MD WebUI: Remove local DOM access from CrSearchFieldBehavior

chrome/browser/resources/md_downloads/crisper.js

Index: chrome/browser/resources/md_downloads/crisper.js
diff --git a/chrome/browser/resources/md_downloads/crisper.js b/chrome/browser/resources/md_downloads/crisper.js
index 0677f9144202cc2a4c0b582afd1028661c746aa2..76ba86968342ede51226fff435a0a8400fe58963 100644
--- a/chrome/browser/resources/md_downloads/crisper.js
+++ b/chrome/browser/resources/md_downloads/crisper.js
@@ -10507,10 +10507,17 @@ var CrSearchFieldBehavior = {
   },
 
   /**
+   * @abstract
+   * @return {!HTMLInputElement} The input field element the behavior should
+   * use.
+   */
+  getSearchInput: function() {},
+
+  /**
    * @return {string} The value of the search field.
    */
   getValue: function() {
-    return this.$.searchInput.value;
+    return this.getSearchInput().value;
   },
 
   /**
@@ -10520,7 +10527,7 @@ var CrSearchFieldBehavior = {
   setValue: function(value) {
     // Use bindValue when setting the input value so that changes propagate
     // correctly.
-    this.$.searchInput.bindValue = value;
+    this.getSearchInput().bindValue = value;
     this.onValueChanged_(value);
   },
 
@@ -10531,7 +10538,7 @@ var CrSearchFieldBehavior = {
 
   /** @private */
   focus_: function() {
-    this.$.searchInput.focus();
+    this.getSearchInput().focus();
   },
 
   onSearchTermSearch: function() {
@@ -10565,12 +10572,7 @@ var CrSearchFieldBehavior = {
     }
 
     this.setValue('');
-    this.$.searchInput.blur();
-  },
-
-  /** @return {boolean} */
-  isSearchFocused: function() {
-    return this.$.searchTerm.focused;
+    this.getSearchInput().blur();
   }
 };
 (function() {
@@ -11347,10 +11349,15 @@ var SearchField = Polymer({
     value_: String,
   },
 
+  /** @return {!HTMLInputElement} */
+  getSearchInput: function() {
+    return this.$.searchInput;
+  },
+
   /** @private */
   clearSearch_: function() {
     this.setValue('');
-    this.$.searchInput.focus();
+    this.getSearchInput().focus();
   },
 
   /** @private */