diff --git a/plugins/common/Debug.cpp b/plugins/common/Debug.cpp
new file mode 100644
index 0000000..66382bd
--- /dev/null
+++ b/plugins/common/Debug.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2008 Google Inc.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#include <cstdio>
+
+#ifdef _WINDOWS
+#include <windows.h>
+#endif
+
+#include "Debug.h"
+
+#ifdef GWT_DEBUGDISABLE
+// Dummy implementations for when debugging has been disabled
+Debug::DebugStream& Debug::flush(Debug::DebugStream& dbg) {
+  return dbg;
+}
+
+void Debug::logFinish() {}
+
+void Debug::logString(const char* str) {}
+
+#else
+// Warning: this function is inlined in the manipulator output operator in DebugStream.
+// It only remains here because some compiler/linker combinations such as MSVC will
+// give unresolved symbol errors if it isn't -- GCC, for example, will completely remove
+// all traces of this method.
+Debug::DebugStream& Debug::flush(Debug::DebugStream& dbg) {
+  Debug::logFinish();
+  return dbg;
+}
+
+// These methods are implemented in an Objective-C++ file on OSX
+#if !defined(__APPLE_CC__) || defined(__mac)
+
+#ifdef _WINDOWS
+#define DEBUG_BUF_SIZE 2048
+
+static char buf[DEBUG_BUF_SIZE + 3]; // room for CR NL Null
+static char *bufPtr = buf;
+#endif
+
+void Debug::logFinish() {
+#ifdef _WINDOWS
+  logString("\r\n");
+  ::OutputDebugStringA(buf);
+  bufPtr = buf;
+#else
+  putchar('\n');
+#endif
+}
+
+// logStart may be called multiple times per logFinish
+void Debug::logStart(LogLevel level) {
+}
+
+void Debug::logString(const char* str) {
+#ifdef _WINDOWS
+  size_t len = strlen(str);
+  size_t buflen = DEBUG_BUF_SIZE - (bufPtr - buf);
+  if (len >= buflen) {
+    len = buflen - 1;
+  }
+  strncpy_s(bufPtr, buflen, str, len);
+  bufPtr += len;
+#else
+  printf("%s", str);
+#endif
+}
+#endif
+#endif
+