Revert "Set fallback focus to the accounts and sync dialog."

This reverts commit f7e31c9d.

Reason for revert: this seems to cause breakages in mac builders
https://ci.chromium.org/p/chromium/builders/ci/Mac10.14%20Tests/9647

Original change's description:
> Set fallback focus to the accounts and sync dialog.
>
> Set the first container as initial focus, so focus manager will search
> the first focusable item in case no other view is explicitly focused
> (e.g. with Ctrl+Shift+M, focus is set to the profile list for quick
> profile change). Setting focus inside the dialog is important for
> accessibility: when focus changes to a view inside the dialog, screen
> readers will announce the dialog to give context to the focus change.
>
> We don't need to override GetAccessibleWindowRole() any more because
> the implementation in DialogDelegateView will set the 'dialog' role for
> bubbles which have an initially focused view.
>
> Tests are altered to make up for the default focus change. Before,
> default focus was set outside the dialog and you had to advance once
> to reach the first element. Now, it's already placed on the first
> element.
>
> Bug: 1098304
> Change-Id: Ie0db18193cb224497d311c8ae864ec4e532572b6
> AX-relnotes: set focus into, and read accounts and sync dialog when open
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2475056
> Reviewed-by: Ramin Halavati <rhalavati@chromium.org>
> Commit-Queue: Jacobo Aragunde Pérez <jaragunde@igalia.com>
> Cr-Commit-Position: refs/heads/master@{#819287}

TBR=pbos@chromium.org,jkrcal@chromium.org,rhalavati@chromium.org,jaragunde@igalia.com

Change-Id: I8ad7448148905434910bd1178594e6542935ed85
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1098304
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2489882Reviewed-by: Anatoliy Potapchuk <apotapchuk@chromium.org>
Commit-Queue: Anatoliy Potapchuk <apotapchuk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819320}

chrome/browser/ui/views/profiles/profile_menu_view_base.cc

@@ -941,14 +941,6 @@ void ProfileMenuViewBase::Reset() {
                      kMenuWidth);
   layout->StartRow(1.0f, 0);
   layout->AddView(std::move(scroll_view));
-
-  // Set the first container as initial focus, so focus manager will search the
-  // first focusable item in case no other view is explicitly focused (e.g. with
-  // Ctrl+Shift+M, focus is set to the profile list for quick profile change).
-  // Setting focus inside the dialog is important for accessibility: when focus
-  // changes to a view inside the dialog, screen readers will announce the
-  // dialog to give context to the focus change.
-  SetInitiallyFocusedView(heading_container_);
 }
 
 void ProfileMenuViewBase::FocusButtonOnKeyboardOpen() {
@@ -975,6 +967,14 @@ void ProfileMenuViewBase::OnThemeChanged() {
   UpdateSyncInfoContainerBackground();
 }
 
+ax::mojom::Role ProfileMenuViewBase::GetAccessibleWindowRole() {
+  // Return |ax::mojom::Role::kDialog| which will make screen readers announce
+  // the following in the listed order:
+  // the title of the dialog, labels (if any), the focused View within the
+  // dialog (if any)
+  return ax::mojom::Role::kDialog;
+}
+
 bool ProfileMenuViewBase::HandleContextMenu(
     content::RenderFrameHost* render_frame_host,
     const content::ContextMenuParams& params) {

chrome/browser/ui/views/profiles/profile_menu_view_base.h

@@ -180,6 +180,7 @@ class ProfileMenuViewBase : public content::WebContentsDelegate,
   void Init() final;
   void WindowClosing() override;
   void OnThemeChanged() override;
+  ax::mojom::Role GetAccessibleWindowRole() override;
 
   // content::WebContentsDelegate:
   bool HandleContextMenu(content::RenderFrameHost* render_frame_host,

chrome/browser/ui/views/profiles/profile_menu_view_browsertest.cc

@@ -536,7 +536,7 @@ class ProfileMenuClickTest : public ProfileMenuClickTestBase,
     // about the histogram recorded.
     ASSERT_TRUE(profile_menu_view());
     profile_menu_view()->set_perform_menu_actions_for_testing(false);
-    AdvanceFocus(/*count=*/GetParam());
+    AdvanceFocus(/*count=*/GetParam() + 1);
     ASSERT_TRUE(GetFocusedItem());
     Click(GetFocusedItem());
     LOG(INFO) << "Clicked item at index " << GetParam();