Context menus should appear above the touch point if invoked by long press.

content/public/browser/web_contents_view_delegate.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_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_WIN_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_WIN_DELEGATE_H_
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #elif defined(OS_MACOSX)
 #import <Cocoa/Cocoa.h>
 #endif
 
 #include "content/common/content_export.h"
+#include "content/public/common/context_menu_source_type.h"
 #include "ui/gfx/native_widget_types.h"
 
 #if defined(OS_MACOSX)
 @protocol RenderWidgetHostViewMacDelegate;
 #endif
 
 namespace gfx {
 class Size;
 }
 
@@ skipping 10 matching lines @@
 // This interface allows a client to extend the functionality of the
 // WebContentsView implementation.
 class CONTENT_EXPORT WebContentsViewDelegate {
  public:
   virtual ~WebContentsViewDelegate() {}
 
   // Returns a delegate to process drags not handled by content.
   virtual WebDragDestDelegate* GetDragDestDelegate() = 0;
 
   // Shows a context menu.
-  virtual void ShowContextMenu(const content::ContextMenuParams& params) = 0;
+  virtual void ShowContextMenu(
+      const content::ContextMenuParams& params,
+      const content::ContextMenuSourceType& type) = 0;

[jam, 2012/09/07 17:07:35]

nit: we don't pass enums by const reference, just content::ContextMenuSourceType
type

 
 #if defined(OS_WIN) || defined(USE_AURA)
   // These methods allow the embedder to intercept WebContentsViewWin's
   // implementation of these WebContentsView methods. See the WebContentsView
   // interface documentation for more information about these methods.
   virtual void StoreFocus() = 0;
   virtual void RestoreFocus() = 0;
   virtual bool Focus() = 0;
   virtual void TakeFocus(bool reverse) = 0;
   virtual void SizeChanged(const gfx::Size& size) = 0;
@@ skipping 21 matching lines @@
   // events on the responder chain.
   virtual NSObject<RenderWidgetHostViewMacDelegate>*
       CreateRenderWidgetHostViewDelegate(
           RenderWidgetHost* render_widget_host) = 0;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_WIN_DELEGATE_H_