Rename hwui/PixelRef to hwui/Bitmap
Test: refactoring cl.
bug:32216791

Change-Id: I26de43f71027bccb43a5011f84080ab4631b2883
diff --git a/core/jni/android_view_SurfaceControl.cpp b/core/jni/android_view_SurfaceControl.cpp
index 65f12ac..5b88181 100644
--- a/core/jni/android_view_SurfaceControl.cpp
+++ b/core/jni/android_view_SurfaceControl.cpp
@@ -186,14 +186,13 @@
         return NULL;
     }
 
-    auto pixelRef = new PixelRef(
+    auto bitmap = new Bitmap(
             (void*) screenshot->getPixels(), (void*) screenshot.get(), DeleteScreenshot,
             screenshotInfo, rowBytes, nullptr);
     screenshot.release();
-    pixelRef->setImmutable();
-
-    return bitmap::createBitmap(env, pixelRef,
-            bitmap::kBitmapCreateFlag_Premultiplied, NULL);
+    bitmap->setImmutable();
+    return bitmap::createBitmap(env, bitmap,
+            android::bitmap::kBitmapCreateFlag_Premultiplied, NULL);
 }
 
 static void nativeScreenshot(JNIEnv* env, jclass clazz, jobject displayTokenObj,