replace deprecated version of SetWithoutPathExpansion

extensions/browser/app_window/app_window_geometry_cache.cc

Index: extensions/browser/app_window/app_window_geometry_cache.cc
diff --git a/extensions/browser/app_window/app_window_geometry_cache.cc b/extensions/browser/app_window/app_window_geometry_cache.cc
index b2e13ab6617833242aa2b77c9857694faf3b83c0..87f055595670ee807b21be6b56ebec664b6f4b62 100644
--- a/extensions/browser/app_window/app_window_geometry_cache.cc
+++ b/extensions/browser/app_window/app_window_geometry_cache.cc
@@ -9,6 +9,7 @@
 #include <utility>
 
 #include "base/bind.h"
+#include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
@@ -111,7 +112,8 @@ void AppWindowGeometryCache::SyncToStorage() {
                                        eit = extension_data.end();
          it != eit;
          ++it) {
-      base::DictionaryValue* value = new base::DictionaryValue;
+      std::unique_ptr<base::DictionaryValue> value =
+          base::MakeUnique<base::DictionaryValue>();
       const gfx::Rect& bounds = it->second.bounds;
       const gfx::Rect& screen_bounds = it->second.screen_bounds;
       DCHECK(!bounds.IsEmpty());
@@ -128,7 +130,7 @@ void AppWindowGeometryCache::SyncToStorage() {
       value->SetInteger("state", it->second.window_state);
       value->SetString(
           "ts", base::Int64ToString(it->second.last_change.ToInternalValue()));
-      dict->SetWithoutPathExpansion(it->first, value);
+      dict->SetWithoutPathExpansion(it->first, std::move(value));
 
       FOR_EACH_OBSERVER(
           Observer,