Refine logic about controlling transient bars

- Use copied InsetsSourceControl to prevent the leash from being
  released while the control gets revoked while playing transient
  bar animations.
- Start the animation after mAnimationControl gets assigned to prevent
  NullPointerException.
- Let SystemUI to change the bar mode to transient mode before WM
  plays the transient bar animation.
- Remove a redundunt call to the super method.
- Fix InsetsPolicyTest
- Fix InsetsStateControllerTest
- Fix misc things

Bug: 118118435
Test: Manually swipe to show transient bars many times.
Test: atest InsetsSourceProviderTest InsetsStateControllerTest
            InsetsPolicyTest WindowStateTests CommandQueueTest
            RegisterStatusBarResultTest InsetsFlagsTest
            LightBarControllerTest RegisterStatusBarResultTest
            ViewRootImplTest DisplayPolicyInsetsTests
            DisplayPolicyTests TaskSnapshotSurfaceTest
            InsetsAnimationControlImplTest
Change-Id: I7d445b7dc6f47a64048937cd439bdd5ffa7fa3a3

2 files changed, 2 insertions, 4 deletions

diff --git a/core/java/android/view/InsetsSource.java b/core/java/android/view/InsetsSource.java
index d4961eab7473..6caa4fed6409 100644
--- a/core/java/android/view/InsetsSource.java
+++ b/core/java/android/view/InsetsSource.java
@@ -198,7 +198,7 @@ public class InsetsSource implements Parcelable {
         return "InsetsSource: {"
                 + "mType=" + InsetsState.typeToString(mType)
                 + ", mFrame=" + mFrame.toShortString()
-                + ", mVisible" + mVisible
+                + ", mVisible=" + mVisible
                 + "}";
     }
 
diff --git a/core/java/android/view/WindowInsetsController.java b/core/java/android/view/WindowInsetsController.java
index f501de91b3b7..ea8e73885980 100644
--- a/core/java/android/view/WindowInsetsController.java
+++ b/core/java/android/view/WindowInsetsController.java
@@ -16,8 +16,6 @@
 
 package android.view;
 
-import static android.view.WindowInsets.Type.ime;
-
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
@@ -148,7 +146,7 @@ public interface WindowInsetsController {
      * @param types The {@link InsetsType}s the application has requested to control.
      * @param durationMillis Duration of animation in
      *                       {@link java.util.concurrent.TimeUnit#MILLISECONDS}, or -1 if the
-     *                       animation doesn't have a predetermined duration.T his value will be
+     *                       animation doesn't have a predetermined duration. This value will be
      *                       passed to {@link InsetsAnimation#getDurationMillis()}
      * @param interpolator The interpolator used for this animation, or {@code null} if this
      *                     animation doesn't follow an interpolation curve. This value will be