Moved media mime type and codec checks to media/base/mime_util.*

media/media.gyp

Index: media/media.gyp
diff --git a/media/media.gyp b/media/media.gyp
index f5e797b61fe5ea05cc3abeccf93be9587a92859d..faf6fa470f9982626be8b9d32ba0ab513b28047e 100644
--- a/media/media.gyp
+++ b/media/media.gyp
@@ -330,6 +330,8 @@
         'base/media_switches.cc',
         'base/media_switches.h',
         'base/media_win.cc',
+        'base/mime_util.cc',
+        'base/mime_util.h',
         'base/moving_average.cc',
         'base/moving_average.h',
         'base/multi_channel_resampler.cc',
@@ -1036,7 +1038,7 @@
             'formats/mpeg/mpeg_audio_stream_parser_base.h',
           ],
         }],
-        ['target_arch=="ia32" or target_arch=="x64"', {
+        ['OS != "ios" and (target_arch=="ia32" or target_arch=="x64")', {
           'dependencies': [
             'media_asm',
             'media_sse2',
@@ -1137,6 +1139,7 @@
         'base/key_systems_unittest.cc',
         'base/mac/video_frame_mac_unittests.cc',
         'base/media_file_checker_unittest.cc',
+        'base/mime_util_unittest.cc',
         'base/moving_average_unittest.cc',
         'base/multi_channel_resampler_unittest.cc',
         'base/null_video_sink_unittest.cc',