metrics cleanup and fixes.

src/platform/metrics/metrics_library.h

Index: src/platform/metrics/metrics_library.h
diff --git a/src/platform/metrics/metrics_library.h b/src/platform/metrics/metrics_library.h
index f1268c971c925c96bee8da58917a5edadd28a80c..ebc972cae4b897f193d80ee4e0b9897f887c7727 100644
--- a/src/platform/metrics/metrics_library.h
+++ b/src/platform/metrics/metrics_library.h
@@ -12,7 +12,6 @@
 #ifndef METRICS_LIBRARY_H_
 #define METRICS_LIBRARY_H_
 
-#include <stdio.h>
 #include <string>
 
 // TODO(sosa@chromium.org): Add testing for send methods
@@ -20,14 +19,10 @@
 // Library used to send metrics both Autotest and Chrome
 class MetricsLibrary {
  public:
-  // Sends histogram data to Chrome.
-  static void SendToChrome(std::string name, std::string value);
-  // Sends to Autotest.
-  static void SendToAutotest(std::string name, std::string value);
-
- private:
-  // Prints message to stderr
-  static void PrintError(const char *message, const char *file, int code);
+  // Sends histogram data to Chrome and returns true on success.
+  static bool SendToChrome(std::string name, int value);
+  // Sends to Autotest and returns true on success.
+  static bool SendToAutotest(std::string name, int value);
 };
 
 #endif /* METRICS_LIBRARY_H_ */