Add AudioStreamRegistry. Move stream counting logic

content/browser/renderer_host/media/audio_renderer_host_unittest.cc

Index: content/browser/renderer_host/media/audio_renderer_host_unittest.cc
diff --git a/content/browser/renderer_host/media/audio_renderer_host_unittest.cc b/content/browser/renderer_host/media/audio_renderer_host_unittest.cc
index 88dc9d37dd9ac1334d7cd4d5990af6c2fab6b674..9c4fa672f5c60ab8799affacb1c023270846b68c 100644
--- a/content/browser/renderer_host/media/audio_renderer_host_unittest.cc
+++ b/content/browser/renderer_host/media/audio_renderer_host_unittest.cc
@@ -16,6 +16,7 @@
 #include "content/browser/media/capture/audio_mirroring_manager.h"
 #include "content/browser/media/media_internals.h"
 #include "content/browser/renderer_host/media/audio_input_device_manager.h"
+#include "content/browser/renderer_host/media/audio_stream_registry_impl.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/common/media/audio_messages.h"
 #include "content/public/browser/media_device_id.h"
@@ -125,11 +126,13 @@ class MockAudioRendererHost : public AudioRendererHost {
  public:
   MockAudioRendererHost(base::RunLoop* auth_run_loop,
                         int render_process_id,
+                        AudioStreamRegistry* stream_registry,
                         media::AudioManager* audio_manager,
                         AudioMirroringManager* mirroring_manager,
                         MediaStreamManager* media_stream_manager,
                         const std::string& salt)
       : AudioRendererHost(render_process_id,
+                          stream_registry,
                           audio_manager,
                           mirroring_manager,
                           media_stream_manager,
@@ -233,13 +236,15 @@ class AudioRendererHostTest : public testing::Test {
         audio_manager_(base::MakeUnique<FakeAudioManagerWithAssociations>(
             base::ThreadTaskRunnerHandle::Get(),
             log_factory.get())),
-        render_process_host_(&browser_context_, &auth_run_loop_) {
+        render_process_host_(&browser_context_, &auth_run_loop_),
+        stream_registry_(render_process_host_.GetID()) {
     base::CommandLine::ForCurrentProcess()->AppendSwitch(
         switches::kUseFakeDeviceForMediaStream);
     media_stream_manager_.reset(new MediaStreamManager(audio_manager_.get()));
     host_ = new MockAudioRendererHost(
-        &auth_run_loop_, render_process_host_.GetID(), audio_manager_.get(),
-        &mirroring_manager_, media_stream_manager_.get(), kSalt);
+        &auth_run_loop_, render_process_host_.GetID(), &stream_registry_,
+        audio_manager_.get(), &mirroring_manager_, media_stream_manager_.get(),
+        kSalt);
 
     // Simulate IPC channel connected.
     host_->set_peer_process_for_testing(base::Process::Current());
@@ -512,6 +517,7 @@ class AudioRendererHostTest : public testing::Test {
   MockAudioMirroringManager mirroring_manager_;
   base::RunLoop auth_run_loop_;
   MockRenderProcessHostWithSignaling render_process_host_;
+  AudioStreamRegistryImpl stream_registry_;
   scoped_refptr<MockAudioRendererHost> host_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererHostTest);