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

content/common/browser_plugin_messages.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Multiply-included message header, no traditional include guard.
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/process.h"
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits.h"
 #include "content/public/common/common_param_traits.h"
 #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
 
 // -----------------------------------------------------------------------------
 // These messages are from the embedder to the browser process.
 
 // This message is sent to the browser process to create the browser plugin
 // embedder and helper. It is sent once prior to sending the first
 // BrowserPluginHostMsg_NavigateGuest message.
 IPC_MESSAGE_ROUTED3(BrowserPluginHostMsg_CreateGuest,
                     int /* instance_id */,
@@ skipping 79 matching lines @@
 // When a BrowserPlugin has been removed from the embedder's DOM, it informs
 // the browser process to cleanup the guest.
 IPC_MESSAGE_ROUTED1(BrowserPluginHostMsg_PluginDestroyed,
                     int /* instance_id */)
 
 // Tells the guest it has been shown or hidden.
 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
 
 // A embedder sends this message to the browser when it wants
 // to resize a guest plugin container so that the guest is relaid out
 // according to the new size.
 IPC_SYNC_MESSAGE_ROUTED2_0(BrowserPluginHostMsg_ResizeGuest,
                            int /* instance_id*/,
                            BrowserPluginHostMsg_ResizeGuest_Params)
 
@@ skipping 83 matching lines @@
 IPC_MESSAGE_CONTROL2(BrowserPluginMsg_ShouldAcceptTouchEvents,
                      int /* instance_id */,
                      bool /* accept */)
 
 // The guest has damage it wants to convey to the embedder so that it can
 // update its backing store.
 IPC_MESSAGE_CONTROL3(BrowserPluginMsg_UpdateRect,
                      int /* instance_id */,
                      int /* message_id */,
                      BrowserPluginMsg_UpdateRect_Params)