Switch GetWallClockTime to using vectors for input and output.

media/renderers/renderer_impl.h

Index: media/renderers/renderer_impl.h
diff --git a/media/renderers/renderer_impl.h b/media/renderers/renderer_impl.h
index 79118488e2944107d0a43de545cbe9ba95fff573..c44ece6c012be7f5bd4262e7d7b0e6ba3119325f 100644
--- a/media/renderers/renderer_impl.h
+++ b/media/renderers/renderer_impl.h
@@ -5,6 +5,8 @@
 #ifndef MEDIA_RENDERERS_RENDERER_IMPL_H_
 #define MEDIA_RENDERERS_RENDERER_IMPL_H_
 
+#include <vector>
+
 #include "base/cancelable_callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ -80,7 +82,8 @@ class MEDIA_EXPORT RendererImpl : public Renderer {
     STATE_ERROR
   };
 
-  base::TimeTicks GetWallClockTime(base::TimeDelta time);
+  bool GetWallClockTime(const std::vector<base::TimeDelta>& media_timestamps,
+                        std::vector<base::TimeTicks>* wall_clock_times);
 
   // Requests that this object notifies when a decryptor is ready through the
   // |decryptor_ready_cb| provided.