List message decryption failures on chrome://gcm-internals

components/gcm_driver/gcm_driver.h

Index: components/gcm_driver/gcm_driver.h
diff --git a/components/gcm_driver/gcm_driver.h b/components/gcm_driver/gcm_driver.h
index c61cbb3b5d8c6875a97c2b5982c9b03f61d5d5c7..1b79e2fd51f2f3439e465f3cb5528ef9a6765007 100644
--- a/components/gcm_driver/gcm_driver.h
+++ b/components/gcm_driver/gcm_driver.h
@@ -256,6 +256,11 @@ class GCMDriver {
                         const std::string& receiver_id,
                         const OutgoingMessage& message) = 0;
 
+  // Platform-specific implementation of recording message decryption failures.
+  virtual void RecordDecryptionFailure(
+      const std::string& app_id,
+      GCMEncryptionProvider::DecryptionFailure reason) = 0;
+
   // Runs the Register callback.
   void RegisterFinished(const std::string& app_id,
                         const std::string& registration_id,