[Android WebView] Treat zero values in viewport arguments specially

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 169 matching lines @@
 void WebSettingsImpl::setSupportDeprecatedTargetDensityDPI(bool supportDeprecatedTargetDensityDPI)
 {
     m_supportDeprecatedTargetDensityDPI = supportDeprecatedTargetDensityDPI;
 }
 
 void WebSettingsImpl::setViewportMetaLayoutSizeQuirk(bool viewportMetaLayoutSizeQuirk)
 {
     m_viewportMetaLayoutSizeQuirk = viewportMetaLayoutSizeQuirk;
 }
 
+void WebSettingsImpl::setViewportMetaZeroValuesQuirk(bool viewportMetaZeroValuesQuirk)
+{
+    m_settings->setViewportMetaZeroValuesQuirk(viewportMetaZeroValuesQuirk);
+}
+
 void WebSettingsImpl::setSupportsMultipleWindows(bool supportsMultipleWindows)
 {
     m_settings->setSupportsMultipleWindows(supportsMultipleWindows);
 }
 
 void WebSettingsImpl::setLoadsImagesAutomatically(bool loadsImagesAutomatically)
 {
     m_settings->setLoadsImagesAutomatically(loadsImagesAutomatically);
 }
 
@@ skipping 500 matching lines @@
 {
     m_settings->setPinchVirtualViewportEnabled(enabled);
 }
 
 void WebSettingsImpl::setUseSolidColorScrollbars(bool enabled)
 {
     m_settings->setUseSolidColorScrollbars(enabled);
 }
 
 } // namespace WebKit