[SPDY] Replace SpdyIOBuffer with new SpdyBuffer class

net/spdy/spdy_stream_test_util.cc

Index: net/spdy/spdy_stream_test_util.cc
diff --git a/net/spdy/spdy_stream_test_util.cc b/net/spdy/spdy_stream_test_util.cc
index ac96cf9124dfdb11247602bb3e3f60fa5595f56c..0165c2046aa42c78568d5eb96164ffeb1886fe4e 100644
--- a/net/spdy/spdy_stream_test_util.cc
+++ b/net/spdy/spdy_stream_test_util.cc
@@ -37,7 +37,7 @@ int ClosingDelegate::OnResponseReceived(const SpdyHeaderBlock& response,
 
 void ClosingDelegate::OnHeadersSent() {}
 
-int ClosingDelegate::OnDataReceived(const char* data, int length) {
+int ClosingDelegate::OnDataReceived(scoped_ptr<SpdyBuffer> buffer) {
   return OK;
 }
 
@@ -77,8 +77,11 @@ void StreamDelegateBase::OnHeadersSent() {
   headers_sent_++;
 }
 
-int StreamDelegateBase::OnDataReceived(const char* buffer, int bytes) {
-  received_data_ += std::string(buffer, bytes);
+int StreamDelegateBase::OnDataReceived(scoped_ptr<SpdyBuffer> buffer) {
+  if (buffer) {
+    received_data_ += std::string(buffer->GetRemainingData(),
+                                  buffer->GetRemainingSize());
+  }
   return OK;
 }