Revert "Add msan build option." (r22109)

build/standalone.gypi

Index: build/standalone.gypi
diff --git a/build/standalone.gypi b/build/standalone.gypi
index 92b5ff83097991fe078a983bcd0ab22544c019a4..cf448f38673559de322e675b5500f8de6e1905e0 100644
--- a/build/standalone.gypi
+++ b/build/standalone.gypi
@@ -35,7 +35,6 @@
     'component%': 'static_library',
     'clang%': 0,
     'asan%': 0,
-    'msan%': 0,
     'visibility%': 'hidden',
     'v8_enable_backtrace%': 0,
     'v8_enable_i18n_support%': 1,
@@ -186,22 +185,6 @@
         ],
       },
     }],
-    ['msan==1', {
-      'target_defaults': {
-        'cflags_cc+': [
-          '-fno-omit-frame-pointer',
-          '-fsanitize-memory-track-origins=2',
-          '-fsanitize=memory',
-          '-w',  # http://crbug.com/162783
-        ],
-        'cflags_cc!': [
-          '-fomit-frame-pointer',
-        ],
-        'ldflags': [
-          '-fsanitize=memory',
-        ],
-      },
-    }],
     ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris" \
        or OS=="netbsd"', {
       'target_defaults': {