Create Density based resource values when needed.

This will let the layoutlib know when to scale bitmaps
that are not in the native density of the rendering.

Change-Id: I08c99666460b5b5a3ed8d0aac7fa1b7c0136fd6b

tools/layoutlib_utils/src/com/android/layoutlib/utils/DensityBasedResourceValue.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.layoutlib.utils;
+
+import com.android.layoutlib.api.IDensityBasedResourceValue;
+
+public class DensityBasedResourceValue extends ResourceValue implements IDensityBasedResourceValue {
+
+    private Density mDensity;
+
+    public DensityBasedResourceValue(String type, String name, String value, Density density,
+            boolean isFramework) {
+        super(type, name, value, isFramework);
+        mDensity = density;
+    }
+
+    public Density getDensity() {
+        return mDensity;
+    }
+}