Move optional.h to webrtc/api/

webrtc/api/optional_unittest.cc

 /*
  *  Copyright 2015 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 <sstream>
 #include <string>
 #include <utility>
 #include <vector>
 
+#include "webrtc/api/optional.h"
 #include "webrtc/rtc_base/gunit.h"
-#include "webrtc/rtc_base/optional.h"
 
 namespace rtc {
 
 namespace {
 
 struct MyUnprintableType {
   int value;
 };
 
 struct MyPrintableType {
   int value;
 };
 
 struct MyOstreamPrintableType {
   int value;
 };
 
 void PrintTo(const MyPrintableType& mpt, std::ostream* os) {
   *os << "The value is " << mpt.value;
 }
 
-std::ostream& operator<<(std::ostream& os,
-                         const MyPrintableType& mpt) {
+std::ostream& operator<<(std::ostream& os, const MyPrintableType& mpt) {
   os << mpt.value;
   return os;
 }
 
-std::ostream& operator<<(std::ostream& os,
-                         const MyOstreamPrintableType& mpt) {
+std::ostream& operator<<(std::ostream& os, const MyOstreamPrintableType& mpt) {
   os << mpt.value;
   return os;
 }
 
 // Class whose instances logs various method calls (constructor, destructor,
 // etc.). Each instance has a unique ID (a simple global sequence number) and
 // an origin ID. When a copy is made, the new object gets a fresh ID but copies
 // the origin ID from the original. When a new Logger is created from scratch,
 // it gets a fresh ID, and the origin ID is the same as the ID (default
 // constructor) or given as an argument (explicit constructor).
@@ skipping 764 matching lines @@
   // for MyPrintableType never getting called.
   const MyPrintableType dont_warn{17};
   const MyOstreamPrintableType dont_warn2{18};
   std::stringstream sstr;
   sstr << dont_warn;
   PrintTo(dont_warn, &sstr);
   sstr << dont_warn2;
 }
 
 }  // namespace rtc