Fixing d8's broken readline history.

src/d8.h

Index: src/d8.h
diff --git a/src/d8.h b/src/d8.h
index e193f105a0d1cc601efc0d81b09d2b9494133a83..15d8d5d50fc96214df64ce7925487bdd360c068a 100644
--- a/src/d8.h
+++ b/src/d8.h
@@ -116,6 +116,29 @@ class CounterMap {
 #endif  // V8_SHARED
 
 
+#ifndef V8_SHARED
+class LineEditor {
+ public:
+  enum Type { DUMB = 0, READLINE = 1 };
+  LineEditor(Type type, const char* name);
+  virtual ~LineEditor() { }
+
+  virtual i::SmartArrayPointer<char> Prompt(const char* prompt) = 0;
+  virtual bool Open() { return true; }
+  virtual bool Close() { return true; }
+  virtual void AddHistory(const char* str) { }
+
+  const char* name() { return name_; }
+  static LineEditor* Get();
+ private:
+  Type type_;
+  const char* name_;
+  LineEditor* next_;
+  static LineEditor* first_;
+};
+#endif  // V8_SHARED
+
+
 class SourceGroup {
  public:
   SourceGroup() :
@@ -313,6 +336,8 @@ class Shell : public i::AllStatic {
   static void AddOSMethods(Handle<ObjectTemplate> os_template);
 #ifndef V8_SHARED
   static const char* kHistoryFileName;
+  static const int kMaxHistoryEntries;
+  static LineEditor* console;
 #endif  // V8_SHARED
   static const char* kPrompt;
   static ShellOptions options;
@@ -343,29 +368,6 @@ class Shell : public i::AllStatic {
 };
 
 
-#ifndef V8_SHARED
-class LineEditor {
- public:
-  enum Type { DUMB = 0, READLINE = 1 };
-  LineEditor(Type type, const char* name);
-  virtual ~LineEditor() { }
-
-  virtual i::SmartArrayPointer<char> Prompt(const char* prompt) = 0;
-  virtual bool Open() { return true; }
-  virtual bool Close() { return true; }
-  virtual void AddHistory(const char* str) { }
-
-  const char* name() { return name_; }
-  static LineEditor* Get();
- private:
-  Type type_;
-  const char* name_;
-  LineEditor* next_;
-  static LineEditor* first_;
-};
-#endif  // V8_SHARED
-
-
 }  // namespace v8