Enabling new-style 'virtual viewport' pinch by default on ChromeOS

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index 894d68b86bbe6d7345812a0c65f688a544377b18..2d11d5fb2ef16f545135bef6ff2465ca10cc8342 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -436,7 +436,14 @@ WebPreferences RenderViewHostImpl::GetWebkitPrefs(const GURL& url) {
       command_line.HasSwitch(switches::kEnableExperimentalWebPlatformFeatures);
   prefs.region_based_columns_enabled =
       command_line.HasSwitch(switches::kEnableRegionBasedColumns);
-  if (command_line.HasSwitch(cc::switches::kEnablePinchVirtualViewport)) {
+
+#if defined(OS_CHROMEOS)
+  bool enable_pinch_virtual_viewport = true;
+#else
+  bool enable_pinch_virtual_viewport =
+      command_line.HasSwitch(cc::switches::kEnablePinchVirtualViewport);
+#endif
+  if (enable_pinch_virtual_viewport) {
     prefs.pinch_virtual_viewport_enabled = true;
     prefs.pinch_overlay_scrollbar_thickness = 10;
   }