Erase LinkDisambiguation code on desktop.

content/renderer/disambiguation_popup_helper.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_RENDERER_DISAMBIGUATION_POPUP_HELPER_H_
-#define CONTENT_RENDERER_DISAMBIGUATION_POPUP_HELPER_H_
-
-#include "content/common/content_export.h"
-#include "third_party/WebKit/public/platform/WebVector.h"
-
-namespace gfx {
-class Rect;
-class Size;
-}
-
-namespace blink {
-struct WebRect;
-}
-
-namespace content {
-
-// Contains functions to calculate proper scaling factor and popup size
-class DisambiguationPopupHelper {
- public:
-  CONTENT_EXPORT static float ComputeZoomAreaAndScaleFactor(
-      const gfx::Rect& tap_rect,
-      const blink::WebVector<blink::WebRect>& target_rects,
-      const gfx::Size& screen_size,
-      const gfx::Size& visible_content_size,
-      float total_scale,
-      gfx::Rect* zoom_rect);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_DISAMBIGUATION_POPUP_HELPER_H_