cc: Add CopyAsBitmapRequest class to hold the readback callback.

cc/base/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_BASE_SCOPED_PTR_VECTOR_H_
 #define CC_BASE_SCOPED_PTR_VECTOR_H_
 
 #include <algorithm>
 #include <vector>
 
@@ skipping 15 matching lines @@
       const_reverse_iterator;
 
 #if defined(OS_ANDROID)
   // On Android the iterator is not a class, so we can't block assignment.
   typedef typename std::vector<T*>::iterator iterator;
 #else
   // Ban setting values on the iterator directly. New pointers must be passed
   // to methods on the ScopedPtrVector class to appear in the vector.
   class iterator : public std::vector<T*>::iterator {
    public:
-    iterator(const typename std::vector<T*>::iterator& other)
+    iterator(const typename std::vector<T*>::iterator& other) // NOLINT
         : std::vector<T*>::iterator(other) {}
     T* const& operator*() { return std::vector<T*>::iterator::operator*(); }
   };
 #endif
 
   ScopedPtrVector() {}
 
   ~ScopedPtrVector() { clear(); }
 
   size_t size() const {
@@ skipping 75 matching lines @@
   void pop_back() {
     delete data_.back();
     data_.pop_back();
   }
 
   void insert(iterator position, scoped_ptr<T> item) {
     DCHECK(position <= end());
     data_.insert(position, item.release());
   }
 
+  void insert_and_take(iterator position,
+                       ScopedPtrVector<T>& other) {
+    std::vector<T*> tmp_data;
+    for (ScopedPtrVector<T>::iterator it = other.begin();
+         it != other.end();
+         ++it) {
+      tmp_data.push_back(other.take(it).release());
+    }
+    data_.insert(position, tmp_data.begin(), tmp_data.end());
+  }
+
   void swap(ScopedPtrVector<T>& other) {
     data_.swap(other.data_);
   }
 
   void swap(iterator a, iterator b) {
     DCHECK(a < end());
     DCHECK(b < end());
     if (a == end() || b == end() || a == b)
       return;
     typename std::vector<T*>::iterator writable_a = a;
@@ skipping 18 matching lines @@
 
  private:
   std::vector<T*> data_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedPtrVector);
 };
 
 }  // namespace cc
 
 #endif  // CC_BASE_SCOPED_PTR_VECTOR_H_