Move MessageLocations constructor out of header

src/messages.h

 // Copyright 2006-2008 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.
 
 // The infrastructure used for (localized) message reporting in V8.
 //
 // Note: there's a big unresolved issue about ownership of the data
 // structures used by this framework.
 
 #ifndef V8_MESSAGES_H_
 #define V8_MESSAGES_H_
 
 #include "src/base/smart-pointers.h"
 #include "src/handles.h"
 #include "src/list.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class JSMessageObject;
 class LookupIterator;
 class SourceInfo;
 
 class MessageLocation {
  public:
+  MessageLocation(Handle<Script> script, int start_pos, int end_pos);
   MessageLocation(Handle<Script> script, int start_pos, int end_pos,
-                  Handle<JSFunction> function = Handle<JSFunction>())
-      : script_(script),
-        start_pos_(start_pos),
-        end_pos_(end_pos),
-        function_(function) {}
-  MessageLocation() : start_pos_(-1), end_pos_(-1) { }
+                  Handle<JSFunction> function);
+  MessageLocation();
 
   Handle<Script> script() const { return script_; }
   int start_pos() const { return start_pos_; }
   int end_pos() const { return end_pos_; }
   Handle<JSFunction> function() const { return function_; }
 
  private:
   Handle<Script> script_;
   int start_pos_;
   int end_pos_;
@@ skipping 472 matching lines @@
   static Handle<String> GetMessage(Isolate* isolate, Handle<Object> data);
   static base::SmartArrayPointer<char> GetLocalizedMessage(Isolate* isolate,
                                                            Handle<Object> data);
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_MESSAGES_H_