Fixes two documentation bugs in property_bag.

chrome/common/property_bag.h

 // Copyright (c) 2006-2008 The Chromium 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 CHROME_COMMON_PROPERTY_BAG_H_
 #define CHROME_COMMON_PROPERTY_BAG_H_
 
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/linked_ptr.h"
 
 class PropertyAccessorBase;
 
 // A property bag holds a generalized list of arbitrary metadata called
 // properties. Each property is a class type derived from PropertyBag::Prop
 // that can bet set and retrieved.
 //
 // The property bag is not read or written directly. Instead, callers go
 // through a PropertyAccessor. The Accessor generates the unique IDs that
-// identify different properties, so uniquely identify a property. The Accessor
-// is templatized to also provide typesafety to the callers.
+// identify different properties. The Accessor is templatized to also provide
+// typesafety to the callers.
 //
 // Example:
 //   // Note: you don't want to use Singleton for your Accessor if you're using
 //   // a simple type like int or string as the data, since it will enforce that
 //   // there is only one singleton for that type, which will conflict. If
 //   // you're putting in some struct that's unique to you, go ahead.
 //   PropertyAccessor<int>* my_accessor() const {
 //     static PropertyAccessor<int>* accessor = NULL;
 //     if (!accessor) accessor = new PropertyAccessor<int>;
 //     return accessor;
@@ skipping 83 matching lines @@
   // Identifier for this property.
   PropertyBag::PropID prop_id_;
 
   DISALLOW_COPY_AND_ASSIGN(PropertyAccessorBase);
 };
 
 // PropertyAccessor -----------------------------------------------------------
 
 // Provides typesafe accessor functions for a property bag, and manages the
 // unique identifiers for properties via the PropertyAccessorBase.
-//
-// Note that class T must be derived from PropertyBag::Prop.
 template<class T>
 class PropertyAccessor : public PropertyAccessorBase {
  public:
   PropertyAccessor() : PropertyAccessorBase() {}
   virtual ~PropertyAccessor() {}
 
   // Makes a copy of the |prop| object for storage.
   void SetProperty(PropertyBag* bag, const T& prop) {
     SetPropertyInternal(bag, new Container(prop));
   }
@@ skipping 28 matching lines @@
       return new Container(data_);
     }
 
     T data_;
   };
 
   DISALLOW_COPY_AND_ASSIGN(PropertyAccessor);
 };
 
 #endif  // CHROME_COMMON_PROPERTY_BAG_H_