Revert of Remove ScopedVector from all other codes in media/

media/midi/midi_manager_unittest.cc

Index: media/midi/midi_manager_unittest.cc
diff --git a/media/midi/midi_manager_unittest.cc b/media/midi/midi_manager_unittest.cc
index cc57a5ff9692ed3c4a2d4017c8d648731f8f5680..9975c0ab1421aa213ca059df4143cc174eaee643 100644
--- a/media/midi/midi_manager_unittest.cc
+++ b/media/midi/midi_manager_unittest.cc
@@ -14,6 +14,7 @@
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
+#include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/system_monitor/system_monitor.h"
@@ -221,11 +222,11 @@
 
 TEST_F(MidiManagerTest, TooManyPendingSessions) {
   // Push as many client requests for starting session as possible.
-  std::vector<std::unique_ptr<FakeMidiManagerClient>> many_existing_clients;
+  ScopedVector<FakeMidiManagerClient> many_existing_clients;
   many_existing_clients.resize(MidiManager::kMaxPendingClientCount);
   for (size_t i = 0; i < MidiManager::kMaxPendingClientCount; ++i) {
-    many_existing_clients[i] = base::MakeUnique<FakeMidiManagerClient>();
-    StartTheNthSession(many_existing_clients[i].get(), i + 1);
+    many_existing_clients[i] = new FakeMidiManagerClient;
+    StartTheNthSession(many_existing_clients[i], i + 1);
   }
   EXPECT_TRUE(manager_->start_initialization_is_called_);
 
@@ -251,7 +252,7 @@
   // Close all successful sessions in FIFO order.
   size_t sessions = many_existing_clients.size();
   for (size_t i = 0; i < many_existing_clients.size(); ++i, --sessions)
-    EndSession(many_existing_clients[i].get(), sessions, sessions - 1);
+    EndSession(many_existing_clients[i], sessions, sessions - 1);
 }
 
 TEST_F(MidiManagerTest, AbortSession) {