Initial error handling code

include/core/SkShader.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkShader_DEFINED
 #define SkShader_DEFINED
@@ skipping 326 matching lines @@
      *  @param src  The bitmap to use inside the shader
      *  @param tmx  The tiling mode to use when sampling the bitmap in the x-direction.
      *  @param tmy  The tiling mode to use when sampling the bitmap in the y-direction.
      *  @return     Returns a new shader object. Note: this function never returns null.
     */
     static SkShader* CreateBitmapShader(const SkBitmap& src,
                                         TileMode tmx, TileMode tmy);
 
     SkDEVCODE(virtual void toString(SkString* str) const;)
 
+    SK_DEFINE_FLATTENABLE_TYPE(SkShader)
+
 protected:
     enum MatrixClass {
         kLinear_MatrixClass,            // no perspective
         kFixedStepInX_MatrixClass,      // fast perspective, need to call fixedStepInX() each scanline
         kPerspective_MatrixClass        // slow perspective, need to mappoints each pixel
     };
     static MatrixClass ComputeMatrixClass(const SkMatrix&);
 
     // These can be called by your subclass after setContext() has been called
     uint8_t             getPaintAlpha() const { return fPaintAlpha; }
@@ skipping 12 matching lines @@
     SkDEBUGCODE(SkBool8 fInSetContext;)
 
     static SkShader* CreateBitmapShader(const SkBitmap& src,
                                         TileMode, TileMode,
                                         void* storage, size_t storageSize);
     friend class SkAutoBitmapShaderInstall;
     typedef SkFlattenable INHERITED;
 };
 
 #endif