Replace scoped_ptr with unique_ptr everywhere

webrtc/base/scoped_ptr.h

Index: webrtc/base/scoped_ptr.h
diff --git a/webrtc/base/scoped_ptr.h b/webrtc/base/scoped_ptr.h
index db5ef9e696db65f9ac0f54d3f308e2bc7e73145f..af515f680110564311a0b761c90e7313bda9af2a 100644
--- a/webrtc/base/scoped_ptr.h
+++ b/webrtc/base/scoped_ptr.h
@@ -33,7 +33,7 @@ namespace rtc {
 template <typename T, typename Deleter = std::default_delete<T>>
 using scoped_ptr = std::unique_ptr<T, Deleter>;
 
-// These used to convert between rtc::scoped_ptr and std::unique_ptr. Now they
+// These used to convert between std::unique_ptr and std::unique_ptr. Now they
 // are no-ops.
 template <typename T>
 std::unique_ptr<T> ScopedToUnique(std::unique_ptr<T> up) {