Auto merge of #11875 - izgzhen:file-manager-backend, r=Manishearth

Integration and improvements of File API backends

Basically three major changes:

1. More complete origin check in `FileManagerThreadMsg`
2. Add reference counting logic to file manage store and script API
3. Integrate the support of slicing

r? @Manishearth

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- [ ] These changes fix #__ (github issue number if applicable).

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1 files changed, 2 insertions, 0 deletions

diff --git a/components/script/dom/file.rs b/components/script/dom/file.rs
index 86e8888a88f..bfc6b886282 100644
--- a/components/script/dom/file.rs
+++ b/components/script/dom/file.rs
@@ -23,6 +23,7 @@ pub struct File {
 }
 
 impl File {
+    #[allow(unrooted_must_root)]
     fn new_inherited(blob_impl: BlobImpl, name: DOMString,
                      modified: Option<i64>, typeString: &str) -> File {
         File {
@@ -39,6 +40,7 @@ impl File {
         }
     }
 
+    #[allow(unrooted_must_root)]
     pub fn new(global: GlobalRef, blob_impl: BlobImpl,
                name: DOMString, modified: Option<i64>, typeString: &str) -> Root<File> {
         reflect_dom_object(box File::new_inherited(blob_impl, name, modified, typeString),