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

extensions/browser/app_window/app_window.cc

Index: extensions/browser/app_window/app_window.cc
diff --git a/extensions/browser/app_window/app_window.cc b/extensions/browser/app_window/app_window.cc
index 7294d6f8463ad5ec09290ae1129b13ae31bd4f1f..1f0257e7c9182dfdcfa463e0fd84ebd0452a5a2e 100644
--- a/extensions/browser/app_window/app_window.cc
+++ b/extensions/browser/app_window/app_window.cc
@@ -88,7 +88,7 @@ void SetBoundsProperties(const gfx::Rect& bounds,
                          const gfx::Size& max_size,
                          const std::string& bounds_name,
                          base::DictionaryValue* window_properties) {
-  scoped_ptr<base::DictionaryValue> bounds_properties(
+  std::unique_ptr<base::DictionaryValue> bounds_properties(
       new base::DictionaryValue());
 
   bounds_properties->SetInteger("left", bounds.x());
@@ -583,7 +583,7 @@ void AppWindow::SetAppIconUrl(const GURL& url) {
                  image_loader_ptr_factory_.GetWeakPtr()));
 }
 
-void AppWindow::UpdateShape(scoped_ptr<SkRegion> region) {
+void AppWindow::UpdateShape(std::unique_ptr<SkRegion> region) {
   native_app_window_->UpdateShape(std::move(region));
 }