Convert //ios from scoped_ptr to std::unique_ptr.

ios/chrome/browser/net/ios_chrome_url_request_context_getter.cc

Index: ios/chrome/browser/net/ios_chrome_url_request_context_getter.cc
diff --git a/ios/chrome/browser/net/ios_chrome_url_request_context_getter.cc b/ios/chrome/browser/net/ios_chrome_url_request_context_getter.cc
index 0c53bc14d8e68ac5812376cb023aaae05f7cfd8d..cabb9421197575cce73f8e0dc0895df9885e058e 100644
--- a/ios/chrome/browser/net/ios_chrome_url_request_context_getter.cc
+++ b/ios/chrome/browser/net/ios_chrome_url_request_context_getter.cc
@@ -7,6 +7,7 @@
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state_io_data.h"
 #include "ios/chrome/browser/ios_chrome_io_thread.h"
@@ -83,7 +84,7 @@ class FactoryForIsolatedApp : public IOSChromeURLRequestContextFactory {
 // ----------------------------------------------------------------------------
 
 IOSChromeURLRequestContextGetter::IOSChromeURLRequestContextGetter(
-    scoped_ptr<IOSChromeURLRequestContextFactory> factory)
+    std::unique_ptr<IOSChromeURLRequestContextFactory> factory)
     : factory_(std::move(factory)), url_request_context_(nullptr) {
   DCHECK(factory_);
 }
@@ -126,7 +127,7 @@ IOSChromeURLRequestContextGetter* IOSChromeURLRequestContextGetter::Create(
     const ChromeBrowserStateIOData* io_data,
     ProtocolHandlerMap* protocol_handlers) {
   return new IOSChromeURLRequestContextGetter(
-      make_scoped_ptr(new FactoryForMain(io_data, protocol_handlers)));
+      base::WrapUnique(new FactoryForMain(io_data, protocol_handlers)));
 }
 
 // static
@@ -135,6 +136,6 @@ IOSChromeURLRequestContextGetter::CreateForIsolatedApp(
     net::URLRequestContextGetter* main_context,
     const ChromeBrowserStateIOData* io_data,
     const base::FilePath& partition_path) {
-  return new IOSChromeURLRequestContextGetter(make_scoped_ptr(
+  return new IOSChromeURLRequestContextGetter(base::WrapUnique(
       new FactoryForIsolatedApp(io_data, partition_path, main_context)));
 }