[Android WebView] Never turn off viewport and fixed layout

android_webview/browser/renderer_host/aw_render_view_host_ext.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 ANDROID_WEBVIEW_BROWSER_RENDER_HOST_RENDER_VIEW_HOST_EXT_H_
 #define ANDROID_WEBVIEW_BROWSER_RENDER_HOST_RENDER_VIEW_HOST_EXT_H_
 
 #include "content/public/browser/web_contents_observer.h"
 
 #include "android_webview/common/aw_hit_test_data.h"
@@ skipping 32 matching lines @@
   void RequestNewHitTestDataAt(int view_x, int view_y);
 
   // Optimization to avoid unnecessary Java object creation on hit test.
   bool HasNewHitTestData() const;
   void MarkHitTestDataRead();
 
   // Return |last_hit_test_data_|. Note that this is unavoidably racy;
   // the corresponding public WebView API is as well.
   const AwHitTestData& GetLastHitTestData() const;
 
-  // Set whether fixed layout mode is enabled. Must be updated together
-  // with WebSettings.viewport_enabled.
-  // TODO(mnaganov): Leave only one setting. See the comments on
-  //   https://bugs.webkit.org/show_bug.cgi?id=109946
-  void SetEnableFixedLayoutMode(bool enable);
-
   // Sets the zoom level for text only. Used in layout modes other than
   // Text Autosizing.
   void SetTextZoomLevel(double level);
 
   void ResetScrollAndScaleState();
 
   // Sets the initial page scale. This overrides initial scale set by
   // the meta viewport tag.
   void SetInitialPageScale(double page_scale_factor);
 
@@ skipping 19 matching lines @@
   AwHitTestData last_hit_test_data_;
 
   bool has_new_hit_test_data_;
 
   DISALLOW_COPY_AND_ASSIGN(AwRenderViewHostExt);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_RENDER_HOST_RENDER_VIEW_HOST_EXT_H_