Do for icui18n what rr291699 did for icuuc.

TBR=rnk@chromium.org

Review URL: https://codereview.chromium.org/515263002

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/icu52@291706 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
diff --git a/icu.gyp b/icu.gyp
index 910a88a..7e5432b 100644
--- a/icu.gyp
+++ b/icu.gyp
@@ -232,6 +232,19 @@
                     '-fno-builtin-sin',
                 ],
             }],
+            [ 'OS == "win" and clang==1', {
+              # Note: General clang warnings should go in the
+              # clang_warning_flags block above.
+              'msvs_settings': {
+                'VCCLCompilerTool': {
+                  'AdditionalOptions': [
+                    # See http://bugs.icu-project.org/trac/ticket/11122
+                    '-Wno-inline-new-delete',
+                    '-Wno-implicit-exception-spec-mismatch',
+                  ],
+                },
+              },
+            }],
             ['OS == "android" and use_system_stlport == 1', {
               'target_conditions': [
                 ['_toolset == "target"', {