Thread picture version through to SkReadBuffer.

src/core/SkReadBuffer.cpp

Index: src/core/SkReadBuffer.cpp
diff --git a/src/core/SkReadBuffer.cpp b/src/core/SkReadBuffer.cpp
index 6a590ed6942aeff37f46eb1b9eeea68afe1c35bb..b60dee3ba6b860c88f1393d0cb4ecd168b697c12 100644
--- a/src/core/SkReadBuffer.cpp
+++ b/src/core/SkReadBuffer.cpp
@@ -25,6 +25,7 @@ static uint32_t default_flags() {
 
 SkReadBuffer::SkReadBuffer() {
     fFlags = default_flags();
+    fPictureVersion = 0;
     fMemoryPtr = NULL;
 
     fBitmapStorage = NULL;
@@ -42,6 +43,7 @@ SkReadBuffer::SkReadBuffer() {
 
 SkReadBuffer::SkReadBuffer(const void* data, size_t size) {
     fFlags = default_flags();
+    fPictureVersion = 0;
     fReader.setMemory(data, size);
     fMemoryPtr = NULL;
 
@@ -60,6 +62,7 @@ SkReadBuffer::SkReadBuffer(const void* data, size_t size) {
 
 SkReadBuffer::SkReadBuffer(SkStream* stream) {
     fFlags = default_flags();
+    fPictureVersion = 0;
     const size_t length = stream->getLength();
     fMemoryPtr = sk_malloc_throw(length);
     stream->read(fMemoryPtr, length);