Re-enable SpokenFeedbackTest.SpeakingTextUnderMouseForShelfItem

Removes opening of web page which appears to be causing flakes according to logs.

TBR=dtseng@chromium.org

Fixed: 1065877
Change-Id: Ie80e84bfd1df56bff60d4d55292c3a8825c850d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2210656Reviewed-by: David Tseng <dtseng@chromium.org>
Commit-Queue: David Tseng <dtseng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#770771}

chrome/browser/chromeos/accessibility/spoken_feedback_browsertest.cc

@@ -371,21 +371,12 @@ IN_PROC_BROWSER_TEST_P(SpokenFeedbackTest, ShelfIconFocusForward) {
 
 // Verifies that speaking text under mouse works for Shelf button and voice
 // announcements should not be stacked when mouse goes over many Shelf buttons
-IN_PROC_BROWSER_TEST_P(SpokenFeedbackTest,
-                       DISABLED_SpeakingTextUnderMouseForShelfItem) {
+IN_PROC_BROWSER_TEST_P(SpokenFeedbackTest, SpeakingTextUnderMouseForShelfItem) {
   // Add the ShelfItem to the ShelfModel after enabling the ChromeVox. Because
   // when an extension is enabled, the ShelfItems which are not recorded as
   // pinned apps in user preference will be removed.
   EnableChromeVox();
 
-  sm_.Call([this]() {
-    ui_test_utils::NavigateToURL(browser(),
-                                 GURL("data:text/html;charset=utf-8,<button "
-                                      "autofocus>Click me</button>"));
-  });
-
-  sm_.ExpectSpeech("Click me");
-
   sm_.Call([this]() {
     // Add three Shelf buttons. Wait for the change on ShelfModel to reach ash.
     ChromeLauncherController* controller = ChromeLauncherController::instance();