Trigger use of viewportAndroid.css through new setting.

content/renderer/render_view_impl.cc

 // 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.
 
 #include "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/auto_reset.h"
@@ skipping 1092 matching lines @@
       prefs.report_screen_size_in_physical_pixels_quirk);
 
   bool record_full_layer =
       RenderViewImpl::FromWebView(web_view)
           ? RenderViewImpl::FromWebView(web_view)->DoesRecordFullLayer()
           : false;
   settings->setMainFrameClipsContent(!record_full_layer);
 
   settings->setShrinksStandaloneImagesToFit(false);
   settings->setShrinksViewportContentToFit(true);
+  settings->setUseMobileViewportStyle(true);
 #endif
 
   WebNetworkStateNotifier::setOnLine(prefs.is_online);
   WebNetworkStateNotifier::setWebConnectionType(
       NetConnectionTypeToWebConnectionType(prefs.connection_type));
   settings->setPinchVirtualViewportEnabled(
       prefs.pinch_virtual_viewport_enabled);
 
   settings->setPinchOverlayScrollbarThickness(
       prefs.pinch_overlay_scrollbar_thickness);
@@ skipping 2878 matching lines @@
     std::vector<gfx::Size> sizes;
     ConvertToFaviconSizes(icon_urls[i].sizes(), &sizes);
     if (!url.isEmpty())
       urls.push_back(
           FaviconURL(url, ToFaviconType(icon_urls[i].iconType()), sizes));
   }
   SendUpdateFaviconURL(urls);
 }
 
 }  // namespace content