Switch GetWallClockTime to using vectors for input and output.

media/renderers/renderer_impl.cc

Index: media/renderers/renderer_impl.cc
diff --git a/media/renderers/renderer_impl.cc b/media/renderers/renderer_impl.cc
index 30eeb4fc1d88df5fc1b744ea3ddcefbae3dbbd56..d151abed2239ce9a3dc94d36258f293b2fe7dc92 100644
--- a/media/renderers/renderer_impl.cc
+++ b/media/renderers/renderer_impl.cc
@@ -229,16 +229,21 @@ void RendererImpl::EnableClocklessVideoPlaybackForTesting() {
   clockless_video_playback_enabled_for_testing_ = true;
 }
 
-base::TimeTicks RendererImpl::GetWallClockTime(base::TimeDelta time) {
+bool RendererImpl::GetWallClockTime(
+    const std::vector<base::TimeDelta>& media_timestamps,
+    std::vector<base::TimeTicks>* wall_clock_times) {
   // No BelongsToCurrentThread() checking because this can be called from other
   // threads.
   //
   // TODO(scherkus): Currently called from VideoRendererImpl's internal thread,
   // which should go away at some point http://crbug.com/110814
-  if (clockless_video_playback_enabled_for_testing_)
-    return base::TimeTicks::Now();
+  if (clockless_video_playback_enabled_for_testing_) {
+    *wall_clock_times = std::vector<base::TimeTicks>(media_timestamps.size(),
+                                                     base::TimeTicks::Now());
+    return true;
+  }
 
-  return time_source_->GetWallClockTime(time);
+  return time_source_->GetWallClockTime(media_timestamps, wall_clock_times);
 }
 
 void RendererImpl::SetDecryptorReadyCallback(