FFmpeg in-tree build for mac.

DEPS

 vars = {
   "webkit_trunk":
     "http://svn.webkit.org/repository/webkit/trunk",
   "webkit_revision": "50516",
   "ffmpeg_revision": "30374",
 }
 
 deps = {
   "src/breakpad/src":
     "http://google-breakpad.googlecode.com/svn/trunk/src@417",
@@ skipping 19 matching lines @@
   "src/third_party/hunspell":
    "/trunk/deps/third_party/hunspell128@30191",
 
   "src/third_party/protobuf2/src":
     "http://protobuf.googlecode.com/svn/trunk@219",
 
   "src/third_party/pywebsocket":
     "http://pywebsocket.googlecode.com/svn/trunk/src@86",
 
   "src/tools/gyp":
-    "http://gyp.googlecode.com/svn/trunk@740",
+    "http://gyp.googlecode.com/svn/trunk@741",
 
   "src/v8":
     "http://v8.googlecode.com/svn/trunk@3203",
 
   "src/native_client":
     "http://nativeclient.googlecode.com/svn/trunk/src/native_client@915",
 
   "src/third_party/skia/src":
     "http://skia.googlecode.com/svn/trunk/src@404",
 
@@ skipping 72 matching lines @@
   "mac": {
     "src/third_party/GTM":
       "http://google-toolbox-for-mac.googlecode.com/svn/trunk@241",
     "src/third_party/pdfsqueeze":
       "http://pdfsqueeze.googlecode.com/svn/trunk@2",
     "src/third_party/WebKit/WebKit/mac":
       Var("webkit_trunk") + "/WebKit/mac@" + Var("webkit_revision"),
     "src/third_party/WebKit/WebKitLibraries":
       Var("webkit_trunk") + "/WebKitLibraries@" + Var("webkit_revision"),
 
+    # TODO(ajwong): Move this into the OS-independent block.
+    "src/third_party/yasm/source/patched-yasm":
+      "/trunk/deps/third_party/yasm/patched-yasm@29937",
+    "src/third_party/ffmpeg/source/patched-ffmpeg-mt":
+      "/trunk/deps/third_party/ffmpeg/patched-ffmpeg-mt@" +
+      Var("ffmpeg_revision"),
+
     "src/third_party/ffmpeg/binaries/chromium/mac/ia32":
       "/trunk/deps/third_party/ffmpeg/binaries/mac@" + Var("ffmpeg_revision"),
     "src/third_party/ffmpeg/binaries/chromium/mac/ia32_dbg":
       "/trunk/deps/third_party/ffmpeg/binaries/mac_dbg@" +
       Var("ffmpeg_revision"),
   },
   "unix": {
     # Linux, really.
     "src/third_party/xdg-utils":
       "/trunk/deps/third_party/xdg-utils@29103",
 
+    # TODO(ajwong): Move this into the OS-independent block.
     "src/third_party/yasm/source/patched-yasm":
       "/trunk/deps/third_party/yasm/patched-yasm@29937",
-
     "src/third_party/ffmpeg/source/patched-ffmpeg-mt":
       "/trunk/deps/third_party/ffmpeg/patched-ffmpeg-mt@" +
       Var("ffmpeg_revision"),
 
     "src/third_party/ffmpeg/binaries/chromium/linux/ia32":
       "/trunk/deps/third_party/ffmpeg/binaries/linux@" +
       Var("ffmpeg_revision"),
     "src/third_party/ffmpeg/binaries/chromium/linux/ia32_dbg":
       "/trunk/deps/third_party/ffmpeg/binaries/linux_dbg@" +
       Var("ffmpeg_revision"),
@@ skipping 54 matching lines @@
                "$matching_files"],
   },
   {
     # Workaround XCode dependecies problem.
     # TODO(bradnelson): remove this when fixed.
     "pattern": ".",
     "action": ["python",
                "src/build/mac/clobber_generated_headers.py"],
   },
 ]