FileAPI: Move FileSystemQuotaUtil related functions into SandboxContext

webkit/browser/fileapi/sandbox_file_system_test_helper.cc

Index: webkit/browser/fileapi/sandbox_file_system_test_helper.cc
diff --git a/webkit/browser/fileapi/sandbox_file_system_test_helper.cc b/webkit/browser/fileapi/sandbox_file_system_test_helper.cc
index b57cf0ea555ebe04f08fa2d8e297eafcf3637ecb..66205176c551379eb720e501eef5b1306f226519 100644
--- a/webkit/browser/fileapi/sandbox_file_system_test_helper.cc
+++ b/webkit/browser/fileapi/sandbox_file_system_test_helper.cc
@@ -62,7 +62,7 @@ void SandboxFileSystemTestHelper::TearDown() {
 }
 
 base::FilePath SandboxFileSystemTestHelper::GetOriginRootPath() {
-  return file_system_context_->sandbox_backend()->
+  return file_system_context_->sandbox_context()->
       GetBaseDirectoryForOriginAndType(origin_, type_, false);
 }
 
@@ -82,7 +82,7 @@ base::FilePath SandboxFileSystemTestHelper::GetLocalPathFromASCII(
 
 base::FilePath SandboxFileSystemTestHelper::GetUsageCachePath() const {
   return file_system_context_->
-      sandbox_backend()->GetUsageCachePathForOriginAndType(origin_, type_);
+      sandbox_context()->GetUsageCachePathForOriginAndType(origin_, type_);
 }
 
 FileSystemURL SandboxFileSystemTestHelper::CreateURL(
@@ -130,8 +130,7 @@ void SandboxFileSystemTestHelper::AddFileChangeObserver(
 }
 
 FileSystemUsageCache* SandboxFileSystemTestHelper::usage_cache() {
-  return file_system_context()->sandbox_backend()->
-      sandbox_context_->usage_cache();
+  return file_system_context()->sandbox_context()->usage_cache();
 }
 
 void SandboxFileSystemTestHelper::SetUpFileSystem() {
@@ -142,7 +141,7 @@ void SandboxFileSystemTestHelper::SetUpFileSystem() {
   DCHECK(file_util_);
 
   // Prepare the origin's root directory.
-  file_system_context_->sandbox_backend()->
+  file_system_context_->sandbox_context()->
       GetBaseDirectoryForOriginAndType(origin_, type_, true /* create */);
 
   // Initialize the usage cache file.