Make dynamic variables be an optional module.

Also straighten out some dependencies.

core/bubble.js

@@ -26,6 +26,7 @@
 
 goog.provide('Blockly.Bubble');
 
+goog.require('Blockly.Scrollbar');
 goog.require('Blockly.Touch');
 goog.require('Blockly.utils');
 goog.require('Blockly.utils.Coordinate');

core/inject.js

@@ -33,6 +33,7 @@ goog.require('Blockly.DropDownDiv');
 goog.require('Blockly.Events');
 goog.require('Blockly.Grid');
 goog.require('Blockly.Options');
+goog.require('Blockly.ScrollbarPair');
 goog.require('Blockly.Tooltip');
 goog.require('Blockly.utils');
 goog.require('Blockly.utils.dom');

core/requires.js

@@ -51,6 +51,8 @@ goog.require('Blockly.Toolbox');
 // If a trashcan on the workspace isn't required, then Blockly.inject's
 // "trashcan" configuration must be false.
 goog.require('Blockly.Trashcan');
+// Only needed if one is using the 'VARIABLE_DYNAMIC' typed variables category.
+goog.require('Blockly.VariablesDynamic');
 // If zoom controls aren't required, then Blockly.inject's
 // "zoom"/"controls" configuration must be false.
 goog.require('Blockly.ZoomControls');

core/trashcan.js

@@ -26,6 +26,7 @@
 
 goog.provide('Blockly.Trashcan');
 
+goog.require('Blockly.Scrollbar');
 goog.require('Blockly.utils.dom');
 goog.require('Blockly.utils.Rect');
 goog.require('Blockly.Xml');

core/variables_dynamic.js

@@ -19,7 +19,7 @@
  */
 
 /**
- * @fileoverview Utility functions for handling variables dynamic.
+ * @fileoverview Utility functions for handling typed variables.
  *
  * @author duzc2dtw@gmail.com (Du Tian Wei)
  */

core/workspace_svg.js

@@ -31,22 +31,18 @@ goog.provide('Blockly.WorkspaceSvg');
 goog.require('Blockly.blockRendering');
 goog.require('Blockly.ConnectionDB');
 goog.require('Blockly.constants');
-goog.require('Blockly.CursorSvg');
 goog.require('Blockly.Events');
 goog.require('Blockly.Events.BlockCreate');
 goog.require('Blockly.Gesture');
 goog.require('Blockly.Grid');
 goog.require('Blockly.Msg');
 goog.require('Blockly.Options');
-goog.require('Blockly.ScrollbarPair');
-goog.require('Blockly.Touch');
 goog.require('Blockly.TouchGesture');
 goog.require('Blockly.utils');
 goog.require('Blockly.utils.Coordinate');
 goog.require('Blockly.utils.dom');
 goog.require('Blockly.utils.object');
 goog.require('Blockly.utils.Rect');
-goog.require('Blockly.VariablesDynamic');
 goog.require('Blockly.Workspace');
 goog.require('Blockly.WorkspaceAudio');
 goog.require('Blockly.WorkspaceComment');

core/zoom_controls.js

@@ -27,6 +27,7 @@
 goog.provide('Blockly.ZoomControls');
 
 goog.require('Blockly.Css');
+goog.require('Blockly.Scrollbar');
 goog.require('Blockly.Touch');
 goog.require('Blockly.utils.dom');