Adding 3D lut color filter

include/core/SkBitmap.h

Index: include/core/SkBitmap.h
diff --git a/include/core/SkBitmap.h b/include/core/SkBitmap.h
index b36a1fd3fddc59b211c21be88efd367af01bfb53..0752e2a669f71448d59fa0acae01ca6bc5303d24 100644
--- a/include/core/SkBitmap.h
+++ b/include/core/SkBitmap.h
@@ -198,6 +198,14 @@ public:
     */
     void setIsVolatile(bool);
 
+    /** Returns true if the bitmap contains a 3D lut.
+    */
+    bool is3DLut() const;
+
+    /** Specify whether this bitmap contains a 3D lut. Bitmaps are not 3D luts by default.
+    */
+    void setIs3DLut(bool);
+
     /** Reset the bitmap to its initial state (see default constructor). If we are a (shared)
         owner of the pixels, that ownership is decremented.
     */
@@ -748,6 +756,7 @@ private:
          */
         kHasHardwareMipMap_Flag = 0x08,
 #endif
+        kIs3DLut_Flag = 0x10,
     };
 
     SkImageInfo fInfo;