Android: Fix incorrect sign on kMinScale in audio decoder.

webkit/media/android/audio_decoder_android.cc

Index: webkit/media/android/audio_decoder_android.cc
diff --git a/webkit/media/android/audio_decoder_android.cc b/webkit/media/android/audio_decoder_android.cc
index 8bab50ab282f33202996f8e70a6c3529de62d59f..6cc52c9636b8c94948ab25dd1496235b692853ba 100644
--- a/webkit/media/android/audio_decoder_android.cc
+++ b/webkit/media/android/audio_decoder_android.cc
@@ -180,7 +180,7 @@ bool DecodeAudioFileData(WebKit::WebAudioBus* destination_bus, const char* data,
 
   size_t decoded_frames = 0;
   const float kMaxScale = 1.0f / std::numeric_limits<int16_t>::max();
-  const float kMinScale = 1.0f / std::numeric_limits<int16_t>::min();
+  const float kMinScale = -1.0f / std::numeric_limits<int16_t>::min();
 
   for (size_t m = 0; m < number_of_samples; m += number_of_channels) {
     for (size_t k = 0; k < number_of_channels; ++k) {