Revert "Chromium changes to statically link ffmpeg."

media/cast/sender/audio_encoder_unittest.cc

Index: media/cast/sender/audio_encoder_unittest.cc
diff --git a/media/cast/sender/audio_encoder_unittest.cc b/media/cast/sender/audio_encoder_unittest.cc
index 3b623fe9f55fa2f8cad4cd15e994643fb2391a2f..12b5f2c87fdaf2e631e3c4455b6af801182a05a0 100644
--- a/media/cast/sender/audio_encoder_unittest.cc
+++ b/media/cast/sender/audio_encoder_unittest.cc
@@ -95,7 +95,7 @@ struct TestScenario {
 class AudioEncoderTest : public ::testing::TestWithParam<TestScenario> {
  public:
   AudioEncoderTest() {
-    InitializeMediaLibrary();
+    InitializeMediaLibraryForTesting();
     testing_clock_ = new base::SimpleTestTickClock();
     testing_clock_->Advance(base::TimeTicks::Now() - base::TimeTicks());
   }