Fix flaky linux panel tests related to active state checks

chrome/browser/ui/panels/base_panel_browser_test.h

Index: chrome/browser/ui/panels/base_panel_browser_test.h
diff --git a/chrome/browser/ui/panels/base_panel_browser_test.h b/chrome/browser/ui/panels/base_panel_browser_test.h
index e9fbebe1fd8b9e7f6e64a2b46f298d8b36a9fa5c..4ada135809ee96e5760ea5c67fcb94318ecf0a36 100644
--- a/chrome/browser/ui/panels/base_panel_browser_test.h
+++ b/chrome/browser/ui/panels/base_panel_browser_test.h
@@ -41,7 +41,7 @@ class BasePanelBrowserTest : public InProcessBrowserTest {
   // Linux bots use icewm which activate windows in ways that break
   // certain panel tests. Skip those tests when running on the bots.
   // We do not disable the tests to make it easy for developers to run
-  // them locally.
+  // them locally. [Icewm always activates a window when shown.]
   bool SkipTestIfIceWM();
 
   // Gnome running compiz refuses to activate a window that was initially