Re-write many calls to WrapUnique() with MakeUnique()

chrome/browser/extensions/crx_installer_browsertest.cc

Index: chrome/browser/extensions/crx_installer_browsertest.cc
diff --git a/chrome/browser/extensions/crx_installer_browsertest.cc b/chrome/browser/extensions/crx_installer_browsertest.cc
index 1b39305986f9b0e9bca084ef9caf43b410751e32..165daa5cfe163ed40afc9ad0656da9dbf5012f60 100644
--- a/chrome/browser/extensions/crx_installer_browsertest.cc
+++ b/chrome/browser/extensions/crx_installer_browsertest.cc
@@ -185,8 +185,8 @@ std::unique_ptr<ExtensionInstallPrompt> MockPromptProxy::CreatePrompt() {
 
 std::unique_ptr<MockPromptProxy> CreateMockPromptProxyForBrowser(
     Browser* browser) {
-  return base::WrapUnique(
-      new MockPromptProxy(browser->tab_strip_model()->GetActiveWebContents()));
+  return base::MakeUnique<MockPromptProxy>(
+      browser->tab_strip_model()->GetActiveWebContents());
 }
 
 class ManagementPolicyMock : public extensions::ManagementPolicy::Provider {