Plumb the DragOperation through all the layers between the platform DnD code ...

chrome/common/render_messages_internal.h

 // Copyright (c) 2009 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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard.
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 #include <string>
 #include <vector>
@@ skipping 313 matching lines @@
   // Fill a form with data and optionally submit it
   IPC_MESSAGE_ROUTED1(ViewMsg_FormFill,
                       FormData /* form */)
 
   // Fill a password form and prepare field autocomplete for multiple
   // matching logins.
   IPC_MESSAGE_ROUTED1(ViewMsg_FillPasswordForm,
                       webkit_glue::PasswordFormDomManager::FillData)
 
   // D&d drop target messages.
-  IPC_MESSAGE_ROUTED3(ViewMsg_DragTargetDragEnter,
+  IPC_MESSAGE_ROUTED4(ViewMsg_DragTargetDragEnter,
                       WebDropData /* drop_data */,
                       gfx::Point /* client_pt */,
-                      gfx::Point /* screen_pt */)
-  IPC_MESSAGE_ROUTED2(ViewMsg_DragTargetDragOver,
+                      gfx::Point /* screen_pt */,
+                      WebKit::WebDragOperationsMask /* ops_allowed */)
+  IPC_MESSAGE_ROUTED3(ViewMsg_DragTargetDragOver,
                       gfx::Point /* client_pt */,
-                      gfx::Point /* screen_pt */)
+                      gfx::Point /* screen_pt */,
+                      WebKit::WebDragOperationsMask /* ops_allowed */)
   IPC_MESSAGE_ROUTED0(ViewMsg_DragTargetDragLeave)
   IPC_MESSAGE_ROUTED2(ViewMsg_DragTargetDrop,
                       gfx::Point /* client_pt */,
                       gfx::Point /* screen_pt */)
 
   IPC_MESSAGE_ROUTED1(ViewMsg_UploadFile, ViewMsg_UploadFile_Params)
 
   // Notifies the renderer of updates in mouse position of an in-progress
   // drag.  if |ended| is true, then the user has ended the drag operation.
   IPC_MESSAGE_ROUTED4(ViewMsg_DragSourceEndedOrMoved,
                       gfx::Point /* client_pt */,
                       gfx::Point /* screen_pt */,
                       bool /* ended */,
-                      bool /* cancelled */)
+                      WebKit::WebDragOperation /* drag_operation */)
 
   // Notifies the renderer that the system DoDragDrop call has ended.
   IPC_MESSAGE_ROUTED0(ViewMsg_DragSourceSystemDragEnded)
 
   // Used to tell a render view whether it should expose various bindings
   // that allow JS content extended privileges.  See BindingsPolicy for valid
   // flag values.
   IPC_MESSAGE_ROUTED1(ViewMsg_AllowBindings,
                       int /* enabled_bindings_flags */)
 
@@ skipping 732 matching lines @@
                       std::vector<webkit_glue::PasswordForm> /* forms */)
 
   // Notification that a form has been submitted.  The user hit the button.
   IPC_MESSAGE_ROUTED1(ViewHostMsg_AutofillFormSubmitted,
                       webkit_glue::AutofillForm /* form */)
 
   // Used to tell the parent the user started dragging in the content area. The
   // WebDropData struct contains contextual information about the pieces of the
   // page the user dragged. The parent uses this notification to initiate a
   // drag session at the OS level.
-  IPC_MESSAGE_ROUTED1(ViewHostMsg_StartDragging,
-                      WebDropData /* drop_data */)
+  IPC_MESSAGE_ROUTED2(ViewHostMsg_StartDragging,
+                      WebDropData /* drop_data */,
+                      WebKit::WebDragOperationsMask /* ops_allowed */)
 
   // The page wants to update the mouse cursor during a drag & drop operation.
   // |is_drop_target| is true if the mouse is over a valid drop target.
   IPC_MESSAGE_ROUTED1(ViewHostMsg_UpdateDragCursor,
-                      bool /* is_drop_target */)
+                      WebKit::WebDragOperation /* drag_operation */)
 
   // Tells the browser to move the focus to the next (previous if reverse is
   // true) focusable element.
   IPC_MESSAGE_ROUTED1(ViewHostMsg_TakeFocus, bool /* reverse */)
 
   // Notification that the page has an OpenSearch description document
   // associated with it.
   IPC_MESSAGE_ROUTED3(ViewHostMsg_PageHasOSDD,
                       int32 /* page_id */,
                       GURL /* url of OS description document */,
@@ skipping 568 matching lines @@
   IPC_MESSAGE_CONTROL2(ViewHostMsg_DatabaseGetFileAttributes,
                        FilePath /* the name of the file */,
                        int32 /* a unique message ID */)
 
   // Asks the browser process to return the size of a DB file
   IPC_MESSAGE_CONTROL2(ViewHostMsg_DatabaseGetFileSize,
                        FilePath /* the name of the file */,
                        int32 /* a unique message ID */)
 
 IPC_END_MESSAGES(ViewHost)