Extract external file systems handling from isolated context.

webkit/fileapi/isolated_context_unittest.cc

Index: webkit/fileapi/isolated_context_unittest.cc
diff --git a/webkit/fileapi/isolated_context_unittest.cc b/webkit/fileapi/isolated_context_unittest.cc
index 78efd16ed63d7aaaf531b49065831a55ebe405d8..ba8681b788ad390946c16511a0d4623671956777 100644
--- a/webkit/fileapi/isolated_context_unittest.cc
+++ b/webkit/fileapi/isolated_context_unittest.cc
@@ -19,7 +19,7 @@
 
 namespace fileapi {
 
-typedef IsolatedContext::FileInfo FileInfo;
+typedef IsolatedContext::MountPointInfo FileInfo;
 
 namespace {
 
@@ -112,7 +112,7 @@ TEST_F(IsolatedContextTest, RegisterAndRevokeTest) {
   isolated_context()->RemoveReference(id_);
 
   std::string id2 = isolated_context()->RegisterFileSystemForPath(
-      kFileSystemTypeNativeLocal, FilePath(DRIVE FPL("/foo")), NULL);
+      kFileSystemTypeIsolatedNativeLocal, FilePath(DRIVE FPL("/foo")), NULL);
 
   // Make sure the GetDraggedFileInfo returns false for both ones.
   ASSERT_FALSE(isolated_context()->GetDraggedFileInfo(id2, &toplevels));
@@ -126,9 +126,9 @@ TEST_F(IsolatedContextTest, RegisterAndRevokeTest) {
   std::string id3 = isolated_context()->RegisterFileSystemForPath(
       kFileSystemTypeNativeLocal, path, NULL);
   std::string id4 = isolated_context()->RegisterFileSystemForPath(
-      kFileSystemTypeNativeLocal, path, NULL);
+      kFileSystemTypeIsolatedNativeLocal, path, NULL);
   std::string id5 = isolated_context()->RegisterFileSystemForPath(
-      kFileSystemTypeNativeLocal, path, NULL);
+      kFileSystemTypeIsolatedNativeLocal, path, NULL);
 
   // Remove file system for id4.
   isolated_context()->AddReference(id4);