[Courgette] Refactor: Manage AssemblyProgram and EncodedProgram with scoped_ptr.

courgette/ensemble.cc

 // Copyright (c) 2011 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.
 
 #include "courgette/ensemble.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/strings/string_number_conversions.h"
-
+#include "courgette/program_detector.h"
 #include "courgette/region.h"
 #include "courgette/simple_delta.h"
 #include "courgette/streams.h"
 
 namespace courgette {
 
 Element::Element(ExecutableType kind,
                  Ensemble* ensemble,
                  const Region& region)
     : kind_(kind), ensemble_(ensemble), region_(region) {
@@ skipping 12 matching lines @@
 // elements do not overlap.
 Status Ensemble::FindEmbeddedElements() {
 
   size_t length = region_.length();
   const uint8_t* start = region_.start();
 
   size_t position = 0;
   while (position < length) {
     ExecutableType type;
     size_t detected_length;
-
     Status result = DetectExecutableType(start + position,
                                          length - position,
                                          &type, &detected_length);
-
     if (result == C_OK) {
       Region region(start + position, detected_length);
 
       Element* element = new Element(type, this, region);
       owned_elements_.push_back(element);
       elements_.push_back(element);
       position += region.length();
     } else {
       position++;
     }
   }
   return C_OK;
 }
 
 Ensemble::~Ensemble() {
   for (size_t i = 0;  i < owned_elements_.size();  ++i)
     delete owned_elements_[i];
 }
 
 }  // namespace