DevTools: ensure all auto-start modules are loaded before starting the app.

Change-Id: I9dcdabed9e8e255bfb9911234b5c2c2a37d57fd1
Reviewed-on: https://chromium-review.googlesource.com/c/1349501
Reviewed-by: Aleksey Kozyatinskiy <[email protected]>
Commit-Queue: Pavel Feldman <[email protected]>
Cr-Original-Commit-Position: refs/heads/master@{#610722}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 89caaba1c8fadd39eb064b5dc2f9314436acbdea
diff --git a/front_end/main/Main.js b/front_end/main/Main.js
index 297b32b..646164f 100644
--- a/front_end/main/Main.js
+++ b/front_end/main/Main.js
@@ -60,7 +60,7 @@
 
   async _loaded() {
     console.timeStamp('Main._loaded');
-    await Runtime.runtimeReady();
+    await Runtime.appStarted();
     Runtime.setPlatform(Host.platform());
     InspectorFrontendHost.getPreferences(this._gotPreferences.bind(this));
   }