Build WTF as dll in component build

Source/wtf/wtf.gyp

Index: Source/wtf/wtf.gyp
diff --git a/Source/wtf/wtf.gyp b/Source/wtf/wtf.gyp
index f42496ce720d6bb274d49e7ad22d8479f3300158..59115d50ec647b8e2838576fafce86fe35b88ffa 100644
--- a/Source/wtf/wtf.gyp
+++ b/Source/wtf/wtf.gyp
@@ -74,22 +74,21 @@
     },
     {
       'target_name': 'wtf',
-      'type': 'static_library',
+      'type': '<(component)',
       'include_dirs': [
         '..',
-        '../Platform/chromium'
       ],
       'dependencies': [
           'wtf_config',
           '<(DEPTH)/third_party/icu/icu.gyp:icui18n',
           '<(DEPTH)/third_party/icu/icu.gyp:icuuc',
       ],
-      'defines': [
-          'WEBKIT_IMPLEMENTATION=1',
-      ],
       'sources': [
         '<@(wtf_files)',
       ],
+      'defines': [
+        'WTF_IMPLEMENTATION=1',
+      ],
       'direct_dependent_settings': {
         'include_dirs': [
           '..',
@@ -140,7 +139,14 @@
             ['exclude', 'Win\\.cpp$'],
           ],
         }],
-        ['OS!="mac"', {
+        ['OS=="mac"', {
+          'link_settings': {
+            'libraries': [
+              '$(SDKROOT)/System/Library/Frameworks/CoreFoundation.framework',
+              '$(SDKROOT)/System/Library/Frameworks/Foundation.framework',
+            ]
+          }
+        }, { # OS!="mac"
           'sources/': [
             ['exclude', 'Mac\\.mm$'],
             # mac is the only OS that uses WebKit's copy of TCMalloc.