Use javascript strict mode throughout a number of net-internals files.

chrome/browser/resources/net_internals/main.js

 // Copyright (c) 2011 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.
 
 /**
  * Dictionary of constants (initialized by browser, updated on load log).
  */
 var LogEventType = null;
 var LogEventPhase = null;
 var ClientInfo = null;
@@ skipping 74 matching lines @@
                              HttpCacheView.getInstance(), false, true);
   categoryTabSwitcher.addTab('tab-handle-import', ImportView.getInstance(),
                              false, true);
   categoryTabSwitcher.addTab('tab-handle-export', ExportView.getInstance(),
                              false, true);
   categoryTabSwitcher.addTab('tab-handle-capture', CaptureView.getInstance(),
                              false, true);
   categoryTabSwitcher.addTab('tab-handle-service-providers',
                              ServiceProvidersView.getInstance(),
                              false, cr.isWindows);
-  categoryTabSwitcher.addTab('tab-handle-tests', new TestView(), false, true);
+  categoryTabSwitcher.addTab('tab-handle-tests', TestView.getInstance(),
+                             false, true);
   categoryTabSwitcher.addTab('tab-handle-hsts', HSTSView.getInstance(),
                              false, true);
   categoryTabSwitcher.addTab('tab-handle-http-throttling',
                              HttpThrottlingView.getInstance(), false, true);
-  categoryTabSwitcher.addTab('tab-handle-logs', new LogsView(), false,
+  categoryTabSwitcher.addTab('tab-handle-logs', LogsView.getInstance(), false,
                              cr.isChromeOS);
   categoryTabSwitcher.addTab('tab-handle-prerender',
                              PrerenderView.getInstance(), false, true);
 
   // Build a map from the anchor name of each tab handle to its "tab ID".
   // We will consider navigations to the #hash as a switch tab request.
   var anchorMap = {};
   var tabIds = categoryTabSwitcher.getAllTabIds();
   for (var i = 0; i < tabIds.length; ++i) {
     var aNode = $(tabIds[i]);
@@ skipping 347 matching lines @@
     }
   }
 
   if (!parsedDump)
     return 'Unable to parse log dump as JSON file.';
   return loadLogDump(parsedDump, fileName);
 };
 
 // End of anonymous namespace.
 })();