Convert media constants to constexpr.

media/base/android/media_decoder_job.cc

Index: media/base/android/media_decoder_job.cc
diff --git a/media/base/android/media_decoder_job.cc b/media/base/android/media_decoder_job.cc
index c1c56042b79dae82dcaf4e75ba6eeceffc2f266b..efbbea8f47b6afd69cc92b8cf90860a7a9d418bb 100644
--- a/media/base/android/media_decoder_job.cc
+++ b/media/base/android/media_decoder_job.cc
@@ -88,7 +88,7 @@ void MediaDecoderJob::OnDataReceived(const DemuxerData& data) {
 
   if (stop_decode_pending_) {
     DCHECK(is_decoding());
-    OnDecodeCompleted(MEDIA_CODEC_ABORT, false, kNoTimestamp(), kNoTimestamp());
+    OnDecodeCompleted(MEDIA_CODEC_ABORT, false, kNoTimestamp, kNoTimestamp);
     return;
   }
 
@@ -352,9 +352,10 @@ void MediaDecoderJob::DecodeCurrentAccessUnit(
             need_to_reconfig_decoder_job_ || reconfigure_needed;
         // Report MEDIA_CODEC_OK status so decoder will continue decoding and
         // MEDIA_CODEC_OUTPUT_FORMAT_CHANGED status will come later.
-        ui_task_runner_->PostTask(FROM_HERE, base::Bind(
-            &MediaDecoderJob::OnDecodeCompleted, base::Unretained(this),
-            MEDIA_CODEC_OK, false, kNoTimestamp(), kNoTimestamp()));
+        ui_task_runner_->PostTask(
+            FROM_HERE, base::Bind(&MediaDecoderJob::OnDecodeCompleted,
+                                  base::Unretained(this), MEDIA_CODEC_OK, false,
+                                  kNoTimestamp, kNoTimestamp));
         return;
       }
       // Start draining the decoder so that all the remaining frames are
@@ -390,7 +391,7 @@ void MediaDecoderJob::DecodeInternal(
     input_buf_index_ = -1;
     MediaCodecStatus flush_status = media_codec_bridge_->Flush();
     if (flush_status != MEDIA_CODEC_OK) {
-      callback.Run(flush_status, false, kNoTimestamp(), kNoTimestamp());
+      callback.Run(flush_status, false, kNoTimestamp, kNoTimestamp);
       return;
     }
   }
@@ -402,7 +403,7 @@ void MediaDecoderJob::DecodeInternal(
 
   // For aborted access unit, just skip it and inform the player.
   if (unit.status == DemuxerStream::kAborted) {
-    callback.Run(MEDIA_CODEC_ABORT, false, kNoTimestamp(), kNoTimestamp());
+    callback.Run(MEDIA_CODEC_ABORT, false, kNoTimestamp, kNoTimestamp);
     return;
   }
 
@@ -410,8 +411,8 @@ void MediaDecoderJob::DecodeInternal(
     if (unit.is_end_of_stream || unit.data.empty()) {
       input_eos_encountered_ = true;
       output_eos_encountered_ = true;
-      callback.Run(MEDIA_CODEC_OUTPUT_END_OF_STREAM, false, kNoTimestamp(),
-                   kNoTimestamp());
+      callback.Run(MEDIA_CODEC_OUTPUT_END_OF_STREAM, false, kNoTimestamp,
+                   kNoTimestamp);
       return;
     }
 
@@ -428,7 +429,7 @@ void MediaDecoderJob::DecodeInternal(
       // change can be resolved. Context: b/21786703
       DVLOG(1) << "dequeueInputBuffer gave AGAIN_LATER, dequeue output buffers";
     } else if (input_status != MEDIA_CODEC_OK) {
-      callback.Run(input_status, false, kNoTimestamp(), kNoTimestamp());
+      callback.Run(input_status, false, kNoTimestamp, kNoTimestamp);
       return;
     }
   }
@@ -466,7 +467,7 @@ void MediaDecoderJob::DecodeInternal(
            status != MEDIA_CODEC_DEQUEUE_OUTPUT_AGAIN_LATER);
 
   if (status != MEDIA_CODEC_OK) {
-    callback.Run(status, false, kNoTimestamp(), kNoTimestamp());
+    callback.Run(status, false, kNoTimestamp, kNoTimestamp);
     return;
   }
 
@@ -507,7 +508,7 @@ void MediaDecoderJob::DecodeInternal(
     presentation_timestamp = std::max(
         presentation_timestamp, start_presentation_timestamp);
   } else {
-    presentation_timestamp = kNoTimestamp();
+    presentation_timestamp = kNoTimestamp;
   }
 
   const bool is_late_frame = (time_to_render < base::TimeDelta());
@@ -534,7 +535,7 @@ void MediaDecoderJob::OnDecodeCompleted(
   DCHECK(!decode_cb_.is_null());
 
   // If output was queued for rendering, then we have completed prerolling.
-  if (current_presentation_timestamp != kNoTimestamp() ||
+  if (current_presentation_timestamp != kNoTimestamp ||
       status == MEDIA_CODEC_OUTPUT_END_OF_STREAM) {
     prerolling_ = false;
   }