add safemath version of readbuffer->skip

Bug: skia:
Change-Id: I6a5d24569cc1bd93bd190d81e3375993da9c56f0
Reviewed-on: https://skia-review.googlesource.com/88581
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/core/SkReadBuffer.cpp b/src/core/SkReadBuffer.cpp
index 9d15c1f40e..c4ca315f66 100644
--- a/src/core/SkReadBuffer.cpp
+++ b/src/core/SkReadBuffer.cpp
@@ -13,6 +13,7 @@
 #include "SkMathPriv.h"
 #include "SkMatrixPriv.h"
 #include "SkReadBuffer.h"
+#include "SkSafeMath.h"
 #include "SkStream.h"
 #include "SkTypeface.h"
 
@@ -106,6 +107,10 @@ const void* SkReadBuffer::skip(size_t size) {
     return addr;
 }
 
+const void* SkReadBuffer::skip(size_t count, size_t size) {
+    return this->skip(SkSafeMath::Mul(count, size));
+}
+
 void SkReadBuffer::setDeserialProcs(const SkDeserialProcs& procs) {
     fProcs = procs;
 }