Switch to double for time calculations using playback rate.

media/renderers/audio_renderer_impl_unittest.cc

Index: media/renderers/audio_renderer_impl_unittest.cc
diff --git a/media/renderers/audio_renderer_impl_unittest.cc b/media/renderers/audio_renderer_impl_unittest.cc
index 98782c937ceea400601e877ab23f42d01e04ef07..1fe5bdd0a8b3a1e238610a0c2720b4000cccfee2 100644
--- a/media/renderers/audio_renderer_impl_unittest.cc
+++ b/media/renderers/audio_renderer_impl_unittest.cc
@@ -212,7 +212,7 @@ class AudioRendererImplTest : public ::testing::Test {
 
   void StartTicking() {
     renderer_->StartTicking();
-    renderer_->SetPlaybackRate(1.0f);
+    renderer_->SetPlaybackRate(1.0);
   }
 
   void StopTicking() { renderer_->StopTicking(); }
@@ -721,18 +721,18 @@ TEST_F(AudioRendererImplTest, SetPlaybackRate) {
 
   // Rendering hasn't started. Sink should always be paused.
   EXPECT_EQ(FakeAudioRendererSink::kPaused, sink_->state());
-  renderer_->SetPlaybackRate(0.0f);
+  renderer_->SetPlaybackRate(0.0);
   EXPECT_EQ(FakeAudioRendererSink::kPaused, sink_->state());
-  renderer_->SetPlaybackRate(1.0f);
+  renderer_->SetPlaybackRate(1.0);
   EXPECT_EQ(FakeAudioRendererSink::kPaused, sink_->state());
 
   // Rendering has started with non-zero rate. Rate changes will affect sink
   // state.
   renderer_->StartTicking();
   EXPECT_EQ(FakeAudioRendererSink::kPlaying, sink_->state());
-  renderer_->SetPlaybackRate(0.0f);
+  renderer_->SetPlaybackRate(0.0);
   EXPECT_EQ(FakeAudioRendererSink::kPaused, sink_->state());
-  renderer_->SetPlaybackRate(1.0f);
+  renderer_->SetPlaybackRate(1.0);
   EXPECT_EQ(FakeAudioRendererSink::kPlaying, sink_->state());
 
   // Rendering has stopped. Sink should be paused.
@@ -741,10 +741,10 @@ TEST_F(AudioRendererImplTest, SetPlaybackRate) {
 
   // Start rendering with zero playback rate. Sink should be paused until
   // non-zero rate is set.
-  renderer_->SetPlaybackRate(0.0f);
+  renderer_->SetPlaybackRate(0.0);
   renderer_->StartTicking();
   EXPECT_EQ(FakeAudioRendererSink::kPaused, sink_->state());
-  renderer_->SetPlaybackRate(1.0f);
+  renderer_->SetPlaybackRate(1.0);
   EXPECT_EQ(FakeAudioRendererSink::kPlaying, sink_->state());
 }