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diff --git a/libs/hwui/GradientCache.h b/libs/hwui/GradientCache.h
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+++ b/libs/hwui/GradientCache.h
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+/*
+ * Copyright (C) 2010 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.
+ */
+
+#ifndef ANDROID_UI_GRADIENT_CACHE_H
+#define ANDROID_UI_GRADIENT_CACHE_H
+
+#include <SkShader.h>
+
+#include "Texture.h"
+#include "utils/GenerationCache.h"
+
+namespace android {
+namespace uirenderer {
+
+/**
+ * A simple LRU gradient cache. The cache has a maximum size expressed in bytes.
+ * Any texture added to the cache causing the cache to grow beyond the maximum
+ * allowed size will also cause the oldest texture to be kicked out.
+ */
+class GradientCache: public OnEntryRemoved<SkShader*, Texture*> {
+public:
+    GradientCache();
+    GradientCache(uint32_t maxByteSize);
+    ~GradientCache();
+
+    /**
+     * Used as a callback when an entry is removed from the cache.
+     * Do not invoke directly.
+     */
+    void operator()(SkShader*& shader, Texture*& texture);
+
+    /**
+     * Adds a new linear gradient to the cache. The generated texture is
+     * returned.
+     */
+    Texture* addLinearGradient(SkShader* shader, uint32_t* colors, float* positions,
+            int count, SkShader::TileMode tileMode = SkShader::kClamp_TileMode);
+    /**
+     * Returns the texture associated with the specified shader.
+     */
+    Texture* get(SkShader* shader);
+    /**
+     * Removes the texture associated with the specified shader. Returns NULL
+     * if the texture cannot be found. Upon remove the texture is freed.
+     */
+    void remove(SkShader* shader);
+    /**
+     * Clears the cache. This causes all textures to be deleted.
+     */
+    void clear();
+
+    /**
+     * Sets the maximum size of the cache in bytes.
+     */
+    void setMaxSize(uint32_t maxSize);
+    /**
+     * Returns the maximum size of the cache in bytes.
+     */
+    uint32_t getMaxSize();
+    /**
+     * Returns the current size of the cache in bytes.
+     */
+    uint32_t getSize();
+
+private:
+    void generateTexture(SkBitmap* bitmap, Texture* texture);
+
+    GenerationCache<SkShader*, Texture*> mCache;
+
+    uint32_t mSize;
+    uint32_t mMaxSize;
+
+    /**
+     * Used to access mCache and mSize. All methods are accessed from a single
+     * thread except for remove().
+     */
+    mutable Mutex mLock;
+}; // class GradientCache
+
+}; // namespace uirenderer
+}; // namespace android
+
+#endif // ANDROID_UI_GRADIENT_CACHE_H