Updating DevTools links - top nav

chrome/common/extensions/docs/templates/json/chrome_sidenav.json

 [
   {
     "title": "Devtools",
     "items": [
       {
         "title": "Learn Basics",
         "items": [
           {
             "title": "Overview",
             "href": "/devtools/index"
           },
           {
-            "title": "Authoring & Development Workflow",
+            "title": "Development Workflow",
             "href": "/devtools/docs/authoring-development-workflow"
           },
           {
             "title": "Using the Console",
             "href": "/devtools/docs/console"
           },
           {
             "title": "Tips & Tricks",
             "href": "/devtools/docs/tips-and-tricks"
           },
@@ skipping 22 matching lines @@
         ]
       },
       {
         "title": "Use Tools",
         "items": [
           {
             "title": "Inspecting & Tweaking",
             "href": "/devtools/docs/dom-and-styles",
             "items": [
               {
-                "title": "Editing Styles & DOM",
-                "href": "/devtools/docs/elements"
+                "title": "Editing Styles and the DOM",
+                "href": "/devtools/docs/dom-and-styles"
               },
               {
                 "title": "Working with CSS Preprocessors",
                 "href": "/devtools/docs/css-preprocessors"
               },
               {
                 "title": "Managing Application Storage",
                 "href": "/devtools/docs/resource-panel"
               }
             ]
           },
           {
             "title": "Debugging JavaScript",
             "href": "/devtools/docs/javascript-debugging"
           },
           {
             "title": "Mobile Emulation",
             "href": "/devtools/docs/mobile-emulation"
           },
           {
             "title": "Remote Debugging on Android",
             "href": "/devtools/docs/remote-debugging"
+          },
+          {
+            "title": "Saving Changes with Workspaces",
+            "href": "/devtools/docs/workspaces"
           }
         ]
       },
       {
         "title": "Performance & Profiling",
         "items": [
           {
             "title": "Evaluating Network Performance",
             "href": "/devtools/docs/network"
           },
           {
             "title": "Using the Timeline",
             "href": "/devtools/docs/timeline"
           },
           {
-            "title": "Timeline Demo: Finding Forced Synchronous Layouts",
+            "title": "Timeline Demo: Layout Thrashing",
             "href": "/devtools/docs/demos/too-much-layout/index"
           },
           {
             "title": "Profiling JavaScript Performance",
             "href": "/devtools/docs/cpu-profiling"
           },
           {
             "title": "JavaScript Memory Profiling",
             "href": "/devtools/docs/javascript-memory-profiling",
             "items": [
               {
                 "title": "JavaScript Memory Profiling",
                 "href": "/devtools/docs/javascript-memory-profiling"
               },
               {
                 "title": "Demos",
                 "href": "/devtools/docs/heap-profiling-summary"
               }
             ]
-          },
-          {
-            "title": "Setting Up a Clean Testing Environment",
-            "href": "/devtools/docs/clean-testing-environment"
           }
         ]
       },
       {
         "title": "Reference",
         "items": [
           {
             "title": "Console API Reference",
             "href": "/devtools/docs/console-api"
           },
@@ skipping 868 matching lines @@
                 "title": "Articles",
                 "href": "/webstore/articles"
               }
             ]
           }
         ]
       }
     ]
   }
 ]