cc: Add PictureLayerTilingSet to manage PictureLayerTiling

cc/scoped_ptr_vector.h

 // Copyright 2012 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 CC_SCOPED_PTR_VECTOR_H_
 #define CC_SCOPED_PTR_VECTOR_H_
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 49 matching lines @@
     data_[index] = NULL;
     return ret.Pass();
   }
 
   void remove(size_t index) {
     DCHECK(index < size());
     delete data_[index];
     data_.erase(data_.begin() + index);
   }
 
+  void reserve(size_t size) {
+    data_.reserve(size);
+  }
+
   void clear() {
     STLDeleteElements(&data_);
   }
 
   void append(scoped_ptr<T> item) {
     data_.push_back(item.release());
   }
 
   void insert(size_t index, scoped_ptr<T> item) {
     DCHECK(index < size());
@@ skipping 12 matching lines @@
 
  private:
   std::vector<T*> data_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedPtrVector);
 };
 
 }  // namespace cc
 
 #endif  // CC_SCOPED_PTR_VECTOR_H_