media/gpu/vaapi: Log called libva functions in debug mode only

crrev.com/c/1967217 drops the performance in VP9 720P ARC++ test,
approximately from 110fps to 90fps.

Bug: b:146842665, b:147642583
Test: android.media.cts.VideoDecoderPerfTest#testVp9Other0Perf1280x0720 on coral
Change-Id: Ie1911c60a0f79c703a84d025823424cebdbd3723
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2022563Reviewed-by: Miguel Casas <mcasas@chromium.org>
Commit-Queue: Hirokazu Honda <hiroh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#735689}

media/gpu/vaapi/vaapi_wrapper.cc

@@ -95,9 +95,8 @@ using media_gpu_vaapi::StubPathMap;
     if ((va_error) != VA_STATUS_SUCCESS) {        \
       LOG_VA_ERROR_AND_REPORT(va_error, name);    \
       return (ret);                               \
-    } else {                                      \
-      VLOG(1) << name;                            \
     }                                             \
+    DVLOG(3) << name;                             \
   } while (0)
 
 namespace {