chromeos: moves more ash tests to run on mash

ash/system/overview/overview_button_tray_unittest.cc

Index: ash/system/overview/overview_button_tray_unittest.cc
diff --git a/ash/system/overview/overview_button_tray_unittest.cc b/ash/system/overview/overview_button_tray_unittest.cc
index 7f5b491d1576d8067289918ae373d0808141cc86..c336802efff5ff2f2a75e6309af1647435311808 100644
--- a/ash/system/overview/overview_button_tray_unittest.cc
+++ b/ash/system/overview/overview_button_tray_unittest.cc
@@ -111,6 +111,10 @@ TEST_F(OverviewButtonTrayTest, PerformAction) {
 
 // Tests that tapping on the control will record the user action Tray_Overview.
 TEST_F(OverviewButtonTrayTest, TrayOverviewUserAction) {
+  // TODO: investigate failure in mash, http://crbug.com/696754.

[msw, 2017/03/03 01:08:10]

q: Is this bug applicable to this failure too? (this test fixture doesn't
directly instantiate ScreenRotationAnimator)

[sky, 2017/03/03 03:51:04]

Indeed you are right. I filed a new bug for this. Thanks!

+  if (WmShell::Get()->IsRunningInMash())
+    return;
+
   ASSERT_FALSE(WmShell::Get()->window_selector_controller()->IsSelecting());
 
   // Tapping on the control when there are no windows (and thus the user cannot
@@ -207,6 +211,11 @@ TEST_F(OverviewButtonTrayTest, ActiveStateOnlyDuringOverviewMode) {
 // Test that when a hide animation is aborted via deletion, that the
 // OverviewButton is still hidden.
 TEST_F(OverviewButtonTrayTest, HideAnimationAlwaysCompletes) {
+  // TODO: disabled as ScreenRotationAnimator does not work in mash,
+  // http://crbug.com/696754.
+  if (WmShell::Get()->IsRunningInMash())
+    return;
+
   WmShell::Get()->maximize_mode_controller()->EnableMaximizeModeWindowManager(
       true);