[DevTools] Add Toolbox page to undocked DevTools frontend.

Source/devtools/scripts/frontend_modules.json

Index: Source/devtools/scripts/frontend_modules.json
diff --git a/Source/devtools/scripts/frontend_modules.json b/Source/devtools/scripts/frontend_modules.json
index c2b0bdb6cad636832a05fad9aa52b5a55a93f19b..86d1e9f6625568f17308fee854adc45db96b3aa5 100644
--- a/Source/devtools/scripts/frontend_modules.json
+++ b/Source/devtools/scripts/frontend_modules.json
@@ -132,9 +132,16 @@
         ]
     },
     {
-        "name": "components",
+        "name": "toolbox",
         "dependencies": ["sdk", "ui"],
         "sources": [
+            "toolbox/ResponsiveDesignView.js"
+        ]
+    },
+    {
+        "name": "components",
+        "dependencies": ["sdk", "ui", "toolbox"],
+        "sources": [
             "components/CookiesTable.js",
             "components/DOMBreakpointsSidebarPane.js",
             "components/DOMPresentationUtils.js",
@@ -161,6 +168,7 @@
             "components/SettingsUI.js",
             "components/ShortcutsScreen.js",
             "components/TimelineGrid.js",
+            "components/Toolbox.js",
             "components/WorkerFrontendManager.js"
         ]
     },
@@ -172,13 +180,6 @@
         ]
     },
     {
-        "name": "responsive_design",
-        "dependencies": ["components"],
-        "sources": [
-            "ResponsiveDesignView.js"
-        ]
-    },
-    {
         "name": "source_frame",
         "dependencies": ["components"],
         "sources": [
@@ -457,7 +458,6 @@
         "dependencies": [
             "elements",
             "host_stub",
-            "responsive_design",
             "screencast",
             "settings",
             "sources",
@@ -475,6 +475,7 @@
             "common",
             "sdk",
             "ui",
+            "toolbox",
             "components",
             "source_frame",
             "elements",