Done, I think

core/field_textdropdown.js

@@ -144,18 +144,6 @@ Blockly.FieldTextDropdown.prototype.init = function() {
   this.disableColourChange_ = true;
 };
 
-/**
- * Close the input widget if this input is being deleted.
- */
-Blockly.FieldTextDropdown.prototype.dispose = function() {
-  if (this.mouseUpWrapper_) {
-    Blockly.unbindEvent_(this.mouseUpWrapper_);
-    this.mouseUpWrapper_ = null;
-    Blockly.Touch.clearTouchIdentifier();
-  }
-  Blockly.FieldTextDropdown.superClass_.dispose.call(this);
-};
-
 /**
  * If the drop-down isn't open, show the text editor.
  */
@@ -172,10 +160,21 @@ Blockly.FieldTextDropdown.prototype.showEditor_ = function() {
 };
 
 /**
- * @return {boolean} True if the option list is generated by a function.
- *     Otherwise false.
+ * Callback when the drop-down menu is hidden.
  */
-Blockly.FieldTextDropdown.prototype.isOptionListDynamic = Blockly.FieldDropdown.prototype.isOptionListDynamic;
+Blockly.FieldTextDropdown.prototype.onHide = Blockly.FieldDropdown.prototype.onHide;
+
+/**
+ * Handle the selection of an item in the dropdown menu.
+ * @param {!goog.ui.Menu} menu The Menu component clicked.
+ * @param {!goog.ui.MenuItem} menuItem The MenuItem selected within menu.
+ */
+Blockly.FieldTextDropdown.prototype.onItemSelected = Blockly.FieldDropdown.prototype.onItemSelected;
+
+/**
+ * @private
+ */
+Blockly.FieldTextDropdown.prototype.trimOptions_ = Blockly.FieldDropdown.prototype.trimOptions_;
 
 /**
  * Return a list of the options for this dropdown.
@@ -186,6 +185,30 @@ Blockly.FieldTextDropdown.prototype.isOptionListDynamic = Blockly.FieldDropdown.
  */
 Blockly.FieldTextDropdown.prototype.getOptions = Blockly.FieldDropdown.prototype.getOptions;
 
+/**
+ * Get the language-neutral value from this dropdown menu.
+ * @return {string} Current text.
+ */
+Blockly.FieldTextDropdown.prototype.getValue = Blockly.FieldDropdown.prototype.getValue;
+
+/**
+ * Set the language-neutral value for this dropdown menu.
+ * @param {string} newValue New value to set.
+ */
+Blockly.FieldTextDropdown.prototype.setValue = Blockly.FieldDropdown.prototype.setValue;
+
+/**
+ * Sets the text in this field.  Trigger a rerender of the source block.
+ * @param {?string} text New text.
+ */
+Blockly.FieldTextDropdown.prototype.setText = Blockly.FieldDropdown.prototype.setText;
+
+/**
+ * @return {boolean} True if the option list is generated by a function.
+ *     Otherwise false.
+ */
+Blockly.FieldTextDropdown.prototype.isOptionListDynamic = Blockly.FieldDropdown.prototype.isOptionListDynamic;
+
 /**
  * Position a drop-down arrow at the appropriate location at render-time.
  * See: Blockly.FieldDropDown.prototype.positionArrow.
@@ -201,15 +224,15 @@ Blockly.FieldTextDropdown.prototype.positionArrow = Blockly.FieldDropdown.protot
 Blockly.FieldTextDropdown.prototype.showDropdown_ = Blockly.FieldDropdown.prototype.showEditor_;
 
 /**
- * Handle the selection of an item in the dropdown menu.
- * @param {!goog.ui.Menu} menu The Menu component clicked.
- * @param {!goog.ui.MenuItem} menuItem The MenuItem selected within menu.
- */
-Blockly.FieldTextDropdown.prototype.onItemSelected = Blockly.FieldDropdown.prototype.onItemSelected;
-
-/**
- * Callback when the drop-down menu is hidden.
+ * Close the input widget if this input is being deleted.
  */
-Blockly.FieldTextDropdown.prototype.onHide = Blockly.FieldDropdown.prototype.onHide;
+Blockly.FieldTextDropdown.prototype.dispose = function() {
+  if (this.mouseUpWrapper_) {
+    Blockly.unbindEvent_(this.mouseUpWrapper_);
+    this.mouseUpWrapper_ = null;
+    Blockly.Touch.clearTouchIdentifier();
+  }
+  Blockly.FieldTextDropdown.superClass_.dispose.call(this);
+};
 
 Blockly.Field.register('field_textdropdown', Blockly.FieldTextDropdown);