Set the minimum timer interval on a per-page basis, and adjust it when...

chrome/common/render_messages.cc

Index: chrome/common/render_messages.cc
===================================================================
--- chrome/common/render_messages.cc	(revision 75215)
+++ chrome/common/render_messages.cc	(working copy)
@@ -675,6 +675,7 @@
   WriteParam(m, p.accelerated_video_enabled);
   WriteParam(m, p.memory_info_enabled);
   WriteParam(m, p.interactive_form_validation_enabled);
+  WriteParam(m, p.minimum_timer_interval);
 }
 
 bool ParamTraits<WebPreferences>::Read(const Message* m, void** iter,
@@ -730,7 +731,8 @@
       ReadParam(m, iter, &p->accelerated_layers_enabled) &&
       ReadParam(m, iter, &p->accelerated_video_enabled) &&
       ReadParam(m, iter, &p->memory_info_enabled) &&
-      ReadParam(m, iter, &p->interactive_form_validation_enabled);
+      ReadParam(m, iter, &p->interactive_form_validation_enabled) &&
+      ReadParam(m, iter, &p->minimum_timer_interval);
 }
 
 void ParamTraits<WebPreferences>::Log(const param_type& p, std::string* l) {