[Android] Photo Picker: Stop using deprecated BitmapDrawable ctor.

There's a newer one that handles target density properly.
https://developer.android.com/reference/android/graphics/drawable/BitmapDrawable.html#BitmapDrawable(android.graphics.Bitmap)

Bug: 656015
Change-Id: Idd90cd3c31669ee954a269646e61b094a631d97d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1965331Reviewed-by: Boris Sazonov <bsazonov@chromium.org>
Commit-Queue: Finnur Thorarinsson <finnur@chromium.org>
Cr-Commit-Position: refs/heads/master@{#725479}

chrome/android/java/src/org/chromium/chrome/browser/photo_picker/PickerBitmapView.java

@@ -408,7 +408,8 @@ public class PickerBitmapView extends SelectableItemView<PickerBitmap> {
             final AnimationDrawable animationDrawable = new AnimationDrawable();
             for (int i = 0; i < thumbnails.size(); ++i) {
                 animationDrawable.addFrame(
-                        new BitmapDrawable(thumbnails.get(i)), IMAGE_FRAME_DISPLAY);
+                        new BitmapDrawable(mContext.getResources(), thumbnails.get(i)),
+                        IMAGE_FRAME_DISPLAY);
             }
             animationDrawable.setOneShot(false);
             mIconView.setImageDrawable(animationDrawable);