Initialize AVFoundation explicitly

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index 50d0d8260023e27e578585f37344b5151a9b4a86..dbd2732e1572b1f6fdea33f47fa674ea942fa3ab 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -90,6 +90,10 @@
 #include "ui/gl/gl_surface.h"
 #endif
 
+#if defined(OS_MACOSX)
+#include "media/base/mac/avfoundation_glue.h"
+#endif
+
 #if defined(OS_MACOSX) && !defined(OS_IOS)
 #include "base/memory/memory_pressure_monitor_mac.h"
 #include "content/browser/bootstrap_sandbox_mac.h"
@@ -647,6 +651,11 @@ int BrowserMainLoop::PreCreateThreads() {
   }
 #endif
 
+#if defined(OS_MACOSX)
+  // Initialize AVFoundation if supported, for audio and video.
+  AVFoundationGlue::InitializeAVFoundation();

[jam, 2015/05/27 14:54:37]

btw do you have timings on how long this takes to do?

[tommi (sloooow) - chröme, 2015/05/27 15:54:53]

Added perf trace. I'm building right now on my laptop (might take a while), will
run tests and report back.

+#endif
+
   // Need to initialize in-process GpuDataManager before creating threads.
   // It's unsafe to append the gpu command line switches to the global
   // CommandLine::ForCurrentProcess object after threads are created.