Fix floating point issues on Windows.

runtime/platform/floating_point_win.h

Index: runtime/platform/floating_point_win.h
diff --git a/runtime/bin/dbg_connection_win.cc b/runtime/platform/floating_point_win.h
similarity index 50%
copy from runtime/bin/dbg_connection_win.cc
copy to runtime/platform/floating_point_win.h
index 505e970a97be8533e799e1c6955fb9f9cf15332c..e2c2e13ce9bbab7b8da304b1b36bbb23703e5def 100644
--- a/runtime/bin/dbg_connection_win.cc
+++ b/runtime/platform/floating_point_win.h
@@ -2,9 +2,11 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-#include "bin/dbg_connection.h"
+#ifndef PLATFORM_FLOATING_POINT_WIN_H_
+#define PLATFORM_FLOATING_POINT_WIN_H_
 
-void DebuggerConnectionImpl::StartHandler(int port_number) {
-  FATAL("Debugger wire protocol not yet implemented on Linux\n");
-}
+double atan2_ieee(double x, double y);
+double modulo(double x, double y);
+double round(double x);
 
+#endif  // PLATFORM_FLOATING_POINT_WIN_H_