Make default media::Renderer::playback_rate = 0.

media/base/time_delta_interpolator_unittest.cc

Index: media/base/time_delta_interpolator_unittest.cc
diff --git a/media/base/time_delta_interpolator_unittest.cc b/media/base/time_delta_interpolator_unittest.cc
index 04ee8f747cbaed68a1ce7839cb1891fb04bb7e56..f8bf51fa6e14a5f73b7bb306021b9ec219bb59b7 100644
--- a/media/base/time_delta_interpolator_unittest.cc
+++ b/media/base/time_delta_interpolator_unittest.cc
@@ -11,7 +11,9 @@ namespace media {
 
 class TimeDeltaInterpolatorTest : public ::testing::Test {
  public:
-  TimeDeltaInterpolatorTest() : interpolator_(&test_tick_clock_) {}
+  TimeDeltaInterpolatorTest() : interpolator_(&test_tick_clock_) {
+    interpolator_.SetPlaybackRate(1.0);
+  }
 
  protected:
   void AdvanceSystemTime(base::TimeDelta delta) {