DevTools: the sources debug toolbar buttons should not be drag targets

third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js

Index: third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js b/third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js
index dea0e9b2d84ea163f37db49d02602eb3ec527d9b..a7ee15c5d63e92bab57322aff73fa26da6ce5394 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js
+++ b/third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js
@@ -192,6 +192,13 @@ UI.Toolbar = class {
     return UI.Toolbar.createActionButton(/** @type {!UI.Action} */ (action));
   }
 
+  /**
+   * @return {!Element}
+   */
+  gripElementForResize() {
+    return this._contentElement;
+  }
+
   /**
    * @param {boolean=} reverse
    * @param {boolean=} growVertically