add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning

src/core/SkOrderedWriteBuffer.cpp

Index: src/core/SkOrderedWriteBuffer.cpp
diff --git a/src/core/SkOrderedWriteBuffer.cpp b/src/core/SkOrderedWriteBuffer.cpp
index 1c15e43ef02eb08d7d434c2b893e0a1488f069ab..25ca769168da80bd3556b0c831b5a0483e682a36 100644
--- a/src/core/SkOrderedWriteBuffer.cpp
+++ b/src/core/SkOrderedWriteBuffer.cpp
@@ -310,10 +310,10 @@ void SkOrderedWriteBuffer::writeFlattenable(const SkFlattenable* flattenable) {
     // make room for the size of the flattened object
     (void)fWriter.reserve(sizeof(uint32_t));
     // record the current size, so we can subtract after the object writes.
-    uint32_t offset = fWriter.size();
+    uint32_t offset = fWriter.bytesWritten();
     // now flatten the object
     flattenObject(flattenable, *this);
-    uint32_t objSize = fWriter.size() - offset;
+    uint32_t objSize = fWriter.bytesWritten() - offset;
     // record the obj's size
     *fWriter.peek32(offset - sizeof(uint32_t)) = objSize;
 }