Revert "Factor out xcode c/cpp settings into variables to apply to cmake builds."

gyp/common_conditions.gypi

Index: gyp/common_conditions.gypi
diff --git a/gyp/common_conditions.gypi b/gyp/common_conditions.gypi
index 11f98bd28d62eea9c1f30f73268fda5e7135c8e2..859577e1a330bd13b44119563554a79a0ba16f18 100644
--- a/gyp/common_conditions.gypi
+++ b/gyp/common_conditions.gypi
@@ -476,28 +476,6 @@
 
     [ 'skia_os == "mac"',
       {
-        'variables': {
-            # Setup some flags that are used below in both the XCode/ninja build as well as the
-            # cmake build.
-            'common_c_and_cpp_flags': [
-              '-mssse3',
-              '-fvisibility=hidden',
-              '-fvisibility-inlines-hidden',
-              '-Wall',
-              '-Wextra',
-              '-Winit-self',
-              '-Wpointer-arith',
-              '-Wsign-compare',
-              '-Wno-unused-parameter',
-            ],
-            'common_cpp_flags': [
-              '-fno-threadsafe-statics',
-              '-fno-exceptions',
-              '-fno-rtti',
-              '-std=c++11',
-              '-stdlib=libc++'
-            ],
-        },
         'defines': [ 'SK_BUILD_FOR_MAC' ],
         'conditions': [
             # ANGLE for mac hits -Wunneeded-internal-declaration if this isn't set.
@@ -531,15 +509,13 @@
               'MACOSX_DEPLOYMENT_TARGET': '<(skia_osx_deployment_target)',
             }],
             [ 'skia_sanitizer', {
+              'GCC_ENABLE_CPP_RTTI': 'YES',                         # vptr needs rtti
               'OTHER_CFLAGS': [
                 '-fsanitize=<(skia_sanitizer)',                     # Turn on sanitizers.
                 '-fno-sanitize-recover=<(skia_sanitizer)',          # Make any failure fatal.
                 '-fsanitize-blacklist=<(skia_sanitizer_blacklist)', # Compile in our blacklist.
                 '-include <(skia_sanitizer_blacklist)',             # Make every .cpp depend on it.
               ],
-              'OTHER_CPLUSPLUSFLAGS': [
-                '-frtti',                                           # vptr needs rtti
-              ],
               # We want to pass -fsanitize=... to our final link call,
               # but not to libtool. OTHER_LDFLAGS is passed to both.
               # To trick GYP into doing what we want, we'll piggyback on
@@ -549,24 +525,25 @@
             }],
           ],
           'CLANG_CXX_LIBRARY':                         'libc++',
+          'CLANG_CXX_LANGUAGE_STANDARD':               'c++11',
+          'GCC_ENABLE_CPP_EXCEPTIONS':                 'NO',   # -fno-exceptions
+          'GCC_ENABLE_CPP_RTTI':                       'NO',   # -fno-rtti
+          'GCC_THREADSAFE_STATICS':                    'NO',   # -fno-threadsafe-statics
+          'GCC_ENABLE_SUPPLEMENTAL_SSE3_INSTRUCTIONS': 'YES',  # -mssse3
+          'GCC_SYMBOLS_PRIVATE_EXTERN':                'NO',   # -fvisibility=hidden
+          'GCC_INLINES_ARE_PRIVATE_EXTERN':            'NO',   # -fvisibility-inlines-hidden
           'GCC_CW_ASM_SYNTAX':                         'NO',   # remove -fasm-blocks
           'GCC_ENABLE_PASCAL_STRINGS':                 'NO',   # remove -mpascal-strings
-          # Used by XCode and ninja
-          'OTHER_CPLUSPLUSFLAGS': [
-            '<@(common_cpp_flags)',
-            '<@(common_c_and_cpp_flags)',
-          ],
-          'OTHER_CFLAGS': [
-            '<@(common_c_and_cpp_flags)',
+          'WARNING_CFLAGS': [
+            '-Wall',
+            '-Wextra',
+            '-Winit-self',
+            '-Wpointer-arith',
+            '-Wsign-compare',
+
+            '-Wno-unused-parameter',
           ],
         },
-        # Used by cmake
-        'cflags': [
-          '<@(common_c_and_cpp_flags)',
-        ],
-        'cflags_cc': [
-          '<@(common_cpp_flags)',
-        ],
       },
     ],