Add a new UMA histogram for tracking SpdySessionErrorDetails

net/spdy/spdy_session.h

Index: net/spdy/spdy_session.h
diff --git a/net/spdy/spdy_session.h b/net/spdy/spdy_session.h
index 7b93171b45fb37b1e91748f664377a093494f240..1b86fbc53b0f94fcc390286bbe9e1e77f6101f8a 100644
--- a/net/spdy/spdy_session.h
+++ b/net/spdy/spdy_session.h
@@ -49,6 +49,32 @@ class BoundNetLog;
 class SpdyStream;
 class SSLInfo;
 
+enum SpdySessionErrorDetails {
+  // SpdyFramer::SpdyErrors
+  SPDY_NO_ERROR,
+  SPDY_INVALID_CONTROL_FRAME,      // Control frame is mal-formatted.
+  SPDY_CONTROL_PAYLOAD_TOO_LARGE,  // Control frame payload was too large.
+  SPDY_ZLIB_INIT_FAILURE,          // The Zlib library could not initialize.
+  SPDY_UNSUPPORTED_VERSION,        // Control frame has unsupported version.
+  SPDY_DECOMPRESS_FAILURE,         // There was an error decompressing.
+  SPDY_COMPRESS_FAILURE,           // There was an error compressing.
+  SPDY_CREDENTIAL_FRAME_CORRUPT,   // CREDENTIAL frame could not be parsed.
+  SPDY_INVALID_DATA_FRAME_FLAGS,   // Data frame has invalid flags.
+
+  // SpdySession errors
+  UNEXPECTED_PING,
+  PING_FAILED,
+  SPDY_COMPRESSION_FAILURE,
+  REQUST_FOR_SECURE_CONTENT_OVER_INSECURE_SESSION,

[willchan no longer on Chromium, 2012/04/27 21:59:30]

REQUEST

+  READ_FAILED,
+  WRITE_FAILED,
+  NUM_SPDY_SESSION_ERROR_DETAILS
+};
+
+COMPILE_ASSERT(static_cast<SpdySessionErrorDetails>(SpdyFramer::LAST_ERROR) ==

[willchan no longer on Chromium, 2012/04/27 21:59:30]

include compiler_specific.h for this

+               UNEXPECTED_PING,
+               SpdySessionErrorDetails_SpdyErrors_mismatch);
+
 class NET_EXPORT SpdySession : public base::RefCounted<SpdySession>,
                                public BufferedSpdyFramerVisitorInterface {
  public:
@@ -206,6 +232,7 @@ class NET_EXPORT SpdySession : public base::RefCounted<SpdySession>,
   // session pool.
   // |description| indicates the reason for the error.
   void CloseSessionOnError(net::Error err,
+                           SpdySessionErrorDetails details,
                            bool remove_from_pool,
                            const std::string& description);
 
@@ -429,7 +456,7 @@ class NET_EXPORT SpdySession : public base::RefCounted<SpdySession>,
   void InvokeUserStreamCreationCallback(scoped_refptr<SpdyStream>* stream);
 
   // BufferedSpdyFramerVisitorInterface:
-  virtual void OnError(int error_code) OVERRIDE;
+  virtual void OnError(SpdyFramer::SpdyError error_code) OVERRIDE;
   virtual void OnStreamError(SpdyStreamId stream_id,
                              const std::string& description) OVERRIDE;
   virtual void OnRstStream(