Bug 1370865 - Suppress more MSVC warnings in gfx/angle. r=jgilbert

MozReview-Commit-ID: D9HLvwCLRQn

--HG--
extra : rebase_source : ba334335a1f3278ae220720ede5b0f416bc2904a

gfx/angle/src/libANGLE/moz.build

@@ -352,6 +352,12 @@ if CONFIG['GNU_CXX']:
             '-Wno-shadow-local',
         ]
 
+if CONFIG['_MSC_VER'] and not CONFIG['CLANG_CL']:
+    CXXFLAGS += [
+        '-wd4018', # '>' : signed/unsigned mismatch
+        '-wd4530', # C++ exception handler used, without /EHsc
+    ]
+
 if CONFIG['MOZ_DIRECTX_SDK_PATH'] and not CONFIG['MOZ_HAS_WINSDK_WITH_D3D']:
     LOCAL_INCLUDES += ['%' + '%s/include/' % CONFIG['MOZ_DIRECTX_SDK_PATH']]