Remove unused fields from //content.

content/browser/renderer_host/render_view_host_impl.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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 341 matching lines @@
   int frames_ref_count_;
 
   // Our delegate, which wants to know about changes in the RenderView.
   RenderViewHostDelegate* delegate_;
 
   // The SiteInstance associated with this RenderViewHost.  All pages drawn
   // in this RenderViewHost are part of this SiteInstance.  Cannot change
   // over time.
   scoped_refptr<SiteInstanceImpl> instance_;
 
-  // true if we are currently waiting for a response for drag context
-  // information.
-  bool waiting_for_drag_context_response_;
-
   // A bitwise OR of bindings types that have been enabled for this RenderView.
   // See BindingsPolicy for details.
   int enabled_bindings_;
 
   // The most recent page ID we've heard from the renderer process.  This is
   // used as context when other session history related IPCs arrive.
   // TODO(creis): Allocate this in WebContents/NavigationController instead.
   int32_t page_id_;
 
   // Tracks whether this RenderViewHost is in an active state.  False if the
@@ skipping 37 matching lines @@
   bool render_view_ready_on_process_launch_;
 
   base::WeakPtrFactory<RenderViewHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_