clang/win: Build chromium code without -Wno-incompatible-pointer-types.

remoting/remoting_host_win.gypi

Index: remoting/remoting_host_win.gypi
diff --git a/remoting/remoting_host_win.gypi b/remoting/remoting_host_win.gypi
index 8a796a0b20e75d66f1e57723ec5ed03c5414a47c..14a101d0946341d84aef1164676cb10b3c58709d 100644
--- a/remoting/remoting_host_win.gypi
+++ b/remoting/remoting_host_win.gypi
@@ -89,6 +89,13 @@
         '<(SHARED_INTERMEDIATE_DIR)/remoting/host/chromoting_lib.dlldata.c',
         '<(SHARED_INTERMEDIATE_DIR)/remoting/host/chromoting_lib_p.c',
       ],
+      'variables': {
+        'clang_warning_flags': [
+          # Source files generated by the MIDL compiler trigger warnings with
+          # -Wincompatible-pointer-types enabled.
+          '-Wno-incompatible-pointer-types',
+        ]
+      },
     },  # end of target 'remoting_lib_ps'
 
     # Regenerates 'chromoting_lib.rc' (used to embed 'chromoting_lib.tlb'