Makes the BattOrConnection read messages instead of bytes

tools/battor_agent/battor_agent.h

Index: tools/battor_agent/battor_agent.h
diff --git a/tools/battor_agent/battor_agent.h b/tools/battor_agent/battor_agent.h
index 643c45d386fdac892772663f86bff682bac39c63..37cd9ea1c65ceb4e4d8d78df816fb76f3c153f2b 100644
--- a/tools/battor_agent/battor_agent.h
+++ b/tools/battor_agent/battor_agent.h
@@ -55,9 +55,9 @@ class BattOrAgent : public BattOrConnection::Listener,
   // BattOrConnection::Listener implementations.
   void OnConnectionOpened(bool success) override;
   void OnBytesSent(bool success) override;
-  void OnBytesRead(bool success,
-                   BattOrMessageType type,
-                   scoped_ptr<std::vector<char>> bytes) override;
+  void OnMessageRead(bool success,
+                     BattOrMessageType type,
+                     scoped_ptr<std::vector<char>> bytes) override;
 
  protected:
   // The connection that knows how to communicate with the BattOr in terms of