Add @UnsupportedAppUsage annotations

For packages:
  android.graphics
  android.graphics.drawable
  android.graphics.drawable.shapes
  android.graphics.fonts
  android.graphics.pdf

This is an automatically generated CL. See go/UnsupportedAppUsage
for more details.

Exempted-From-Owner-Approval: Mechanical changes to the codebase
which have been approved by Android API council and announced on
android-eng@

Bug: 110868826
Test: m
Change-Id: I7fc1162d2c63df8751a4660607e8ce72070efed8

graphics/java/android/graphics/BitmapRegionDecoder.java

@@ -15,6 +15,7 @@
 
 package android.graphics;
 
+import android.annotation.UnsupportedAppUsage;
 import android.content.res.AssetManager;
 
 import java.io.FileDescriptor;
@@ -165,6 +166,7 @@ public final class BitmapRegionDecoder {
 
         This can be called from JNI code.
     */
+    @UnsupportedAppUsage
     private BitmapRegionDecoder(long decoder) {
         mNativeBitmapRegionDecoder = decoder;
         mRecycled = false;
@@ -267,6 +269,7 @@ public final class BitmapRegionDecoder {
     private static native int nativeGetHeight(long lbm);
     private static native void nativeClean(long lbm);
 
+    @UnsupportedAppUsage
     private static native BitmapRegionDecoder nativeNewInstance(
             byte[] data, int offset, int length, boolean isShareable);
     private static native BitmapRegionDecoder nativeNewInstance(