Desktop PWAs: Create fewer apps in WebAppBrowserTest.HasMinimalUiButtons

WebAppBrowserTest.HasMinimalUiButtons created an opened 5 PWAs.

It now only creates and opens 3 PWAs, to avoid flaky timeout failures.

Bug: 1034029
Change-Id: I9de602007f2f9648dc8dd1f1c5fd9f1c6f15d065
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1975375
Commit-Queue: Eric Willigers <ericwilligers@chromium.org>
Reviewed-by: Alan Cutter <alancutter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#726301}

chrome/browser/ui/web_applications/web_app_browsertest.cc

@@ -76,8 +76,7 @@ IN_PROC_BROWSER_TEST_P(WebAppBrowserTest, AutoGeneratedUserThemeCrash) {
   LaunchWebAppBrowser(app_id);
 }
 
-// Flaky. http://crbug.com/1034029
-IN_PROC_BROWSER_TEST_P(WebAppBrowserTest, DISABLED_HasMinimalUiButtons) {
+IN_PROC_BROWSER_TEST_P(WebAppBrowserTest, HasMinimalUiButtons) {
   int index = 0;
   auto has_buttons = [this, &index](DisplayMode display_mode,
                                     bool open_as_window) -> bool {
@@ -96,15 +95,10 @@ IN_PROC_BROWSER_TEST_P(WebAppBrowserTest, DISABLED_HasMinimalUiButtons) {
     return app_browser->app_controller()->HasMinimalUiButtons();
   };
 
-  EXPECT_TRUE(has_buttons(DisplayMode::kBrowser,
-                          /*open_as_window=*/true));
   EXPECT_TRUE(has_buttons(DisplayMode::kMinimalUi,
                           /*open_as_window=*/true));
   EXPECT_FALSE(has_buttons(DisplayMode::kStandalone,
                            /*open_as_window=*/true));
-  EXPECT_FALSE(has_buttons(DisplayMode::kFullscreen,
-                           /*open_as_window=*/true));
-
   EXPECT_FALSE(has_buttons(DisplayMode::kMinimalUi,
                            /*open_as_window=*/false));
 }