Integrate external mount points to IsolatedContext

webkit/fileapi/isolated_mount_point_provider.cc

Index: webkit/fileapi/isolated_mount_point_provider.cc
diff --git a/webkit/fileapi/isolated_mount_point_provider.cc b/webkit/fileapi/isolated_mount_point_provider.cc
index a54f8c7bd8c008f314d85ce52712a4fc4655b895..63c6d09dfb19aa42cd27df1a2a783d2c08868942 100644
--- a/webkit/fileapi/isolated_mount_point_provider.cc
+++ b/webkit/fileapi/isolated_mount_point_provider.cc
@@ -103,6 +103,7 @@ FileSystemFileUtil* IsolatedMountPointProvider::GetFileUtil(
     FileSystemType type) {
   switch (type) {
     case kFileSystemTypeIsolated:
+    case kFileSystemTypeNativeLocal:
       return isolated_file_util_.get();
     case kFileSystemTypeDragged:
       return dragged_file_util_.get();
@@ -113,11 +114,7 @@ FileSystemFileUtil* IsolatedMountPointProvider::GetFileUtil(
       return device_media_file_util_.get();
 #endif
 
-    case kFileSystemTypeTemporary:
-    case kFileSystemTypePersistent:
-    case kFileSystemTypeExternal:
-    case kFileSystemTypeTest:
-    case kFileSystemTypeUnknown:
+    default:
       NOTREACHED();
   }
   return NULL;
@@ -126,8 +123,7 @@ FileSystemFileUtil* IsolatedMountPointProvider::GetFileUtil(
 FilePath IsolatedMountPointProvider::GetPathForPermissionsCheck(
     const FilePath& virtual_path) const {
   // For isolated filesystems we only check per-filesystem permissions.
-  NOTREACHED();
-  return virtual_path;
+  return FilePath();
 }
 
 FileSystemOperationInterface*