Fix suspicious code detected by closure compiler.

ui/file_manager/file_manager/foreground/js/metadata/byte_reader.js

Index: ui/file_manager/file_manager/foreground/js/metadata/byte_reader.js
diff --git a/ui/file_manager/file_manager/foreground/js/metadata/byte_reader.js b/ui/file_manager/file_manager/foreground/js/metadata/byte_reader.js
index e3fbfb210e9c875f7f49617db0a5c51fb1f6b952..e422bf5077e735b4ed97c32515114c27b6ee0115 100644
--- a/ui/file_manager/file_manager/foreground/js/metadata/byte_reader.js
+++ b/ui/file_manager/file_manager/foreground/js/metadata/byte_reader.js
@@ -305,7 +305,7 @@ ByteReader.prototype.validateRead = function(size, opt_end) {
   if (typeof opt_end == 'undefined')
     opt_end = this.view_.byteLength;
 
-  ByteReader.validateRead(this.view_, this.pos_, size, opt_end);
+  ByteReader.validateRead(this.pos_, size, opt_end);
 };
 
 /**
@@ -439,7 +439,7 @@ ByteReader.prototype.readSlice = function(size, opt_end,
 
   var arrayConstructor = opt_arrayConstructor || Uint8Array;
   var slice = new arrayConstructor(
-      this.view_.buffer, this.view_.byteOffset + this.pos, size);
+      this.view_.buffer, this.view_.byteOffset + this.pos_, size);
   this.pos_ += size;
 
   return slice;