Makes the BattOrConnection read messages instead of bytes

tools/battor_agent/battor_connection.h

Index: tools/battor_agent/battor_connection.h
diff --git a/tools/battor_agent/battor_connection.h b/tools/battor_agent/battor_connection.h
index 6da8be35828adcc291b142a07ffc518437cf99e3..0a9733d12d807ec8a299da38a2ee09d346d08601 100644
--- a/tools/battor_agent/battor_connection.h
+++ b/tools/battor_agent/battor_connection.h
@@ -34,9 +34,9 @@ class BattOrConnection {
    public:
     virtual void OnConnectionOpened(bool success) = 0;
     virtual void OnBytesSent(bool success) = 0;
-    virtual void OnBytesRead(bool success,
-                             BattOrMessageType type,
-                             scoped_ptr<std::vector<char>> bytes) = 0;
+    virtual void OnMessageRead(bool success,
+                               BattOrMessageType type,
+                               scoped_ptr<std::vector<char>> bytes) = 0;
   };
 
   BattOrConnection(Listener* listener);
@@ -58,12 +58,11 @@ class BattOrConnection {
                          const void* buffer,
                          size_t bytes_to_send) = 0;
 
-  // Reads the specified number of bytes from the serial connection and calls
-  // the listener's OnBytesRead() when complete. Note that the number of bytes
-  // requested should not include the start, end, or type bytes required by the
-  // BattOr protocol, and that this method may issue multiple read read requests
-  // if the message contains escape characters.
-  virtual void ReadBytes(size_t bytes_to_read) = 0;
+  // Gets the next message available from the serial connection, reading up to
+  // max_data_bytes_to_read of actual data from the connection, and calls the
+  // listener's OnMessageRead() when complete. Note that max_data_bytes_to_read
+  // should not include any start, end, or escape bytes.
+  virtual void ReadMessage(size_t max_data_bytes_to_read) = 0;
 
   // Flushes the serial connection to the BattOr.
   virtual void Flush() = 0;