Change how Java Bitmaps are accessed in a few places

Stop assuming that a Java Bitmap has a SkBitmap* that
has some externally managed lifecycle, and instead switch
a bunch of users to accessing the bitmap by providing
their own SkBitmap* on which to set the (ref counted!)
SkPixelRef* instead

Attempt #2 to land this, original issue was in getSkBitmap
and should be fixed

Change-Id: I0fd9e193968b41e5597784140d56b4885906864a
diff --git a/core/jni/android_view_PointerIcon.cpp b/core/jni/android_view_PointerIcon.cpp
index f6d9a1a..d04adbf 100644
--- a/core/jni/android_view_PointerIcon.cpp
+++ b/core/jni/android_view_PointerIcon.cpp
@@ -80,10 +80,7 @@
 
     jobject bitmapObj = env->GetObjectField(loadedPointerIconObj, gPointerIconClassInfo.mBitmap);
     if (bitmapObj) {
-        SkBitmap* bitmap = GraphicsJNI::getSkBitmap(env, bitmapObj);
-        if (bitmap) {
-            outPointerIcon->bitmap = *bitmap; // use a shared pixel ref
-        }
+        GraphicsJNI::getSkBitmap(env, bitmapObj, &(outPointerIcon->bitmap));
         env->DeleteLocalRef(bitmapObj);
     }