[DevTools] proper cleanup BlackboxManager on targetRemoved

third_party/WebKit/Source/devtools/front_end/bindings/BlackboxManager.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 /**
  * @implements {SDK.TargetManager.Observer}
  * @unrestricted
  */
 Bindings.BlackboxManager = class {
   /**
    * @param {!Bindings.DebuggerWorkspaceBinding} debuggerWorkspaceBinding
@@ skipping 40 matching lines @@
     var debuggerModel = SDK.DebuggerModel.fromTarget(target);
     if (debuggerModel)
       this._setBlackboxPatterns(debuggerModel);
   }
 
   /**
    * @override
    * @param {!SDK.Target} target
    */
   targetRemoved(target) {
+    var debuggerModel = SDK.DebuggerModel.fromTarget(target);
+    if (debuggerModel) {
+      this._debuggerModelData.delete(debuggerModel);
+      this._isBlackboxedURLCache.clear();
+    }
   }
 
   /**
    * @param {!SDK.DebuggerModel} debuggerModel
    * @return {!Promise<boolean>}
    */
   _setBlackboxPatterns(debuggerModel) {
     var regexPatterns = Common.moduleSetting('skipStackFramesPattern').getAsArray();
     var patterns = /** @type {!Array<string>} */ ([]);
     for (var item of regexPatterns) {
@@ skipping 347 matching lines @@
       if (scheme === 'chrome-extension')
         prefix += parsedURL.host + '\\b';
       prefix += '.*';
     }
     return prefix + name.escapeForRegExp() + (url.endsWith(name) ? '$' : '\\b');
   }
 };
 
 /** @type {!Bindings.BlackboxManager} */
 Bindings.blackboxManager;