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

components/BUILD.gn

Index: components/BUILD.gn
diff --git a/components/BUILD.gn b/components/BUILD.gn
index 700e862fdf8b42af5a87be903587765d9377c2e5..12c7e60f0d656db7b13881a974b5475ddd528de4 100644
--- a/components/BUILD.gn
+++ b/components/BUILD.gn
@@ -302,6 +302,10 @@ test("components_unittests") {
   ]
   data_deps = [ ":components_tests_pak" ]
 
+  if (!is_ios) {
+    deps += [ "//media" ]

[ddorwin, 2015/05/14 18:09:59]

Why do we need this dependency at all here? We have it in c/mime_util/ too.

[servolk, 2015/05/14 22:30:49]

Probably not anymore. I've added this dependency in patchset #10 and that fixed
compilation on ios_dbg_simulator_ninja trybot. But now that mime_util doesn't
depend on //media on iOS that's probably unnecessary, I'll remove it and will
rerun trybots.

+  }
+
   if (!is_android && !is_ios) {
     deps += [ "//components/proximity_auth:unit_tests" ]
   }