Convert OneClickSigninBubbleViewTest to browser_tests.

chrome/browser/ui/views/sync/one_click_signin_bubble_view.h

Index: chrome/browser/ui/views/sync/one_click_signin_bubble_view.h
diff --git a/chrome/browser/ui/views/sync/one_click_signin_bubble_view.h b/chrome/browser/ui/views/sync/one_click_signin_bubble_view.h
index 78b58f8fd98c5b5b2cca7cd9b7ba7e5ede9f0917..c0ab47a972adf15c519f740cfd39fb2d75c5041e 100644
--- a/chrome/browser/ui/views/sync/one_click_signin_bubble_view.h
+++ b/chrome/browser/ui/views/sync/one_click_signin_bubble_view.h
@@ -53,6 +53,14 @@ class OneClickSigninBubbleView : public views::BubbleDelegateView,
   // method is meant to be called only from tests.
   static OneClickSigninBubbleView* view_for_testing() { return bubble_view_; }
 
+  // We normally close the bubble any time it becomes inactive but this can lead
+  // to flaky tests where unexpected UI events are triggering this behavior.
+  // Tests should call this with "false" for more consistent operation.
+  // (crbug.com/266972)
+  static void set_close_on_deactivate_for_testing(bool close) {
+    close_on_deactivate_for_testing_ = close;
+  }
+
  protected:
   // Creates a OneClickSigninBubbleView.
   OneClickSigninBubbleView(
@@ -148,6 +156,8 @@ class OneClickSigninBubbleView : public views::BubbleDelegateView,
   // The bubble, if we're showing one.
   static OneClickSigninBubbleView* bubble_view_;
 
+  static bool close_on_deactivate_for_testing_;
+
   DISALLOW_COPY_AND_ASSIGN(OneClickSigninBubbleView);
 };