Auto merge of #6714 - boghison:filelist, r=jdm

Implement a FileList



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tests/wpt/metadata/FileAPI/filelist-section/filelist.html.ini

@@ -1,11 +1,5 @@
 [filelist.html]
   type: testharness
-  [Check if window has a FileList property]
-    expected: FAIL
-
-  [Check if FileList.length is 0]
-    expected: FAIL
-
   [Check if item is a instanceof Function]
     expected: FAIL
 

tests/wpt/metadata/FileAPI/idlharness.html.ini

@@ -48,24 +48,6 @@
   [Blob interface: new File(["myFileBits"\], "myFileName") must inherit property "close" with the proper type (4)]
     expected: FAIL
 
-  [FileList interface: existence and properties of interface object]
-    expected: FAIL
-
-  [FileList interface object length]
-    expected: FAIL
-
-  [FileList interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [FileList interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [FileList interface: operation item(unsigned long)]
-    expected: FAIL
-
-  [FileList interface: attribute length]
-    expected: FAIL
-
   [FileList must be primary interface of file_input.files]
     expected: FAIL
 

tests/wpt/metadata/FileAPI/idlharness.worker.js.ini

@@ -48,24 +48,6 @@
   [Blob interface: new File(["myFileBits"\], "myFileName") must inherit property "close" with the proper type (4)]
     expected: FAIL
 
-  [FileList interface: existence and properties of interface object]
-    expected: FAIL
-
-  [FileList interface object length]
-    expected: FAIL
-
-  [FileList interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [FileList interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [FileList interface: operation item(unsigned long)]
-    expected: FAIL
-
-  [FileList interface: attribute length]
-    expected: FAIL
-
   [FileReader interface: existence and properties of interface object]
     expected: FAIL
 

tests/wpt/metadata/workers/semantics/interface-objects/001.worker.js.ini

@@ -9,9 +9,6 @@
   [The MessageChannel interface object should be exposed.]
     expected: FAIL
 
-  [The FileList interface object should be exposed.]
-    expected: FAIL
-
   [The CanvasProxy interface object should be exposed.]
     expected: FAIL
 

tests/wpt/mozilla/tests/mozilla/interfaces.html

@@ -99,6 +99,7 @@ var interfaceNamesInGlobalScope = [
   "Event",
   "EventTarget",
   "File",
+  "FileList",
   "FileReader",
   "FormData",
   "HTMLAnchorElement",