Pass delay and timestamp to AudioSourceCallback::OnMoreData.

base/time/time_posix.cc

Index: base/time/time_posix.cc
diff --git a/base/time/time_posix.cc b/base/time/time_posix.cc
index 495e249f006523cad5e6b8754bb72e604f4f4423..ab2dccb198766e9f3334cf25e9ca23b96cd8d9f3 100644
--- a/base/time/time_posix.cc
+++ b/base/time/time_posix.cc
@@ -110,6 +110,12 @@ int64_t ClockNow(clockid_t clk_id) {
 
 namespace base {
 
+// static
+TimeDelta TimeDelta::FromTimeSpec(const timespec& ts) {
+  return TimeDelta(ts.tv_sec * Time::kMicrosecondsPerSecond +
+                   ts.tv_nsec / Time::kNanosecondsPerMicrosecond);
+}
+
 struct timespec TimeDelta::ToTimeSpec() const {
   int64_t microseconds = InMicroseconds();
   time_t seconds = 0;