Remove two static initializers (media/base/{buffers,media_log}.cc)

media/base/buffers.h

Index: media/base/buffers.h
diff --git a/media/base/buffers.h b/media/base/buffers.h
index 400eaf7a6229d4d64025eba72d7d71806427ec97..83bebb8c483b51f4207511c9466584da7d2deecf 100644
--- a/media/base/buffers.h
+++ b/media/base/buffers.h
@@ -35,10 +35,14 @@
 namespace media {
 
 // Indicates an invalid or missing timestamp.
-MEDIA_EXPORT extern const base::TimeDelta kNoTimestamp;
+MEDIA_EXPORT extern inline base::TimeDelta kNoTimestamp() {
+  return base::TimeDelta::FromMicroseconds(kint64min);
+}
 
 // Represents an infinite stream duration.
-MEDIA_EXPORT extern const base::TimeDelta kInfiniteDuration;
+MEDIA_EXPORT extern inline base::TimeDelta kInfiniteDuration() {
+  return base::TimeDelta::FromMicroseconds(kint64max);
+}
 
 class MEDIA_EXPORT StreamSample
     : public base::RefCountedThreadSafe<StreamSample> {