[Magnifier-62] Deprecate constructor

The CL deprecates the old constructor for Magnifier instances in favor
of the usage of builder Magnifier#Builder.

Bug: 116116502
Test: atest CtsWidgetTestCases:android.widget.cts.MagnifierTest
Change-Id: I3daa9f066c77144e9d5c62bc666ecd37041f4bbb

api/current.txt

@@ -52964,7 +52964,7 @@ package android.widget {
   }
 
   public final class Magnifier {
-    ctor public Magnifier(android.view.View);
+    ctor public deprecated Magnifier(android.view.View);
     method public void dismiss();
     method public float getCornerRadius();
     method public int getDefaultHorizontalSourceToMagnifierOffset();

core/java/android/widget/Editor.java

@@ -379,7 +379,8 @@ public class Editor {
                 com.android.internal.R.bool.config_enableHapticTextHandle);
 
         if (FLAG_USE_MAGNIFIER) {
-            mMagnifierAnimator = new MagnifierMotionAnimator(new Magnifier(mTextView));
+            final Magnifier magnifier = new Magnifier.Builder(mTextView).build();
+            mMagnifierAnimator = new MagnifierMotionAnimator(magnifier);
         }
     }
 

core/java/android/widget/Magnifier.java

@@ -119,8 +119,9 @@ public final class Magnifier {
      *
      * @param view the view for which this magnifier is attached
      *
-     * @see Builder
+     * @deprecated Please use {@link Builder} instead
      */
+    @Deprecated
     public Magnifier(@NonNull View view) {
         this(new Builder(view));
     }