Revert of Delete class ScopedPtrCollection. Replaced with vector of unique_ptr.

webrtc/base/scopedptrcollection_unittest.cc

+/*
+ *  Copyright 2014 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <memory>
+
+#include "webrtc/base/constructormagic.h"
+#include "webrtc/base/scopedptrcollection.h"
+#include "webrtc/base/gunit.h"
+
+namespace rtc {
+
+namespace {
+
+class InstanceCounter {
+ public:
+  explicit InstanceCounter(int* num_instances)
+      : num_instances_(num_instances) {
+    ++(*num_instances_);
+  }
+  ~InstanceCounter() {
+    --(*num_instances_);
+  }
+
+ private:
+  int* num_instances_;
+
+  RTC_DISALLOW_COPY_AND_ASSIGN(InstanceCounter);
+};
+
+}  // namespace
+
+class ScopedPtrCollectionTest : public testing::Test {
+ protected:
+  ScopedPtrCollectionTest()
+      : num_instances_(0),
+      collection_(new ScopedPtrCollection<InstanceCounter>()) {
+  }
+
+  int num_instances_;
+  std::unique_ptr<ScopedPtrCollection<InstanceCounter> > collection_;
+};
+
+TEST_F(ScopedPtrCollectionTest, PushBack) {
+  EXPECT_EQ(0u, collection_->collection().size());
+  EXPECT_EQ(0, num_instances_);
+  const int kNum = 100;
+  for (int i = 0; i < kNum; ++i) {
+    collection_->PushBack(new InstanceCounter(&num_instances_));
+  }
+  EXPECT_EQ(static_cast<size_t>(kNum), collection_->collection().size());
+  EXPECT_EQ(kNum, num_instances_);
+  collection_.reset();
+  EXPECT_EQ(0, num_instances_);
+}
+
+TEST_F(ScopedPtrCollectionTest, Remove) {
+  InstanceCounter* ic = new InstanceCounter(&num_instances_);
+  collection_->PushBack(ic);
+  EXPECT_EQ(1u, collection_->collection().size());
+  collection_->Remove(ic);
+  EXPECT_EQ(1, num_instances_);
+  collection_.reset();
+  EXPECT_EQ(1, num_instances_);
+  delete ic;
+  EXPECT_EQ(0, num_instances_);
+}
+
+
+}  // namespace rtc