linux: remove no_strict_aliasing gyp variable

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index c2cc6d498a12dae04fab351e6540b264708aa84e..d6b607114f2d6ffbd457ad776f914717c8dabe1a 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -1660,8 +1660,6 @@
         # Enable -Werror by default, but put it in a variable so it can
         # be disabled in ~/.gyp/include.gypi on the valgrind builders.
         'variables': {
-          # Use -fno-strict-aliasing, see http://crbug.com/32204
-          'no_strict_aliasing%': 1,
           'conditions': [
             ['OS=="linux"', {
               'werror%': '-Werror',
@@ -1674,6 +1672,7 @@
           '<(werror)',  # See note above about the werror variable.
           '-pthread',
           '-fno-exceptions',
+          '-fno-strict-aliasing',  # See http://crbug.com/32204
           '-Wall',
           # TODO(evan): turn this back on once all the builds work.
           # '-Wextra',
@@ -2047,11 +2046,6 @@
               'ADDRESS_SANITIZER',
             ],
           }],
-          ['no_strict_aliasing==1', {
-            'cflags': [
-              '-fno-strict-aliasing',
-            ],
-          }],
           ['linux_breakpad==1', {
             'cflags': [ '-g' ],
             'defines': ['USE_LINUX_BREAKPAD'],