Move isacfix.gypi and isac.gypi

Move webrtc/modules/audio_coding/codecs/isac/fix/source/isacfix.gypi
and webrtc/modules/audio_coding/codecs/isac/main/source/isac.gypi to
webrtc/modules/audio_coding/codecs/isac to pass recently
added _CheckNoSourcesAboveGyp presubmit rule.

BUG=4002
R=tina.legrand@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/37269004

Cr-Commit-Position: refs/heads/master@{#8376}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8376 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/audio_coding.gypi b/webrtc/modules/audio_coding/audio_coding.gypi
index 0a500d9..8f5927b 100644
--- a/webrtc/modules/audio_coding/audio_coding.gypi
+++ b/webrtc/modules/audio_coding/audio_coding.gypi
@@ -14,8 +14,8 @@
     'codecs/g711/g711.gypi',
     'codecs/g722/g722.gypi',
     'codecs/ilbc/ilbc.gypi',
-    'codecs/isac/main/source/isac.gypi',
-    'codecs/isac/fix/source/isacfix.gypi',
+    'codecs/isac/isac.gypi',
+    'codecs/isac/isacfix.gypi',
     'codecs/pcm16b/pcm16b.gypi',
     'codecs/red/red.gypi',
     'main/acm2/audio_coding_module.gypi',