Add --disable-session-crashed-bubble (#2321)

#2311 (comment)

For development focused browser launches it's typically not useful to
get extra warnings that the previous session crashed. Add a flag to
disable the startup bubble and treat separate launches as independent.

Author: natebosch

pkgs/browser_launcher/CHANGELOG.md

@@ -1,6 +1,7 @@
 ## 1.2.0-wip
 
-- Add `--test-type` flag when launching chrome to prevent some warnings.
+- Add `--test-type` and `--disable-session-crashed-bubble` flags when launching
+  chrome to prevent some warnings.
 
 ## 1.1.3
 

pkgs/browser_launcher/lib/src/chrome.dart

@@ -121,6 +121,9 @@ class Chrome {
       // Prevent warnings for using flags that are not recommended for general
       // browsing but are applicable for use in dev-focused workflows.
       '--test-type',
+      // Dev runs of the browser should be considered independent of one
+      // another, don't announce when the previous session crashed.
+      '--disable-session-crashed-bubble',
     ];
     if (headless) {
       args.add('--headless');