DevTools: move DOMExtension.js into ui module.

third_party/WebKit/Source/devtools/front_end/bindings/FileUtils.js

Index: third_party/WebKit/Source/devtools/front_end/bindings/FileUtils.js
diff --git a/third_party/WebKit/Source/devtools/front_end/bindings/FileUtils.js b/third_party/WebKit/Source/devtools/front_end/bindings/FileUtils.js
index c37cd7e374a216da2b1322aba61c17d2c963160c..2cb47b73c88519f5835301cc2a96d91c93d312dd 100644
--- a/third_party/WebKit/Source/devtools/front_end/bindings/FileUtils.js
+++ b/third_party/WebKit/Source/devtools/front_end/bindings/FileUtils.js
@@ -176,22 +176,6 @@ Bindings.ChunkedFileReader = class {
 };
 
 /**
- * @param {function(!File)} callback
- * @return {!Node}
- */
-Bindings.createFileSelectorElement = function(callback) {
-  var fileSelectorElement = createElement('input');
-  fileSelectorElement.type = 'file';
-  fileSelectorElement.style.display = 'none';
-  fileSelectorElement.setAttribute('tabindex', -1);
-  fileSelectorElement.onchange = onChange;
-  function onChange(event) {
-    callback(fileSelectorElement.files[0]);
-  }
-  return fileSelectorElement;
-};
-
-/**
  * @implements {Common.OutputStream}
  * @unrestricted
  */