Cleanup ios/web_view.

ios/web_view/internal/criwv_web_main_delegate.mm

Index: ios/web_view/internal/criwv_web_main_delegate.mm
diff --git a/ios/web_view/internal/criwv_web_main_delegate.mm b/ios/web_view/internal/criwv_web_main_delegate.mm
index 2a170cd617ce0343ebb18002260b1c87bd5b56d9..afa4ad1ca3b1cfbb8df0716ba26b9e984c2ef35b 100644
--- a/ios/web_view/internal/criwv_web_main_delegate.mm
+++ b/ios/web_view/internal/criwv_web_main_delegate.mm
@@ -4,19 +4,19 @@
 
 #import "ios/web_view/internal/criwv_web_main_delegate.h"
 
+#include "base/memory/ptr_util.h"
 #import "ios/web_view/internal/criwv_web_client.h"
 #import "ios/web_view/public/criwv_delegate.h"
 
 namespace ios_web_view {
 
-CRIWVWebMainDelegate::CRIWVWebMainDelegate(id<CRIWVDelegate> delegate) {
-  delegate_ = delegate;
-}
+CRIWVWebMainDelegate::CRIWVWebMainDelegate(id<CRIWVDelegate> delegate)
+    : delegate_(delegate) {}
 
 CRIWVWebMainDelegate::~CRIWVWebMainDelegate() {}
 
 void CRIWVWebMainDelegate::BasicStartupComplete() {
-  web_client_.reset(new CRIWVWebClient(delegate_));
+  web_client_ = base::MakeUnique<CRIWVWebClient>(delegate_);
   web::SetWebClient(web_client_.get());
 }