[Android WebView] Never turn off viewport and fixed layout

android_webview/native/aw_settings.h

 // Copyright (c) 2013 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_NATIVE_AW_SETTINGS_H_
 #define ANDROID_WEBVIEW_NATIVE_AW_SETTINGS_H_
 
 #include <jni.h>
 
 #include "base/android/jni_helper.h"
 #include "base/android/scoped_java_ref.h"
 #include "content/public/browser/web_contents_observer.h"
 
 namespace android_webview {
 
 class AwRenderViewHostExt;
 
 class AwSettings : public content::WebContentsObserver {
  public:
   AwSettings(JNIEnv* env, jobject obj);
   virtual ~AwSettings();
 
   // Called from Java.
   void Destroy(JNIEnv* env, jobject obj);
   void ResetScrollAndScaleState(JNIEnv* env, jobject obj);
-  void SetEnableFixedLayoutMode(JNIEnv* env, jobject obj, jboolean enabled);
   void SetInitialPageScale(JNIEnv* env, jobject obj, jfloat page_scale_percent);
   void SetTextZoom(JNIEnv* env, jobject obj, jint text_zoom_percent);
   void SetWebContents(JNIEnv* env, jobject obj, jint web_contents);
 
  private:
   AwRenderViewHostExt* GetAwRenderViewHostExt();
-  void UpdateEnableFixedLayoutMode();
   void UpdateInitialPageScale();
   void UpdateTextZoom();
 
   // WebContentsObserver overrides:
   virtual void RenderViewCreated(
       content::RenderViewHost* render_view_host) OVERRIDE;
 
   JavaObjectWeakGlobalRef java_ref_;
-  bool enable_fixed_layout_;
   float initial_page_scale_percent_;
   int text_zoom_percent_;
 };
 
 bool RegisterAwSettings(JNIEnv* env);
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_NATIVE_AW_SETTINGS_H_