Move several property queries to Properties class

bug:17478770

This removes a lot of redundant property query code, and puts the
queries all in one place, so defining them automatically will be simpler
in the future.

Change-Id: I0428550e6081f07bc6554ffdf73b22284325abb8
diff --git a/libs/hwui/GradientCache.h b/libs/hwui/GradientCache.h
index b762ca7..dccd450 100644
--- a/libs/hwui/GradientCache.h
+++ b/libs/hwui/GradientCache.h
@@ -123,10 +123,6 @@
     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();
@@ -177,7 +173,7 @@
     LruCache<GradientCacheEntry, Texture*> mCache;
 
     uint32_t mSize;
-    uint32_t mMaxSize;
+    const uint32_t mMaxSize;
 
     GLint mMaxTextureSize;
     bool mUseFloatTexture;