[SPDY] Replace SpdyIOBuffer with new SpdyBuffer class

net/spdy/spdy_stream.h

Index: net/spdy/spdy_stream.h
diff --git a/net/spdy/spdy_stream.h b/net/spdy/spdy_stream.h
index 881b48ebd70b0dbd7527d82a95779296d9a9009e..fd145eadf5c9a5ba75870ba90219c1808e817649 100644
--- a/net/spdy/spdy_stream.h
+++ b/net/spdy/spdy_stream.h
@@ -12,6 +12,7 @@
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/bandwidth_metrics.h"
@@ -83,9 +84,10 @@ class NET_EXPORT_PRIVATE SpdyStream
     // Called when a HEADERS frame is sent.
     virtual void OnHeadersSent() = 0;
 
-    // Called when data is received.
-    // Returns network error code. OK when it successfully receives data.
-    virtual int OnDataReceived(const char* data, int length) = 0;
+    // Called when data is received. |buffer| may be NULL, which
+    // signals EOF.  Must return OK if the data was received
+    // successfully, or a network error code otherwise.
+    virtual int OnDataReceived(scoped_ptr<SpdyBuffer> buffer) = 0;
 
     // Called when data is sent.
     virtual void OnDataSent(size_t bytes_sent) = 0;
@@ -218,7 +220,7 @@ class NET_EXPORT_PRIVATE SpdyStream
   //
   // |length| is the number of bytes received (at most 2^24 - 1) or 0 if
   //          the stream is being closed.
-  void OnDataReceived(const char* buffer, size_t length);
+  void OnDataReceived(scoped_ptr<SpdyBuffer> buffer);
 
   // Called by the SpdySession when a frame has been successfully and
   // completely written. |frame_size| is the total size of the frame
@@ -289,8 +291,8 @@ class NET_EXPORT_PRIVATE SpdyStream
   int GetProtocolVersion() const;
 
  private:
-  class SynStreamFrameProducer;
-  class HeaderFrameProducer;
+  class SynStreamBufferProducer;
+  class HeaderBufferProducer;
 
   enum State {
     STATE_NONE,
@@ -411,7 +413,7 @@ class NET_EXPORT_PRIVATE SpdyStream
   int recv_bytes_;
 
   // Data received before delegate is attached.
-  std::vector<scoped_refptr<IOBufferWithSize> > pending_buffers_;
+  ScopedVector<SpdyBuffer> pending_buffers_;
 
   SSLClientCertType domain_bound_cert_type_;
   std::string domain_bound_private_key_;