FLOG: Add examples/flog_viewer and always show MOJO_DLOG messages

services/flog/flog_logger_impl.h

Index: services/flog/flog_logger_impl.h
diff --git a/services/flog/flog_logger_impl.h b/services/flog/flog_logger_impl.h
index d0a17636008e818dd9fd3d09df5a4f880b04f907..e599c97902eb2650bd2a74ebde8cce7256241f07 100644
--- a/services/flog/flog_logger_impl.h
+++ b/services/flog/flog_logger_impl.h
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/services/flog/interfaces/flog.mojom.h"
 #include "services/flog/flog_directory.h"
 #include "services/flog/flog_service_impl.h"
 
@@ -17,7 +18,8 @@ namespace flog {
 
 // FlogLogger implementation.
 class FlogLoggerImpl : public FlogServiceImpl::ProductBase,
-                       MessageReceiverWithResponderStatus {
+                       private MessageReceiverWithResponderStatus,
+                       private FlogLogger {
  public:
   static std::shared_ptr<FlogLoggerImpl> Create(
       InterfaceRequest<FlogLogger> request,
@@ -28,12 +30,6 @@ class FlogLoggerImpl : public FlogServiceImpl::ProductBase,
 
   ~FlogLoggerImpl() override;
 
-  // MessageReceiverWithResponderStatus implementation.
-  bool Accept(Message* message) override;
-
-  bool AcceptWithResponder(Message* message,
-                           MessageReceiverWithStatus* responder) override;
-
  private:
   FlogLoggerImpl(InterfaceRequest<FlogLogger> request,
                  uint32_t log_id,
@@ -43,8 +39,32 @@ class FlogLoggerImpl : public FlogServiceImpl::ProductBase,
 
   void WriteData(uint32_t data_size, const void* data);
 
+  // MessageReceiverWithResponderStatus implementation.
+  bool Accept(Message* message) override;
+
+  bool AcceptWithResponder(Message* message,
+                           MessageReceiverWithStatus* responder) override;
+
+  // FlogLogger implementation (called by stub_).
+  void LogMojoLoggerMessage(int64_t time_us,
+                            int32_t log_level,
+                            const String& message,
+                            const String& source_file,
+                            uint32_t source_line) override;
+
+  void LogChannelCreation(int64_t time_us,
+                          uint32_t channel_id,
+                          const String& type_name) override;
+
+  void LogChannelMessage(int64_t time_us,
+                         uint32_t channel_id,
+                         mojo::Array<uint8_t> data) override;
+
+  void LogChannelDeletion(int64_t time_us, uint32_t channel_id) override;
+
   std::unique_ptr<mojo::internal::Router> router_;
   files::FilePtr file_;
+  FlogLoggerStub stub_;
 };
 
 }  // namespace flog