Create a private API for controlling WebRTC's AEC3

content/renderer/media/aec_dump_message_filter.h

Index: content/renderer/media/aec_dump_message_filter.h
diff --git a/content/renderer/media/aec_dump_message_filter.h b/content/renderer/media/aec_dump_message_filter.h
index 9cfaf4f1af5887254255a8e255744cbdbfa8ecbd..6e765bbaeac4f79bc0ca4d2e95dd4ff00e734ac9 100644
--- a/content/renderer/media/aec_dump_message_filter.h
+++ b/content/renderer/media/aec_dump_message_filter.h
@@ -21,6 +21,7 @@ namespace content {
 
 // MessageFilter that handles AEC dump messages and forwards them to an
 // observer.
+// TODO(hlundin) Rename class to reflect expanded use; http://crbug.com/709919.

[Henrik Grunell, 2017/04/10 12:33:47]

Nit: Here too.

[hlundin-chromium, 2017/04/10 13:03:17]

Done.

 class CONTENT_EXPORT AecDumpMessageFilter : public IPC::MessageFilter {
  public:
   class AecDumpDelegate {
@@ -28,6 +29,7 @@ class CONTENT_EXPORT AecDumpMessageFilter : public IPC::MessageFilter {
     virtual void OnAecDumpFile(
         const IPC::PlatformFileForTransit& file_handle) = 0;
     virtual void OnDisableAecDump() = 0;
+    virtual void OnAec3Enable(bool enable) = 0;
     virtual void OnIpcClosing() = 0;
   };
 
@@ -73,12 +75,14 @@ class CONTENT_EXPORT AecDumpMessageFilter : public IPC::MessageFilter {
   // Accessed on |io_task_runner_|.
   void OnEnableAecDump(int id, IPC::PlatformFileForTransit file_handle);
   void OnDisableAecDump();
+  void OnEnableAec3(int id, bool enable);
 
   // Accessed on |main_task_runner_|.
   void DoEnableAecDump(int id, IPC::PlatformFileForTransit file_handle);
   void DoDisableAecDump();
   void DoChannelClosingOnDelegates();
   int GetIdForDelegate(AecDumpMessageFilter::AecDumpDelegate* delegate);
+  void DoEnableAec3(int id, bool enable);
 
   // Accessed on |io_task_runner_|.
   IPC::Sender* sender_;