Plumb through site-specific quirks setting with a command line switch.

chrome/common/render_messages.h

Index: chrome/common/render_messages.h
diff --git a/chrome/common/render_messages.h b/chrome/common/render_messages.h
index b6ccc672ee6ece803e478376a14cd1e47c6d5ba8..f960d65bf0b1adf73caf461eedab251f1884faf3 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -1614,6 +1614,7 @@ struct ParamTraits<WebPreferences> {
     WriteParam(m, p.dom_paste_enabled);
     WriteParam(m, p.developer_extras_enabled);
     WriteParam(m, p.inspector_settings);
+    WriteParam(m, p.site_specific_quirks_enabled);
     WriteParam(m, p.shrinks_standalone_images_to_fit);
     WriteParam(m, p.uses_universal_detector);
     WriteParam(m, p.text_areas_are_resizable);
@@ -1652,6 +1653,7 @@ struct ParamTraits<WebPreferences> {
         ReadParam(m, iter, &p->dom_paste_enabled) &&
         ReadParam(m, iter, &p->developer_extras_enabled) &&
         ReadParam(m, iter, &p->inspector_settings) &&
+        ReadParam(m, iter, &p->site_specific_quirks_enabled) &&
         ReadParam(m, iter, &p->shrinks_standalone_images_to_fit) &&
         ReadParam(m, iter, &p->uses_universal_detector) &&
         ReadParam(m, iter, &p->text_areas_are_resizable) &&