Initial error handling code

include/core/SkFlattenableBuffers.h

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkFlattenableBuffers_DEFINED
 #define SkFlattenableBuffers_DEFINED
 
 #include "SkColor.h"
+#include "SkError.h"
 #include "SkPaint.h"
 #include "SkPoint.h"
 
 class SkBitmap;
 class SkFlattenable;
 struct SkIRect;
 class SkMatrix;
 class SkOrderedReadBuffer;
 class SkOrderedWriteBuffer;
 class SkPath;
@@ skipping 72 matching lines @@
     SkPoint readPoint() {
         SkPoint point;
         this->readPoint(&point);
         return point;
     }
 
     template <typename T> T* readFlattenableT() {
         return static_cast<T*>(this->readFlattenable());
     }
 
+    void setError(SkError error) {
+        fError = static_cast<SkError>(fError | error);
+    }
+
+protected:
+    SkError fError;
+
 private:
     uint32_t fFlags;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 class SkFlattenableWriteBuffer {
 public:
     SkFlattenableWriteBuffer();
     virtual ~SkFlattenableWriteBuffer();
@@ skipping 51 matching lines @@
     bool persistTypeface() const { return (fFlags & kCrossProcess_Flag) != 0; }
 
 protected:
     // A helper function so that each subclass does not have to be a friend of SkFlattenable
     void flattenObject(SkFlattenable* obj, SkFlattenableWriteBuffer& buffer);
 
     uint32_t fFlags;
 };
 
 #endif