Move functionality out from AudioFrame and into AudioFrameOperations.

webrtc/modules/utility/utility.gypi

Index: webrtc/modules/utility/utility.gypi
diff --git a/webrtc/modules/utility/utility.gypi b/webrtc/modules/utility/utility.gypi
index eb50bb6ec75ecb6919d09777fa7badfd92d966b1..5bbf2fd772400f610f840eb66fefe4b27703f1d5 100644
--- a/webrtc/modules/utility/utility.gypi
+++ b/webrtc/modules/utility/utility.gypi
@@ -13,7 +13,9 @@
       'type': 'static_library',
       'dependencies': [
         'audio_coding_module',
+        'builtin_audio_decoder_factory',
         'media_file',
+        'rent_a_codec',
         '<(webrtc_root)/base/base.gyp:rtc_task_queue',
         '<(webrtc_root)/common_audio/common_audio.gyp:common_audio',
         '<(webrtc_root)/system_wrappers/system_wrappers.gyp:system_wrappers',
@@ -38,5 +40,15 @@
         'source/process_thread_impl.h',
       ],
     },
+
+    # GN target webrtc/modules/utility:audio_frame_operations
+    {
+      'target_name': 'audio_frame_operations',
+      'type': 'static_library',
+      'dependencies': [
+        '<(webrtc_root)/base/base.gyp:rtc_base_approved',
+        '<(webrtc_root)/common.gyp:webrtc_common',
+      ]
+    },
   ], # targets
 }