Adding content push button behind flag to OAV.

Tested: TaplTestsNexus:testOverviewActions()
Change-Id: I83bc6e5033e2292776c927fba363214f347e01ce
diff --git a/quickstep/res/layout/overview_actions_container.xml b/quickstep/res/layout/overview_actions_container.xml
index 258f24a..d15a2d2 100644
--- a/quickstep/res/layout/overview_actions_container.xml
+++ b/quickstep/res/layout/overview_actions_container.xml
@@ -56,7 +56,7 @@
             android:visibility="gone" />
 
         <Space
-            android:id="@+id/share_space"
+            android:id="@+id/oav_three_button_space"
             android:layout_width="0dp"
             android:layout_height="1dp"
             android:layout_weight="1"