Reland of DevTools: automatically populate 'More tools' submenu with the drawer views.

third_party/WebKit/Source/devtools/front_end/sources/module.json

 {
     "extensions": [
         {
             "type": "@WebInspector.PanelFactory",
             "name": "sources",
             "title": "Sources",
             "order": 30,
             "className": "WebInspector.SourcesPanelFactory"
         },
         {
@@ skipping 129 matching lines @@
                     "shortcut": "Ctrl+F8"
                 },
                 {
                     "platform": "mac",
                     "shortcut": "Meta+F8"
                 }
             ]
         },
         {
             "type": "context-menu-item",
-            "location": "mainMenu/navigate",
-            "actionId": "sources.search.toggle"
-        },
-        {
-            "type": "context-menu-item",
             "location": "navigatorMenu/navigate",
             "actionId": "sources.go-to-source"
         },
         {
             "type": "@WebInspector.Revealer",
             "contextTypes": ["WebInspector.UILocation"],
             "className": "WebInspector.SourcesPanel.UILocationRevealer"
         },
         {
             "type": "@WebInspector.Revealer",
@@ skipping 225 matching lines @@
         "addSourceMapURLDialog.css",
         "uiList.css",
         "navigatorView.css",
         "revisionHistory.css",
         "serviceWorkersSidebar.css",
         "sourcesPanel.css",
         "sourcesSearch.css",
         "sourcesView.css"
     ]
 }