Fix Translate Desktop UI Return action

Ensure that the focus is traversing on the language in which the page is
translated.

Bug: 1105807
Change-Id: I14a2b7a957c5ad8b581ca25a0d89a406ba3bfc52
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2300321Reviewed-by: anthonyvd <anthonyvd@chromium.org>
Commit-Queue: Megan Jablonski <megjablon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#790082}

chrome/browser/ui/views/translate/translate_bubble_view.cc

@@ -379,7 +379,6 @@ bool TranslateBubbleView::AcceleratorPressed(
       break;
     }
     case TranslateBubbleModel::VIEW_STATE_TRANSLATING:
-      break;
     case TranslateBubbleModel::VIEW_STATE_AFTER_TRANSLATE: {
       if (accelerator.key_code() == ui::VKEY_RETURN) {
         ShowOriginal();
@@ -591,12 +590,14 @@ views::View* TranslateBubbleView::GetCurrentView() const {
 void TranslateBubbleView::Translate() {
   model_->Translate();
   model_->SetViewState(TranslateBubbleModel::VIEW_STATE_TRANSLATING);
+  SwitchView(TranslateBubbleModel::VIEW_STATE_TRANSLATING);
   translate::ReportUiAction(translate::TRANSLATE_BUTTON_CLICKED);
 }
 
 void TranslateBubbleView::ShowOriginal() {
   model_->RevertTranslation();
   model_->SetViewState(TranslateBubbleModel::VIEW_STATE_BEFORE_TRANSLATE);
+  SwitchView(TranslateBubbleModel::VIEW_STATE_BEFORE_TRANSLATE);
   translate::ReportUiAction(translate::SHOW_ORIGINAL_BUTTON_CLICKED);
 }