FileAPI: Remove TODOs around readAsBinaryString - it's back in the spec

FileReader.readAsBinaryString() was removed from the spec after typed
arrays became a thing. But all browsers kept shipping it, and it looks
risky to remove, so it was added back to the spec. Remove the use
counters and TODOs in the IDL files.

R=foolip@chromium.org

Review-Url: https://codereview.chromium.org/2171953002
Cr-Commit-Position: refs/heads/master@{#407202}

third_party/WebKit/Source/core/fileapi/FileReader.idl

@@ -40,9 +40,7 @@
 ] interface FileReader : EventTarget {
     // async read methods
     [RaisesException] void readAsArrayBuffer(Blob blob);
-    // TODO(foolip): readAsBinaryString() was removed from the spec in 2012:
-    // https://github.com/w3c/FileAPI/commit/8cce54559dc27bf8b8244f3f0ca9fb3e4d96efdb
-    [RaisesException, Measure] void readAsBinaryString(Blob blob);
+    [RaisesException] void readAsBinaryString(Blob blob);
     [RaisesException] void readAsText(Blob blob, optional DOMString label);
     [RaisesException] void readAsDataURL(Blob blob);
 

third_party/WebKit/Source/core/fileapi/FileReaderSync.idl

@@ -35,9 +35,7 @@
     Constructor,
 ] interface FileReaderSync {
     [CallWith=ExecutionContext, RaisesException] ArrayBuffer readAsArrayBuffer(Blob blob);
-    // TODO(foolip): readAsBinaryString() was removed from the spec in 2012:
-    // https://github.com/w3c/FileAPI/commit/8cce54559dc27bf8b8244f3f0ca9fb3e4d96efdb
-    [CallWith=ExecutionContext, RaisesException, Measure] DOMString readAsBinaryString(Blob blob);
+    [CallWith=ExecutionContext, RaisesException] DOMString readAsBinaryString(Blob blob);
     [CallWith=ExecutionContext, RaisesException] DOMString readAsText(Blob blob, optional DOMString label);
     [CallWith=ExecutionContext, RaisesException] DOMString readAsDataURL(Blob blob);
 };

third_party/WebKit/Source/core/frame/UseCounter.h

@@ -639,8 +639,6 @@ public:
         V8HTMLLinkElement_Disabled_AttributeSetter = 811,
         V8HTMLStyleElement_Disabled_AttributeGetter = 812,
         V8HTMLStyleElement_Disabled_AttributeSetter = 813,
-        V8FileReader_ReadAsBinaryString_Method = 814,
-        V8FileReaderSync_ReadAsBinaryString_Method = 815,
         V8DOMError_Constructor = 816,
         V8DOMError_Name_AttributeGetter = 817,
         V8DOMError_Message_AttributeGetter = 818,