Merge "Fixing broken tests on 2 and 3 button devices." into ub-launcher3-rvc-dev

quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java

@@ -121,7 +121,8 @@ public class FallbackRecentsTest {
                     UiDevice.getInstance(getInstrumentation()).executeShellCommand(
                             getLauncherCommand(getLauncherInMyProcess()));
                     // b/143488140
-                    mLauncher.pressHome();
+                    mDevice.pressHome();
+                    mDevice.waitForIdle();
                 }
             }
         };