Move BrowserThread to content namespace.

chrome/browser/tab_contents/web_drag_source_win.cc

 // 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.
 
 #include "chrome/browser/tab_contents/web_drag_source_win.h"
 
 #include "base/task.h"
 #include "chrome/browser/tab_contents/web_drag_utils_win.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 
+using content::BrowserThread;
 using WebKit::WebDragOperationNone;
 
 namespace {
 
 static void GetCursorPositions(gfx::NativeWindow wnd, gfx::Point* client,
                                gfx::Point* screen) {
   POINT cursor_pos;
   GetCursorPos(&cursor_pos);
   screen->SetPoint(cursor_pos.x, cursor_pos.y);
   ScreenToClient(wnd, &cursor_pos);
@@ skipping 90 matching lines @@
     // That's OK, we can continue the drag, we just can't send messages back to
     // our drag source.
     render_view_host_ = NULL;
   } else if (content::NOTIFICATION_TAB_CONTENTS_DISCONNECTED == type) {
     // This could be possible when we close the tab and the source is still
     // being used in DoDragDrop at the time that the virtual file is being
     // downloaded.
     render_view_host_ = NULL;
   }
 }