DevTools: use eventListener arrays to avoid memory leaks in dispose methods

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

Index: third_party/WebKit/Source/devtools/front_end/bindings/FileSystemWorkspaceBinding.js
diff --git a/third_party/WebKit/Source/devtools/front_end/bindings/FileSystemWorkspaceBinding.js b/third_party/WebKit/Source/devtools/front_end/bindings/FileSystemWorkspaceBinding.js
index 957a49a939a3e7e016bde6288d5ede3f7c4f187a..352a45300b7f4fdc57623a4ab629a738959f6f0b 100644
--- a/third_party/WebKit/Source/devtools/front_end/bindings/FileSystemWorkspaceBinding.js
+++ b/third_party/WebKit/Source/devtools/front_end/bindings/FileSystemWorkspaceBinding.js
@@ -37,9 +37,11 @@ WebInspector.FileSystemWorkspaceBinding = function(isolatedFileSystemManager, wo
 {
     this._isolatedFileSystemManager = isolatedFileSystemManager;
     this._workspace = workspace;
-    this._isolatedFileSystemManager.addEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemAdded, this._fileSystemAdded, this);
-    this._isolatedFileSystemManager.addEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemRemoved, this._fileSystemRemoved, this);
-    this._isolatedFileSystemManager.addEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemFilesChanged, this._fileSystemFilesChanged, this);
+    this._eventListeners = [
+        this._isolatedFileSystemManager.addEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemAdded, this._fileSystemAdded, this),
+        this._isolatedFileSystemManager.addEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemRemoved, this._fileSystemRemoved, this),
+        this._isolatedFileSystemManager.addEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemFilesChanged, this._fileSystemFilesChanged, this)
+    ];
     /** @type {!Map.<string, !WebInspector.FileSystemWorkspaceBinding.FileSystem>} */
     this._boundFileSystems = new Map();
 }
@@ -153,9 +155,7 @@ WebInspector.FileSystemWorkspaceBinding.prototype = {
 
     dispose: function()
     {
-        this._isolatedFileSystemManager.removeEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemAdded, this._fileSystemAdded, this);
-        this._isolatedFileSystemManager.removeEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemRemoved, this._fileSystemRemoved, this);
-        this._isolatedFileSystemManager.dispose();
+        WebInspector.EventTarget.removeEventListeners(this._eventListeners);
         for (var fileSystem of this._boundFileSystems.values()) {
             fileSystem.dispose();
             this._boundFileSystems.remove(fileSystem._fileSystem.path());