Return unique_ptr from WebClient::CreateWebMainParts()

ios/chrome/browser/web/chrome_web_client.mm

Index: ios/chrome/browser/web/chrome_web_client.mm
diff --git a/ios/chrome/browser/web/chrome_web_client.mm b/ios/chrome/browser/web/chrome_web_client.mm
index ccf042f332e166d5afd3775ff80fd8170d17cb16..b226eb8067be25fb5f3531aca0967e6581fc0855 100644
--- a/ios/chrome/browser/web/chrome_web_client.mm
+++ b/ios/chrome/browser/web/chrome_web_client.mm
@@ -59,8 +59,9 @@ ChromeWebClient::ChromeWebClient() {}
 
 ChromeWebClient::~ChromeWebClient() {}
 
-web::WebMainParts* ChromeWebClient::CreateWebMainParts() {
-  return new IOSChromeMainParts(*base::CommandLine::ForCurrentProcess());
+std::unique_ptr<web::WebMainParts> ChromeWebClient::CreateWebMainParts() {
+  return base::MakeUnique<IOSChromeMainParts>(

[Eugene But (OOO till 7-30), 2017/01/20 22:11:41]

Please add include of ptr_util everywhere where base::MakeUnique is used.

[michaeldo, 2017/01/23 17:30:54]

Done.

+      *base::CommandLine::ForCurrentProcess());
 }
 
 void ChromeWebClient::PreWebViewCreation() const {