Revert of mac: Remove POSIX shared memory.

content/renderer/media/video_capture_message_filter_unittest.cc

Index: content/renderer/media/video_capture_message_filter_unittest.cc
diff --git a/content/renderer/media/video_capture_message_filter_unittest.cc b/content/renderer/media/video_capture_message_filter_unittest.cc
index 6a339404de1992ffffe46d20675b58439768e9fc..fd189a64e21d83e2a2aa7dff0424e04c915dab20 100644
--- a/content/renderer/media/video_capture_message_filter_unittest.cc
+++ b/content/renderer/media/video_capture_message_filter_unittest.cc
@@ -107,10 +107,6 @@
               OnBufferCreated(
                   ::testing::Property(&base::SharedMemoryHandle::GetHandle, h),
                   100, 1));
-#elif defined(OS_MACOSX) && !defined(OS_IOS)
-  const base::SharedMemoryHandle handle =
-      base::SharedMemoryHandle(10, 100, base::GetCurrentProcId());
-  EXPECT_CALL(delegate, OnBufferCreated(handle, 100, 1));
 #else
   const base::SharedMemoryHandle handle = base::SharedMemoryHandle(10, true);
   EXPECT_CALL(delegate, OnBufferCreated(handle, 100, 1));