Add support for paletted textures.

Change-Id: I36e6069bd58f78c609cdd1f3e4560c98f128f48e
diff --git a/libs/hwui/TextureCache.h b/libs/hwui/TextureCache.h
index 7cf66d9..34c5455 100644
--- a/libs/hwui/TextureCache.h
+++ b/libs/hwui/TextureCache.h
@@ -79,6 +79,7 @@
      */
     void generateTexture(SkBitmap* bitmap, Texture* texture, bool regenerate = false);
 
+    void uploadPalettedTexture(bool resize, SkBitmap* bitmap, uint32_t width, uint32_t height);
     void uploadToTexture(bool resize, GLenum format, GLsizei width, GLsizei height,
             GLenum type, const GLvoid * data);