Add AudioStreamRegistry. Move stream counting logic

content/browser/renderer_host/media/audio_input_renderer_host_unittest.cc

Index: content/browser/renderer_host/media/audio_input_renderer_host_unittest.cc
diff --git a/content/browser/renderer_host/media/audio_input_renderer_host_unittest.cc b/content/browser/renderer_host/media/audio_input_renderer_host_unittest.cc
index 468639210018dfa3c2153d97903d574e41a83c35..6b8d7f408d7088b147f3ed2df10b2d2d8da61f41 100644
--- a/content/browser/renderer_host/media/audio_input_renderer_host_unittest.cc
+++ b/content/browser/renderer_host/media/audio_input_renderer_host_unittest.cc
@@ -4,6 +4,7 @@
 
 #include "content/browser/renderer_host/media/audio_input_renderer_host.h"
 
+#include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ -52,11 +53,13 @@ const int kRendererPid = 21718;
 const int kRenderFrameId = 31415;
 const int kSharedMemoryCount = 11;
 const char kSecurityOrigin[] = "http://localhost";
+#if BUILDFLAG(ENABLE_WEBRTC)
 #if defined(OS_WIN)
 const wchar_t kBaseFileName[] = L"some_file_name";
 #else
 const char kBaseFileName[] = "some_file_name";
 #endif
+#endif  // BUILDFLAG(ENABLE_WEBRTC)
 
 url::Origin SecurityOrigin() {
   return url::Origin(GURL(kSecurityOrigin));