Move the ShouldUseDirectWrite function from sandbox_win.cc/.h to ui/gfx/win/dpi.cc/.h.

ui/gfx/switches.cc

Index: ui/gfx/switches.cc
diff --git a/ui/gfx/switches.cc b/ui/gfx/switches.cc
index ad7c9b98581f73e7e69deed2a12ff7af3696de01..4a0299fbf7861fe448a3e77eccc8082849800b87 100644
--- a/ui/gfx/switches.cc
+++ b/ui/gfx/switches.cc
@@ -20,4 +20,9 @@ const char kEnableWebkitTextSubpixelPositioning[] =
 // Overrides the device scale factor for the browser UI and the contents.
 const char kForceDeviceScaleFactor[] = "force-device-scale-factor";
 
+#if defined(OS_WIN)
+// Disables the DirectWrite font rendering system on windows.
+const char kDisableDirectWrite[] = "disable-direct-write";
+#endif
+
 }  // namespace switches