Don't use rotation to determine orientation

Looking more closely at documentation, rotation doesn't work as I
originally thought. ROTATION_0 is a device's *natural* resting state
which is portrait on phones but can differ for tablets or foldables.

The fix for this is to use the config value.

Test: manual - check that bubbles layout correctly on large tablet
Bug: 217211205
Change-Id: I3efc296d69d045be431b176f7acc71952b3f7bab

libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/BubbleController.java

@@ -423,7 +423,6 @@ public class BubbleController {
                             WindowContainerTransaction t) {
                         // This is triggered right before the rotation is applied
                         if (fromRotation != toRotation) {
-                            mBubblePositioner.setRotation(toRotation);
                             if (mStackView != null) {
                                 // Layout listener set on stackView will update the positioner
                                 // once the rotation is applied

libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/BubblePositioner.java

@@ -20,6 +20,7 @@ import static java.lang.annotation.RetentionPolicy.SOURCE;
 
 import android.annotation.IntDef;
 import android.content.Context;
+import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.graphics.Insets;
 import android.graphics.PointF;
@@ -112,10 +113,6 @@ public class BubblePositioner {
         update();
     }
 
-    public void setRotation(int rotation) {
-        mRotation = rotation;
-    }
-
     /**
      * Available space and inset information. Call this when config changes
      * occur or when added to a window.
@@ -273,7 +270,8 @@ public class BubblePositioner {
 
     /** @return whether the device is in landscape orientation. */
     public boolean isLandscape() {
-        return mRotation == Surface.ROTATION_90 || mRotation == Surface.ROTATION_270;
+        return mContext.getResources().getConfiguration().orientation
+                == Configuration.ORIENTATION_LANDSCAPE;
     }
 
     /** @return whether the screen is considered large. */