Move generic logger on the Wine side to common.h

We'll also need this for VST2 plugins when we start caching the time
info.

src/wine-host/bridges/common.cpp

@@ -19,7 +19,7 @@
 #include "../editor.h"
 
 HostBridge::HostBridge(boost::filesystem::path plugin_path)
-    : plugin_path(plugin_path) {}
+    : plugin_path(plugin_path), generic_logger(Logger::create_wine_stderr()) {}
 
 void HostBridge::handle_win32_events() {
     MSG msg;

src/wine-host/bridges/common.h

@@ -20,6 +20,8 @@
 
 #include <boost/filesystem.hpp>
 
+#include "../../common/logging/common.h"
+
 /**
  * The base for the Wine plugin host bridge interface for all plugin types. This
  * only has to be able to handle Win32 and X11 events. Implementations of this
@@ -87,4 +89,14 @@ class HostBridge {
      * The path to the .dll being loaded in the Wine plugin host.
      */
     const boost::filesystem::path plugin_path;
+
+   protected:
+    /**
+     * A logger, just like we have on the plugin side. This is normally not
+     * needed because we can just print to STDERR, but this way we can
+     * conditionally hide output based on the verbosity level.
+     *
+     * @see Logger::create_wine_stderr
+     */
+    Logger generic_logger;
 };

src/wine-host/bridges/vst3.cpp

@@ -91,7 +91,6 @@ Vst3Bridge::Vst3Bridge(MainContext& main_context,
                        std::string plugin_dll_path,
                        std::string endpoint_base_dir)
     : HostBridge(plugin_dll_path),
-      generic_logger(Logger::create_wine_stderr()),
       logger(generic_logger),
       main_context(main_context),
       sockets(main_context.context, endpoint_base_dir, false) {

src/wine-host/bridges/vst3.h

@@ -361,9 +361,6 @@ class Vst3Bridge : public HostBridge {
     void unregister_context_menu(size_t object_instance_id,
                                  size_t context_menu_id);
 
-   private:
-    Logger generic_logger;
-
    public:
     /**
      * A logger instance we'll use to log about failed