Reland "Optimize function across closures." (again).

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 9333e9edc4003e2dd7a9f4bb7884eb6645ed2d6e..d4120054153194e591dd378737b0d00934ecfc8a 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -6787,6 +6787,8 @@ class SharedFunctionInfo: public HeapObject {
   inline int ic_age();
   inline void set_ic_age(int age);
 
+  DECL_BOOLEAN_ACCESSORS(optimize_next_closure)
+
   // Indicates if this function can be lazy compiled.
   // This is used to determine if we can safely flush code from a function
   // when doing GC if we expect that the function will no longer be used.
@@ -7077,6 +7079,7 @@ class SharedFunctionInfo: public HeapObject {
   enum CompilerHints {
     kAllowLazyCompilation,
     kAllowLazyCompilationWithoutContext,
+    kOptimizeNextClosure,
     kOptimizationDisabled,
     kStrictModeFunction,
     kUsesArguments,
@@ -7302,7 +7305,7 @@ class JSFunction: public JSObject {
   // Mark this function for lazy recompilation. The function will be
   // recompiled the next time it is executed.
   void MarkForOptimization();
-  void MarkForConcurrentOptimization();
+  void AttemptConcurrentOptimization();
   void MarkInOptimizationQueue();
 
   // Tells whether or not the function is already marked for lazy