Bug 1521000 - Part 2: Adjust our clang-format rules to include spaces after the hash for nested preprocessor directives r=sylvestre

# ignore-this-changeset

dom/html/HTMLMediaElement.cpp

@@ -5,10 +5,10 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #ifdef XP_WIN
-#include "objbase.h"
+#  include "objbase.h"
 // Some Windows header defines this, so undef it as it conflicts with our
 // function of the same name.
-#undef GetCurrentTime
+#  undef GetCurrentTime
 #endif
 
 #include "mozilla/dom/HTMLMediaElement.h"
@@ -24,7 +24,7 @@
 #include "FrameStatistics.h"
 #include "GMPCrashHelper.h"
 #ifdef MOZ_ANDROID_HLS_SUPPORT
-#include "HLSDecoder.h"
+#  include "HLSDecoder.h"
 #endif
 #include "HTMLMediaElement.h"
 #include "ImageContainer.h"