Add a convenience typedef LazyInstance<T>::Leaky to avoid repeating T.

base/lazy_instance.h

Index: base/lazy_instance.h
diff --git a/base/lazy_instance.h b/base/lazy_instance.h
index ededc73cbbaeba9d426c85e7d85ef4a9be7b0ed6..4672c3f0519440ae6cfc694beff58ebdd52a9c32 100644
--- a/base/lazy_instance.h
+++ b/base/lazy_instance.h
@@ -73,6 +73,8 @@ struct DefaultLazyInstanceTraits {
   }
 };
 
+// Use LazyInstance<T>::Leaky for a less-verbose call-site typedef; e.g.:
+// LazyInstance<MyType>::Leaky my_leaky_lazy_instance;

[wtc, 2012/01/21 01:47:36]

I suggest also showing the verbose form it replaces:

LazyInstance<MyType, LeakyLazyInstanceTraits<Type> > my_leaky_lazy_instance;

Including base:: will show the typical call-sites outside
the base namespace.

[Ami GONE FROM CHROMIUM, 2012/01/21 04:49:20]

Done.

 template <typename Type>
 struct LeakyLazyInstanceTraits {
   static const bool kRegisterOnExit = false;
@@ -117,6 +119,10 @@ class LazyInstance {
   // the OnExit member function, where needed.
   // ~LazyInstance() {}
 
+  // Convenience typedef to avoid having to repeat Type for leaky lazy
+  // instances.
+  typedef LazyInstance<Type, LeakyLazyInstanceTraits<Type> > Leaky;
+
   Type& Get() {
     return *Pointer();
   }