Ensure that an activity is activated when overview mode is exited

athena/wm/split_view_controller.cc

Index: athena/wm/split_view_controller.cc
diff --git a/athena/wm/split_view_controller.cc b/athena/wm/split_view_controller.cc
index f951b868846e18f2216c3486220cf067d7a7007e..379cc483f4ca2cb2e462f32597e1c85be8feeb86 100644
--- a/athena/wm/split_view_controller.cc
+++ b/athena/wm/split_view_controller.cc
@@ -97,6 +97,12 @@ void SplitViewController::ActivateSplitMode(aura::Window* left,
     }
   }
 
+  to_hide_.clear();
+  if (left_window_ && left_window_ != left && left_window_ != right)
+    to_hide_.push_back(left_window_);
+  if (right_window_ && right_window_ != left && right_window_ != right)
+    to_hide_.push_back(right_window_);
+
   SetState(ACTIVE);
   right_window_ = right;
   left_window_ = left;
@@ -157,16 +163,20 @@ void SplitViewController::UpdateLayout(bool animate) {
   CHECK(left_window_);
   CHECK(right_window_);
 
-  // Splitview can be activated from SplitViewController::ActivateSplitMode or
-  // SplitViewController::ScrollEnd. Additionally we don't want to rotate the
-  // screen while engaging splitview (i.e. state_ == SCROLLING).
-  if (state_ == INACTIVE && !animate) {
-    if (!wm::IsActiveWindow(left_window_))
-      left_window_->Hide();
-    if (!wm::IsActiveWindow(right_window_))
-      right_window_->Hide();
-    SetWindowTransforms(gfx::Transform(), gfx::Transform(), false);
-    return;
+  if (!animate) {
+    for (size_t i = 0; i < to_hide_.size(); ++i)
+      to_hide_[i]->Hide();
+    to_hide_.clear();
+
+    if (state_ == INACTIVE) {
+      if (!wm::IsActiveWindow(left_window_))
+        left_window_->Hide();
+      if (!wm::IsActiveWindow(right_window_))
+        right_window_->Hide();
+
+      SetWindowTransforms(gfx::Transform(), gfx::Transform(), false);
+      return;
+    }
   }
 
   left_window_->Show();