Revert "Chromium changes to statically link ffmpeg."

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 7ad666e691fad4a380efc4222afa5ffc16df49ba..d64ad7729c0d1d8a69d78d54a9a5c71b6067e6c7 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -647,7 +647,10 @@ void RenderThreadImpl::Init() {
 
   // Note that under Linux, the media library will normally already have
   // been initialized by the Zygote before this instance became a Renderer.
-  media::InitializeMediaLibrary();
+  base::FilePath media_path;
+  PathService::Get(DIR_MEDIA_LIBS, &media_path);
+  if (!media_path.empty())
+    media::InitializeMediaLibrary(media_path);
 
   memory_pressure_listener_.reset(new base::MemoryPressureListener(
       base::Bind(&RenderThreadImpl::OnMemoryPressure, base::Unretained(this))));
@@ -1104,6 +1107,10 @@ void RenderThreadImpl::EnsureWebKitInitialized() {
   EnableBlinkPlatformLogChannels(
       command_line.GetSwitchValueASCII(switches::kBlinkPlatformLogChannels));
 
+  if (!media::IsMediaLibraryInitialized()) {
+    WebRuntimeFeatures::enableWebAudio(false);
+  }
+
   RenderMediaClient::Initialize();
 
   FOR_EACH_OBSERVER(RenderProcessObserver, observers_, WebKitInitialized());