CMake: exclude SkOSLibrary_posix.cpp on Windows too.

cmake/CMakeLists.txt

 # Boilerplate.
 cmake_minimum_required (VERSION 3.1)   # First version with CMAKE_CXX_STANDARD.
 project (skimake)
 set (CMAKE_CXX_STANDARD 11)
 
 # Default to Release mode.  We're mainly targeting Skia users, not Skia developers.
 if (NOT CMAKE_BUILD_TYPE)
     set (CMAKE_BUILD_TYPE Release)
 endif ()
 
@@ skipping 42 matching lines @@
 
 # Remove OS-specific source files.
 if (NOT WIN32)
     remove_srcs(../src/*XPS*
                 ../src/*_win*.cpp
                 ../src/ports/SkImageDecoder_WIC.cpp
                 ../src/utils/win/*)
 endif()
 if (NOT UNIX)
     remove_srcs(../src/doc/SkDocument_XPS_None.cpp
+                ../src/ports/*_posix.cpp
                 ../src/ports/SkDebug_stdio.cpp
-                ../src/ports/SkOSFile_posix.cpp
                 ../src/ports/SkTLS_pthread.cpp
                 ../src/ports/SkTime_Unix.cpp
                 ../src/utils/SkThreadUtils_pthread.cpp)
 endif()
 if (APPLE OR NOT UNIX)
     remove_srcs(../src/gpu/gl/glx/*
                 ../src/images/SkImageDecoder_FactoryDefault.cpp
                 ../src/ports/SkFontMgr_fontconfig*.cpp
                 ../src/*FreeType*)
 endif()
@@ skipping 175 matching lines @@
     VISIBILITY_INLINES_HIDDEN true)
 
 # Experimental C API install:
 file(GLOB c_headers "../include/c/*.h")
 install(FILES ${c_headers} DESTINATION include)
 install(TARGETS skia DESTINATION lib)
 
 # Now build a simple example app that uses Skia via libskia.so.
 add_executable(example example.cpp)
 target_link_libraries(example skia ${OPENGL_LIBRARIES})