IPC to pass media data using a lock free circular fifo.

chromecast/media/media.gyp

Index: chromecast/media/media.gyp
diff --git a/chromecast/media/media.gyp b/chromecast/media/media.gyp
index 75f0547d30fcd720ad78e20cbbce1f128e42baa3..f57033b1b467cf86ff21739d9a04c74bd696e255 100644
--- a/chromecast/media/media.gyp
+++ b/chromecast/media/media.gyp
@@ -31,10 +31,26 @@
       ],
     },
     {
+      'target_name': 'cma_ipc',
+      'type': '<(component)',
+      'dependencies': [
+        '../../base/base.gyp:base',
+      ],
+      'sources': [
+        'cma/ipc/media_memory_chunk.cc',
+        'cma/ipc/media_memory_chunk.h',
+        'cma/ipc/media_message.cc',
+        'cma/ipc/media_message.h',
+        'cma/ipc/media_message_fifo.cc',
+        'cma/ipc/media_message_fifo.h',
+      ],
+    },
+    {
       'target_name': 'cast_media',
       'type': 'none',
       'dependencies': [
         'cma_base',
+        'cma_ipc',
       ],
     },
     {
@@ -53,6 +69,8 @@
         'cma/base/balanced_media_task_runner_unittest.cc',
         'cma/base/buffering_controller_unittest.cc',
         'cma/base/run_all_unittests.cc',
+        'cma/ipc/media_message_fifo_unittest.cc',
+        'cma/ipc/media_message_unittest.cc',
       ],
     },
   ],