Revert of Do not eagerly instantiate accessors' JSFunction.

src/ic/call-optimization.h

Index: src/ic/call-optimization.h
diff --git a/src/ic/call-optimization.h b/src/ic/call-optimization.h
index efabd3387c0ad3c71daffb63b11f7c71a14fa6e7..7963d1ce67052c8c93434d949839aae7991a70e7 100644
--- a/src/ic/call-optimization.h
+++ b/src/ic/call-optimization.h
@@ -15,7 +15,7 @@
 // Holds information about possible function call optimizations.
 class CallOptimization BASE_EMBEDDED {
  public:
-  explicit CallOptimization(Handle<Object> function);
+  explicit CallOptimization(Handle<JSFunction> function);
 
   bool is_constant_call() const { return !constant_function_.is_null(); }
 
@@ -51,7 +51,6 @@
 
  private:
   void Initialize(Handle<JSFunction> function);
-  void Initialize(Handle<FunctionTemplateInfo> function_template_info);
 
   // Determines whether the given function can be called using the
   // fast api call builtin.