Fix Sunspider performance regression

content/public/common/renderer_preferences.h

Index: content/public/common/renderer_preferences.h
diff --git a/content/public/common/renderer_preferences.h b/content/public/common/renderer_preferences.h
index 30c7c9aed5cb6b898505cda7824f9ececcd0e936..938e10aad2c793bad8d1333fd2365f86739249cf 100644
--- a/content/public/common/renderer_preferences.h
+++ b/content/public/common/renderer_preferences.h
@@ -107,6 +107,14 @@ struct CONTENT_EXPORT RendererPreferences {
 
   // Specifies whether renderer input event throttle is enabled.
   bool throttle_input_events;
+
+  // Specifies whether the renderer reports frame name changes to the browser
+  // process.
+  // TODO(fsamuel): This is a short-term workaround to avoid regressing
+  // Sunspider. We need to find an efficient way to report changes to frame
+  // names to the browser process. See http://crbug.com/169110 for more
+  // information.
+  bool report_frame_name_changes;
 };
 
 }  // namespace content