Index: third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js |
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js b/third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js |
index 15604bee6d14ab7d1805ad9885760e330385c076..d16d294c3ee80bd85af3d0dbea7ef9899c8c9741 100644 |
--- a/third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js |
+++ b/third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js |
@@ -1377,6 +1377,9 @@ WebInspector.ExtensibleTabbedPaneController.prototype = { |
_tabSelected: function(event) |
{ |
var tabId = /** @type {string} */ (event.data.tabId); |
+ if (!this._extensions.has(tabId)) |
+ return; |
+ |
this._viewForId(tabId); |
var descriptor = this._extensions.get(tabId).descriptor(); |