Removed unused ZoomCache class.

Bug: 9170644

Note: this class doesn't appear to have been used by the zoom
on doubletap.

Change-Id: Ie3319511ade7732976488f2bb7d76c5e1c130db9
diff --git a/src/com/android/gallery3d/filtershow/cache/ImageLoader.java b/src/com/android/gallery3d/filtershow/cache/ImageLoader.java
index a5188df..7ddd9be 100644
--- a/src/com/android/gallery3d/filtershow/cache/ImageLoader.java
+++ b/src/com/android/gallery3d/filtershow/cache/ImageLoader.java
@@ -61,8 +61,6 @@
     private Bitmap mOriginalBitmapHighres = null;
     private Bitmap mBackgroundBitmap = null;
 
-    private final ZoomCache mZoomCache = new ZoomCache();
-
     private int mOrientation = 0;
     private HistoryAdapter mAdapter = null;
 
diff --git a/src/com/android/gallery3d/filtershow/cache/ZoomCache.java b/src/com/android/gallery3d/filtershow/cache/ZoomCache.java
deleted file mode 100644
index dbd0751..0000000
--- a/src/com/android/gallery3d/filtershow/cache/ZoomCache.java
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright (C) 2012 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.gallery3d.filtershow.cache;
-
-import android.graphics.Bitmap;
-import android.graphics.Rect;
-
-import com.android.gallery3d.filtershow.presets.ImagePreset;
-
-public class ZoomCache {
-
-    private ImagePreset mImagePreset = null;
-    private Bitmap mBitmap = null;
-    private Rect mBounds = null;
-
-    // TODO: move the processing to a background thread...
-    public Bitmap getImage(ImagePreset preset, Rect bounds) {
-        if (mBounds != bounds) {
-            return null;
-        }
-        if (mImagePreset == null) {
-            return null;
-        }
-        if (!mImagePreset.same(preset)) {
-            return null;
-        }
-        return mBitmap;
-    }
-
-    public void setImage(ImagePreset preset, Rect bounds, Bitmap bitmap) {
-        mBitmap = bitmap;
-        mBounds = bounds;
-        mImagePreset = preset;
-    }
-
-    public void reset(ImagePreset imagePreset) {
-        if (imagePreset == mImagePreset) {
-            mBitmap = null;
-        }
-    }
-}