Pass implementation object to supplemental classes by reference

Source/modules/filesystem/DOMWindowFileSystem.cpp

Index: Source/modules/filesystem/DOMWindowFileSystem.cpp
diff --git a/Source/modules/filesystem/DOMWindowFileSystem.cpp b/Source/modules/filesystem/DOMWindowFileSystem.cpp
index faa99c554ce6932cecb9e6d11975748c235fda03..c1cf4761ff99eae4bc44e2e79decfca1af0352a7 100644
--- a/Source/modules/filesystem/DOMWindowFileSystem.cpp
+++ b/Source/modules/filesystem/DOMWindowFileSystem.cpp
@@ -48,12 +48,12 @@ DOMWindowFileSystem::~DOMWindowFileSystem()
 {
 }
 
-void DOMWindowFileSystem::webkitRequestFileSystem(DOMWindow* window, int type, long long size, PassOwnPtr<FileSystemCallback> successCallback, PassOwnPtr<ErrorCallback> errorCallback)
+void DOMWindowFileSystem::webkitRequestFileSystem(DOMWindow& window, int type, long long size, PassOwnPtr<FileSystemCallback> successCallback, PassOwnPtr<ErrorCallback> errorCallback)
 {
-    if (!window->isCurrentlyDisplayedInFrame())
+    if (!window.isCurrentlyDisplayedInFrame())
         return;
 
-    Document* document = window->document();
+    Document* document = window.document();
     if (!document)
         return;
 
@@ -68,15 +68,15 @@ void DOMWindowFileSystem::webkitRequestFileSystem(DOMWindow* window, int type, l
         return;
     }
 
-    LocalFileSystem::from(document)->requestFileSystem(document, fileSystemType, size, FileSystemCallbacks::create(successCallback, errorCallback, document, fileSystemType));
+    LocalFileSystem::from(*document)->requestFileSystem(document, fileSystemType, size, FileSystemCallbacks::create(successCallback, errorCallback, document, fileSystemType));
 }
 
-void DOMWindowFileSystem::webkitResolveLocalFileSystemURL(DOMWindow* window, const String& url, PassOwnPtr<EntryCallback> successCallback, PassOwnPtr<ErrorCallback> errorCallback)
+void DOMWindowFileSystem::webkitResolveLocalFileSystemURL(DOMWindow& window, const String& url, PassOwnPtr<EntryCallback> successCallback, PassOwnPtr<ErrorCallback> errorCallback)
 {
-    if (!window->isCurrentlyDisplayedInFrame())
+    if (!window.isCurrentlyDisplayedInFrame())
         return;
 
-    Document* document = window->document();
+    Document* document = window.document();
     if (!document)
         return;
 
@@ -92,7 +92,7 @@ void DOMWindowFileSystem::webkitResolveLocalFileSystemURL(DOMWindow* window, con
         return;
     }
 
-    LocalFileSystem::from(document)->resolveURL(document, completedURL, ResolveURICallbacks::create(successCallback, errorCallback, document));
+    LocalFileSystem::from(*document)->resolveURL(document, completedURL, ResolveURICallbacks::create(successCallback, errorCallback, document));
 }
 
 COMPILE_ASSERT(static_cast<int>(DOMWindowFileSystem::TEMPORARY) == static_cast<int>(FileSystemTypeTemporary), enum_mismatch);