Page::chrome() should return a reference.

Source/core/page/Chrome.cpp

Index: Source/core/page/Chrome.cpp
diff --git a/Source/core/page/Chrome.cpp b/Source/core/page/Chrome.cpp
index 227ef56d0055b4499bb7a2c22085b35c1983fddc..dcdaacdd75deac4c86a286ced37aba7bea7e80ee 100644
--- a/Source/core/page/Chrome.cpp
+++ b/Source/core/page/Chrome.cpp
@@ -188,7 +188,7 @@ static bool canRunModalIfDuringPageDismissal(Page* page, ChromeClient::DialogTyp
     for (Frame* frame = page->mainFrame(); frame; frame = frame->tree()->traverseNext()) {
         FrameLoader::PageDismissalType dismissal = frame->loader()->pageDismissalEventBeingDispatched();
         if (dismissal != FrameLoader::NoDismissal)
-            return page->chrome()->client()->shouldRunModalDialogDuringPageDismissal(dialog, message, dismissal);
+            return page->chrome().client()->shouldRunModalDialogDuringPageDismissal(dialog, message, dismissal);
     }
     return true;
 }