[Android WebView] Add a legacy quirk for 'user-scalable=no' case

Source/web/WebSettingsImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 39 matching lines @@
     : m_settings(settings)
     , m_showFPSCounter(false)
     , m_showPaintRects(false)
     , m_renderVSyncNotificationEnabled(false)
     , m_gestureTapHighlightEnabled(true)
     , m_autoZoomFocusedNodeToLegibleScale(false)
     , m_deferredImageDecodingEnabled(false)
     , m_doubleTapToZoomEnabled(false)
     , m_supportDeprecatedTargetDensityDPI(false)
     , m_viewportMetaLayoutSizeQuirk(false)
+    , m_viewportMetaNonUserScalableQuirk(false)
     , m_pinchOverlayScrollbarThickness(0)
 {
     ASSERT(settings);
 }
 
 void WebSettingsImpl::setStandardFontFamily(const WebString& font, UScriptCode script)
 {
     m_settings->setStandardFontFamily(font, script);
 }
 
@@ skipping 120 matching lines @@
 void WebSettingsImpl::setViewportMetaLayoutSizeQuirk(bool viewportMetaLayoutSizeQuirk)
 {
     m_viewportMetaLayoutSizeQuirk = viewportMetaLayoutSizeQuirk;
 }
 
 void WebSettingsImpl::setViewportMetaMergeContentQuirk(bool viewportMetaMergeContentQuirk)
 {
     m_settings->setViewportMetaMergeContentQuirk(viewportMetaMergeContentQuirk);
 }
 
+void WebSettingsImpl::setViewportMetaNonUserScalableQuirk(bool viewportMetaNonUserScalableQuirk)
+{
+    m_viewportMetaNonUserScalableQuirk = viewportMetaNonUserScalableQuirk;
+}
+
 void WebSettingsImpl::setViewportMetaZeroValuesQuirk(bool viewportMetaZeroValuesQuirk)
 {
     m_settings->setViewportMetaZeroValuesQuirk(viewportMetaZeroValuesQuirk);
 }
 
 void WebSettingsImpl::setIgnoreMainFrameOverflowHiddenQuirk(bool ignoreMainFrameOverflowHiddenQuirk)
 {
     m_settings->setIgnoreMainFrameOverflowHiddenQuirk(ignoreMainFrameOverflowHiddenQuirk);
 }
 
@@ skipping 530 matching lines @@
 {
     m_settings->setPinchVirtualViewportEnabled(enabled);
 }
 
 void WebSettingsImpl::setUseSolidColorScrollbars(bool enabled)
 {
     m_settings->setUseSolidColorScrollbars(enabled);
 }
 
 } // namespace WebKit