Bug 1457092 - Only include SandboxBroker.h header on Linux sandbox. r=gcp

gfx/thebes/gfxFcPlatformFontList.cpp

@@ -41,7 +41,7 @@
 #include "mozilla/X11Util.h"
 #endif
 
-#ifdef MOZ_CONTENT_SANDBOX
+#if defined(MOZ_CONTENT_SANDBOX) && defined (XP_LINUX)
 #include "mozilla/SandboxBrokerPolicyFactory.h"
 #include "mozilla/SandboxSettings.h"
 #endif

gfx/thebes/gfxFcPlatformFontList.h

@@ -23,7 +23,7 @@
 #include <cairo.h>
 #include <cairo-ft.h>
 
-#ifdef MOZ_CONTENT_SANDBOX
+#if defined(MOZ_CONTENT_SANDBOX) && defined (XP_LINUX)
 #include "mozilla/SandboxBroker.h"
 #endif