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net/base/io_buffer.cc

Index: net/base/io_buffer.cc
diff --git a/net/base/io_buffer.cc b/net/base/io_buffer.cc
index dd1d4517eeab06721b62d3f70faf7c91f3a885d1..a233e3f1f712107d4651423edb1a5402f255a9d8 100644
--- a/net/base/io_buffer.cc
+++ b/net/base/io_buffer.cc
@@ -79,6 +79,12 @@ void DrainableIOBuffer::SetOffset(int bytes) {
   data_ = base_->data() + used_;
 }
 
+void DrainableIOBuffer::SetSize(int size) {
+  DCHECK_GE(size, 0);
+  DCHECK_LE(used_, size);
+  size_ = size;
+}
+
 DrainableIOBuffer::~DrainableIOBuffer() {
   // The buffer is owned by the |base_| instance.
   data_ = NULL;