Remove some dead code from the Isolate.

src/isolate.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_ISOLATE_H_
 #define V8_ISOLATE_H_
 
 #include <queue>
 #include "include/v8-debug.h"
 #include "src/allocation.h"
@@ skipping 293 matching lines @@
 
 #ifdef USE_SIMULATOR
   Simulator* simulator_;
 #endif
 
   Address js_entry_sp_;  // the stack pointer of the bottom JS entry frame
   // the external callback we're currently in
   ExternalCallbackScope* external_callback_scope_;
   StateTag current_vm_state_;
 
-  // Generated code scratch locations.
-  int32_t formal_count_;
-
   // Call back function to report unsafe JS accesses.
   v8::FailedAccessCheckCallback failed_access_check_callback_;
 
  private:
   void InitializeInternal();
 
   v8::TryCatch* try_catch_handler_;
 };
 
 
@@ skipping 274 matching lines @@
   THREAD_LOCAL_TOP_ADDRESS(Address, pending_handler_sp)
 
   THREAD_LOCAL_TOP_ACCESSOR(bool, external_caught_exception)
 
   void clear_pending_message() {
     thread_local_top_.pending_message_obj_ = heap_.the_hole_value();
   }
   v8::TryCatch* try_catch_handler() {
     return thread_local_top_.try_catch_handler();
   }
-  Address try_catch_handler_address() {
-    return thread_local_top_.try_catch_handler_address();
-  }
   bool* external_caught_exception_address() {
     return &thread_local_top_.external_caught_exception_;
   }
 
   THREAD_LOCAL_TOP_ADDRESS(Object*, scheduled_exception)
 
   Address pending_message_obj_address() {
     return reinterpret_cast<Address>(&thread_local_top_.pending_message_obj_);
   }
 
@@ skipping 34 matching lines @@
   }
 
   // Bottom JS entry.
   Address js_entry_sp() {
     return thread_local_top_.js_entry_sp_;
   }
   inline Address* js_entry_sp_address() {
     return &thread_local_top_.js_entry_sp_;
   }
 
-  // Generated code scratch locations.
-  void* formal_count_address() { return &thread_local_top_.formal_count_; }
-
   // Returns the global object of the current context. It could be
   // a builtin object, or a JS global object.
   Handle<GlobalObject> global_object() {
     return Handle<GlobalObject>(context()->global_object());
   }
 
   // Returns the global proxy object of the current context.
   JSObject* global_proxy() {
     return context()->global_proxy();
   }
@@ skipping 889 matching lines @@
   }
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ISOLATE_H_