Split Mac WebDropTarget into two, content and chrome.

chrome/browser/tab_contents/tab_contents_view_mac.mm

 // Copyright (c) 2011 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.
 
 #import <Carbon/Carbon.h>
 
 #include "chrome/browser/tab_contents/tab_contents_view_mac.h"
 
 #include <string>
 
 #include "chrome/browser/browser_shutdown.h"
 #import "chrome/browser/renderer_host/chrome_render_widget_host_view_mac_delegate.h"
 #include "chrome/browser/tab_contents/render_view_context_menu_mac.h"
+#include "chrome/browser/tab_contents/web_drag_bookmark_handler_mac.h"
 #import "chrome/browser/ui/cocoa/focus_tracker.h"
 #import "chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.h"
 #import "chrome/browser/ui/cocoa/tab_contents/web_drop_target.h"
 #import "chrome/browser/ui/cocoa/view_id_util.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/renderer_host/render_view_host_factory.h"
 #include "content/browser/renderer_host/render_widget_host.h"
 #include "content/browser/renderer_host/render_widget_host_view_mac.h"
 #include "content/browser/tab_contents/popup_menu_helper_mac.h"
 #include "content/browser/tab_contents/tab_contents.h"
@@ skipping 389 matching lines @@
 }
 
 @implementation TabContentsViewCocoa
 
 - (id)initWithTabContentsViewMac:(TabContentsViewMac*)w {
   self = [super initWithFrame:NSZeroRect];
   if (self != nil) {
     tabContentsView_ = w;
     dropTarget_.reset(
         [[WebDropTarget alloc] initWithTabContents:[self tabContents]]);
+    bookmarkHandler_.reset(new WebDragBookmarkHandlerMac);
+    [dropTarget_ setDragDelegate:
+        static_cast<content::WebDragDestDelegate*>(bookmarkHandler_.get())];
     [self registerDragTypes];
     // TabContentsViewCocoa's ViewID may be changed to VIEW_ID_DEV_TOOLS_DOCKED
     // by TabContentsController, so we can't just override -viewID method to
     // return it.
     view_id_util::SetID(self, VIEW_ID_TAB_CONTAINER);
 
     [[NSNotificationCenter defaultCenter]
          addObserver:self
             selector:@selector(viewDidBecomeFirstResponder:)
                 name:kViewDidBecomeFirstResponder
@@ skipping 159 matching lines @@
       [[[notification userInfo] objectForKey:kSelectionDirection]
         unsignedIntegerValue];
   if (direction == NSDirectSelection)
     return;
 
   [self tabContents]->
       FocusThroughTabTraversal(direction == NSSelectingPrevious);
 }
 
 @end