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.h b/runtime/platform/floating_point_win.h
similarity index 52%
copy from runtime/bin/dbg_connection_win.h
copy to runtime/platform/floating_point_win.h
index 6b3da1b3430375b0c21fd98783925d1b3d73ceb6..a97051a1bff75935a234364104dde431da41df22 100644
--- a/runtime/bin/dbg_connection_win.h
+++ b/runtime/platform/floating_point_win.h
@@ -2,14 +2,10 @@
 // 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.
 
-#ifndef BIN_DBG_CONNECTION_WIN_H_
-#define BIN_DBG_CONNECTION_WIN_H_
+#ifndef PLATFORM_FLOATING_POINT_WIN_H_
+#define PLATFORM_FLOATING_POINT_WIN_H_
 
+double atan2_ieee(double x, double y);
+double fmod_ieee(double x, double y);
 
-
-class DebuggerConnectionImpl {
- public:
-  static void StartHandler(int port_number);
-};
-
-#endif  // BIN_DBG_CONNECTION_WIN_H_
+#endif  // PLATFORM_FLOATING_POINT_WIN_H_