Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

chrome/browser/extensions/chrome_extension_host_delegate.cc

Index: chrome/browser/extensions/chrome_extension_host_delegate.cc
diff --git a/chrome/browser/extensions/chrome_extension_host_delegate.cc b/chrome/browser/extensions/chrome_extension_host_delegate.cc
index 1a1de87ff7d6fd32c33e8ab8ed7b50f06c3dd6f9..1661a8f62ef3a81391e32ec2757ef88f24ee5cde 100644
--- a/chrome/browser/extensions/chrome_extension_host_delegate.cc
+++ b/chrome/browser/extensions/chrome_extension_host_delegate.cc
@@ -24,9 +24,9 @@ namespace {
 struct QueueWrapper {
   QueueWrapper() {
     queue.reset(new LoadMonitoringExtensionHostQueue(
-        scoped_ptr<ExtensionHostQueue>(new SerialExtensionHostQueue())));
+        std::unique_ptr<ExtensionHostQueue>(new SerialExtensionHostQueue())));
   }
-  scoped_ptr<ExtensionHostQueue> queue;
+  std::unique_ptr<ExtensionHostQueue> queue;
 };
 base::LazyInstance<QueueWrapper> g_queue = LAZY_INSTANCE_INITIALIZER;