Disable flaky TestVp9Impl.EncodeDecode for iOS.

webrtc/modules/video_coding/codecs/vp9/test/vp9_impl_unittest.cc

Index: webrtc/modules/video_coding/codecs/vp9/test/vp9_impl_unittest.cc
diff --git a/webrtc/modules/video_coding/codecs/vp9/test/vp9_impl_unittest.cc b/webrtc/modules/video_coding/codecs/vp9/test/vp9_impl_unittest.cc
index 823543d325b365e4560c19592ab795e1878596db..bb453bd58252905869d3ee2f87382f2376d28f91 100644
--- a/webrtc/modules/video_coding/codecs/vp9/test/vp9_impl_unittest.cc
+++ b/webrtc/modules/video_coding/codecs/vp9/test/vp9_impl_unittest.cc
@@ -29,7 +29,12 @@ class TestVp9Impl : public VideoCodecTest {
   }
 };
 
+// Disabled on ios as flake, see https://crbug.com/webrtc/7057
+#if defined(WEBRTC_IOS)
+TEST_F(TestVp9Impl, DISABLED_EncodeDecode) {
+#else
 TEST_F(TestVp9Impl, EncodeDecode) {
+#endif
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
             encoder_->Encode(*input_frame_, nullptr, nullptr));
   EncodedImage encoded_frame;