Add alaw codec for .wav files.

content/browser/media/media_browsertest.cc

Index: content/browser/media/media_browsertest.cc
===================================================================
--- content/browser/media/media_browsertest.cc	(revision 226034)
+++ content/browser/media/media_browsertest.cc	(working copy)
@@ -168,6 +168,10 @@
   PlayAudio("bear_gsm_ms.wav", GetParam());
 }
 
+IN_PROC_BROWSER_TEST_P(MediaTest, VideoBearWavAlaw) {

[DaleCurtis, 2013/11/05 01:50:18]

Just realized these alaw and mulaw tests were in the ChromeOS specific #if. They
can be moved out to chromium builds now.

[ilja, 2013/11/05 02:26:52]

Moved to general section as discussed.

+  PlayAudio("bear_alaw.wav", GetParam());
+}
+
 IN_PROC_BROWSER_TEST_P(MediaTest, VideoBearWavMulaw) {
   PlayAudio("bear_mulaw.wav", GetParam());
 }