,

[jam, 2012/10/10 20:14:46]

nit: see the convention in this file of putting the parameter name inside
comments for every parameter

[sadrul, 2012/10/10 20:23:10]

Fixed.

+                    WebDropData,
+                    WebKit::WebDragOperationsMask,
+                    gfx::Point);
+
 // -----------------------------------------------------------------------------
 // These messages are from the guest renderer to the browser process