Add proper dependencies for webrtc/modules/audio_coding/codecs

The audio_decoder_interface and audio_encoder_interface
targets are depending on rtc_base_approved headers but don't
declare such dependencies.

NOTRY=True

Review URL: https://codereview.webrtc.org/1916953002

Cr-Commit-Position: refs/heads/master@{#12500}

webrtc/modules/audio_coding/codecs/interfaces.gypi

@@ -15,6 +15,10 @@
         'audio_decoder.cc',
         'audio_decoder.h',
       ],
+      'dependencies': [
+        '<(webrtc_root)/base/base.gyp:rtc_base_approved',
+        '<(webrtc_root)/common.gyp:webrtc_common',
+      ],
     },
 
     {
@@ -24,6 +28,10 @@
         'audio_encoder.cc',
         'audio_encoder.h',
       ],
+      'dependencies': [
+        '<(webrtc_root)/base/base.gyp:rtc_base_approved',
+        '<(webrtc_root)/common.gyp:webrtc_common',
+      ],
     },
   ],
 }