Update the Idle collector to do a full GC

src/v8.cc

Index: src/v8.cc
===================================================================
--- src/v8.cc	(revision 2740)
+++ src/v8.cc	(working copy)
@@ -157,13 +157,13 @@
 }
 
 
-void V8::IdleNotification(bool is_high_priority) {
-  if (!FLAG_use_idle_notification) return;
+bool V8::IdleNotification(bool is_high_priority) {
+  if (!FLAG_use_idle_notification) return false;
   // Ignore high priority instances of V8.
-  if (is_high_priority) return;
+  if (is_high_priority) return false;
 
-  // Uncommit unused memory in new space.
-  Heap::UncommitFromSpace();
+  // Tell the heap that it may want to adjust.
+  return Heap::IdleNotification();
 }