Replace scoped_ptr with unique_ptr in webrtc/common_audio/

webrtc/common_audio/blocker_unittest.cc

Index: webrtc/common_audio/blocker_unittest.cc
diff --git a/webrtc/common_audio/blocker_unittest.cc b/webrtc/common_audio/blocker_unittest.cc
index a5a7b56282f7362260358140864b25913dd2bbb3..eea3e2516a08db71bbc1760975b4b5ffb7b9a307 100644
--- a/webrtc/common_audio/blocker_unittest.cc
+++ b/webrtc/common_audio/blocker_unittest.cc
@@ -8,6 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
+#include <memory>
+
 #include "webrtc/common_audio/blocker.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
@@ -307,7 +309,7 @@ TEST_F(BlockerTest, InitialDelaysAreMinimum) {
   CopyBlockerCallback callback;
 
   for (size_t i = 0; i < arraysize(kChunkSize); ++i) {
-    rtc::scoped_ptr<float[]> window(new float[kBlockSize[i]]);
+    std::unique_ptr<float[]> window(new float[kBlockSize[i]]);
     for (size_t j = 0; j < kBlockSize[i]; ++j) {
       window[j] = 1.f;
     }