Introduce "--enable-memory-info" command-line flag to enable reporting

webkit/glue/webpreferences.cc

Index: webkit/glue/webpreferences.cc
diff --git a/webkit/glue/webpreferences.cc b/webkit/glue/webpreferences.cc
index 7fd6a39c7af8d73a5cc25570e08de8c93538a534..987cef449c98d5521c43e3935d55e5fb89357ddd 100644
--- a/webkit/glue/webpreferences.cc
+++ b/webkit/glue/webpreferences.cc
@@ -96,6 +96,9 @@ void WebPreferences::Apply(WebView* web_view) const {
   // Enable gpu-accelerated compositing if requested on the command line.
   settings->setAcceleratedCompositingEnabled(accelerated_compositing_enabled);
 
+  // Enable memory info reporting to page if requested on the command line.
+  settings->setMemoryInfoEnabled(memory_info_enabled);
+
   for (WebInspectorPreferences::const_iterator it = inspector_settings.begin();
        it != inspector_settings.end(); ++it)
     web_view->setInspectorSetting(WebString::fromUTF8(it->first),