Mandate unique_ptr for base::IDMap in IDMapOwnPointer mode.

chrome/browser/android/compositor/layer_title_cache.cc

Index: chrome/browser/android/compositor/layer_title_cache.cc
diff --git a/chrome/browser/android/compositor/layer_title_cache.cc b/chrome/browser/android/compositor/layer_title_cache.cc
index b2162acb2fa23d46867d11b2a0256a62f730e2df..a1aacb3573cbfd8c75d28b81b66f0c31d7b8bcde 100644
--- a/chrome/browser/android/compositor/layer_title_cache.cc
+++ b/chrome/browser/android/compositor/layer_title_cache.cc
@@ -8,6 +8,7 @@
 
 #include <memory>
 
+#include "base/memory/ptr_util.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/ui_resource_layer.h"
 #include "chrome/browser/android/compositor/decoration_title.h"
@@ -68,10 +69,11 @@ void LayerTitleCache::UpdateLayer(JNIEnv* env,
     }
   } else {
     layer_cache_.AddWithID(
-        new DecorationTitle(
+        base::MakeUnique<DecorationTitle>(
             resource_manager_, title_resource_id, favicon_resource_id,
             spinner_resource_id_, spinner_incognito_resource_id_, fade_width_,
-            favicon_start_padding_, favicon_end_padding_, is_incognito, is_rtl),
+            favicon_start_padding_, favicon_end_padding_, is_incognito,
+            is_rtl),
         tab_id);
   }
 }