Fix some presubmit errors.

src/top.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 923 matching lines @@
     while (!it.done()) {
       JavaScriptFrame* frame = it.frame();
       Context* context = Context::cast(frame->context());
       if (context->global_context() == *Debug::debug_context()) {
         it.Advance();
       } else {
         break;
       }
     }
   }
-#endif  // ENABLE_DEBUGGER_SUPPORT  
+#endif  // ENABLE_DEBUGGER_SUPPORT
   if (it.done()) return Handle<Context>::null();
   JavaScriptFrame* frame = it.frame();
   Context* context = Context::cast(frame->context());
   return Handle<Context>(context->global_context());
 }
 
 
 Object* Top::LookupSpecialFunction(JSObject* receiver,
                                    JSObject* prototype,
                                    JSFunction* function) {
@@ skipping 27 matching lines @@
   Top::break_access_->Lock();
 }
 
 
 ExecutionAccess::~ExecutionAccess() {
   Top::break_access_->Unlock();
 }
 
 
 } }  // namespace v8::internal