Turn the volume range check into a bail out return to prevent browser crash....

media/audio/audio_util.cc

Index: media/audio/audio_util.cc
===================================================================
--- media/audio/audio_util.cc	(revision 70339)
+++ media/audio/audio_util.cc	(working copy)
@@ -93,7 +93,8 @@
                   int bytes_per_sample,
                   float volume) {
   DCHECK(buf);
-  DCHECK(volume >= 0.0f && volume <= 1.0f);
+  if (volume < 0.0f || volume > 1.0f)
+      return false;
   if (volume == 1.0f) {
     return true;
   } else if (volume == 0.0f) {
@@ -129,7 +130,8 @@
                   int bytes_per_sample,
                   float volume) {
   DCHECK(buf);
-  DCHECK(volume >= 0.0f && volume <= 1.0f);
+  if (volume < 0.0f || volume > 1.0f)
+      return false;
   if (channels > 2 && channels <= 8 && bytes_per_sample > 0) {
     int sample_count = buflen / (channels * bytes_per_sample);
     if (bytes_per_sample == 1) {