DevTools: restore shortcuts to switch devtool panel left/right

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

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 207 matching lines @@
     this._drawerSplitWidget.setResizable(!minimized);
   }
 
   /**
    * @return {boolean}
    */
   isDrawerMinimized() {
     return this._drawerSplitWidget.isSidebarMinimized();
   }
 
+  /**
+   * @param {!Event} event
+   */
   _keyDown(event) {
-    if (!UI.KeyboardShortcut.eventHasCtrlOrMeta(event))
+    var keyboardEvent = /** @type {!KeyboardEvent} */ (event);
+    if (!UI.KeyboardShortcut.eventHasCtrlOrMeta(keyboardEvent))
       return;
 
-    var keyboardEvent = /** @type {!KeyboardEvent} */ (event);
     // Ctrl/Cmd + 1-9 should show corresponding panel.
     var panelShortcutEnabled = Common.moduleSetting('shortcutPanelSwitch').get();
     if (panelShortcutEnabled && !event.shiftKey && !event.altKey) {
       var panelIndex = -1;
       if (event.keyCode > 0x30 && event.keyCode < 0x3A)
         panelIndex = event.keyCode - 0x31;
       else if (
           event.keyCode > 0x60 && event.keyCode < 0x6A &&
           keyboardEvent.location === KeyboardEvent.DOM_KEY_LOCATION_NUMPAD)
         panelIndex = event.keyCode - 0x61;
       if (panelIndex !== -1) {
         var panelName = this._tabbedPane.allTabs()[panelIndex];
         if (panelName) {
           if (!UI.Dialog.hasInstance() && !this._currentPanelLocked)
             this.showPanel(panelName);
           event.consume(true);
         }
       }
     }
+
+    if (event.key === '[') {
+      this._tabbedPane.selectPrevTab();
+      event.consume(true);
+    }
+
+    if (event.key === ']') {
+      this._tabbedPane.selectNextTab();
+      event.consume(true);
+    }
   }
 
   /**
    * @override
    */
   onResize() {
     UI.Dialog.modalHostRepositioned();
   }
 
   /**
@@ skipping 51 matching lines @@
    * @return {boolean}
    */
   handleAction(context, actionId) {
     if (UI.inspectorView.drawerVisible())
       UI.inspectorView._closeDrawer();
     else
       UI.inspectorView._showDrawer(true);
     return true;
   }
 };