fix linux build by making sure APICALL is defined on
all platforms

TBR=jeremy

Review URL: http://codereview.chromium.org/8805


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@4028 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/port.h b/base/port.h
index 9681ce86..349b117 100644
--- a/base/port.h
+++ b/base/port.h
@@ -56,10 +56,10 @@
 #define DYNAMIC_EXPORT __declspec(dllexport)
 #elif defined(OS_MACOSX)
 #define DYNAMIC_EXPORT __attribute__((visibility("default")))
+#define API_CALL
 #elif defined(OS_LINUX)
 #define DYNAMIC_EXPORT
-#elif defined(OS_POSIX)
-#define API_CALL 
+#define API_CALL
 #endif
 
 #endif  // BASE_PORT_H_