DevTools: eliminate ToolbarButton.setState method; cleanup toolbar.css

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

 {
     "extensions": [
         {
             "type": "view",
             "location": "panel",
             "id": "sources",
             "title": "Sources",
             "order": 30,
             "className": "WebInspector.SourcesPanel"
         },
         {
             "type": "@WebInspector.ContextMenu.Provider",
             "contextTypes": ["WebInspector.UISourceCode", "WebInspector.UILocation", "WebInspector.RemoteObject", "WebInspector.NetworkRequest", "WebInspector.UISourceCodeFrame"],
             "className": "WebInspector.SourcesPanel"
         },
         {
             "type": "@WebInspector.ActionDelegate",
             "category": "Debugger",
             "actionId": "debugger.toggle-pause",
             "iconClass": "pause-toolbar-item",
+            "toggledIconClass": "resume-toolbar-item",
             "className": "WebInspector.SourcesPanel.RevealingActionDelegate",
             "contextTypes": ["WebInspector.SourcesPanel", "WebInspector.ShortcutRegistry.ForwardedShortcut"],
             "options": [
                 { "value": true, "title": "Pause script execution" },
                 { "value": false, "title": "Resume script execution" }
             ],
             "bindings": [
                 {
                     "platform": "windows,linux",
                     "shortcut": "F8 Ctrl+\\"
@@ skipping 90 matching lines @@
                 {
                     "platform": "windows,linux",
                     "shortcut": "Ctrl+Shift+F"
                 }
             ]
         },
         {
             "type": "@WebInspector.ActionDelegate",
             "category": "Debugger",
             "actionId": "debugger.toggle-breakpoints-active",
-            "iconClass": "breakpoint-toolbar-item",
+            "iconClass": "deactivate-breakpoint-toolbar-item",
+            "toggledIconClass": "breakpoint-toolbar-item",
             "className": "WebInspector.SourcesPanel.DebuggingActionDelegate",
             "contextTypes": ["WebInspector.SourcesPanel"],
             "options": [
                 { "value": true, "title": "Deactivate breakpoints" },
                 { "value": false, "title": "Activate breakpoints" }
             ],
             "bindings": [
                 {
                     "platform": "windows,linux",
                     "shortcut": "Ctrl+F8"
@@ skipping 448 matching lines @@
         "fileBasedSearchResultsPane.css",
         "navigatorTree.css",
         "navigatorView.css",
         "revisionHistory.css",
         "serviceWorkersSidebar.css",
         "sourcesPanel.css",
         "sourcesSearch.css",
         "sourcesView.css"
     ]
 }