Bring back libyuv's I010 buffer API usage

libyuv contains now functions that were previously commented out.

Test: Cuttlefish webRTC video streaming with VP9 codec

Change-Id: I86edca36c809f80b041addde82e0e1ed7da83701
diff --git a/api/video/i010_buffer.cc b/api/video/i010_buffer.cc
index df43d78..7286676 100644
--- a/api/video/i010_buffer.cc
+++ b/api/video/i010_buffer.cc
@@ -66,16 +66,12 @@
   const int width = source.width();
   const int height = source.height();
   rtc::scoped_refptr<I010Buffer> buffer = Create(width, height);
-#if 0
   RTC_CHECK_EQ(
       0, libyuv::I010Copy(
              source.DataY(), source.StrideY(), source.DataU(), source.StrideU(),
              source.DataV(), source.StrideV(), buffer->MutableDataY(),
              buffer->StrideY(), buffer->MutableDataU(), buffer->StrideU(),
              buffer->MutableDataV(), buffer->StrideV(), width, height));
-#else
-  abort();
-#endif
   return buffer;
 }
 
@@ -85,16 +81,12 @@
   const int width = source.width();
   const int height = source.height();
   rtc::scoped_refptr<I010Buffer> buffer = Create(width, height);
-#if 0
   RTC_CHECK_EQ(
       0, libyuv::I420ToI010(
              source.DataY(), source.StrideY(), source.DataU(), source.StrideU(),
              source.DataV(), source.StrideV(), buffer->MutableDataY(),
              buffer->StrideY(), buffer->MutableDataU(), buffer->StrideU(),
              buffer->MutableDataV(), buffer->StrideV(), width, height));
-#else
-  abort();
-#endif
   return buffer;
 }
 
@@ -158,15 +150,11 @@
 rtc::scoped_refptr<I420BufferInterface> I010Buffer::ToI420() {
   rtc::scoped_refptr<I420Buffer> i420_buffer =
       I420Buffer::Create(width(), height());
-#if 0
   libyuv::I010ToI420(DataY(), StrideY(), DataU(), StrideU(), DataV(), StrideV(),
                      i420_buffer->MutableDataY(), i420_buffer->StrideY(),
                      i420_buffer->MutableDataU(), i420_buffer->StrideU(),
                      i420_buffer->MutableDataV(), i420_buffer->StrideV(),
                      width(), height());
-#else
-  abort();
-#endif
   return i420_buffer;
 }