Replace IOSurfaceManager by directly passing IOSurface Mach ports over Chrome IPC.

content/child/child_thread_impl.cc

Index: content/child/child_thread_impl.cc
diff --git a/content/child/child_thread_impl.cc b/content/child/child_thread_impl.cc
index 3acec6173349f6bc46a08b67d1f99b527d460125..75482e9c53119e02ec7be6e5d750ae8fc928ab2f 100644
--- a/content/child/child_thread_impl.cc
+++ b/content/child/child_thread_impl.cc
@@ -69,10 +69,6 @@
 #include "third_party/tcmalloc/chromium/src/gperftools/heap-profiler.h"
 #endif
 
-#if defined(OS_MACOSX)
-#include "content/child/child_io_surface_manager_mac.h"
-#endif
-
 #if defined(USE_OZONE)
 #include "ui/ozone/public/client_native_pixmap_factory.h"
 #endif
@@ -178,29 +174,6 @@ class SuicideOnChannelErrorFilter : public IPC::MessageFilter {
 
 #endif  // OS(POSIX)
 
-#if defined(OS_MACOSX)
-class IOSurfaceManagerFilter : public IPC::MessageFilter {
- public:
-  // Overridden from IPC::MessageFilter:
-  bool OnMessageReceived(const IPC::Message& message) override {
-    bool handled = true;
-    IPC_BEGIN_MESSAGE_MAP(IOSurfaceManagerFilter, message)
-      IPC_MESSAGE_HANDLER(ChildProcessMsg_SetIOSurfaceManagerToken,
-                          OnSetIOSurfaceManagerToken)
-      IPC_MESSAGE_UNHANDLED(handled = false)
-    IPC_END_MESSAGE_MAP()
-    return handled;
-  }
-
- protected:
-  ~IOSurfaceManagerFilter() override {}
-
-  void OnSetIOSurfaceManagerToken(const IOSurfaceManagerToken& token) {
-    ChildIOSurfaceManager::GetInstance()->set_token(token);
-  }
-};
-#endif
-
 #if defined(USE_OZONE)
 class ClientNativePixmapFactoryFilter : public IPC::MessageFilter {
  public:
@@ -480,10 +453,6 @@ void ChildThreadImpl::Init(const Options& options) {
     channel_->AddFilter(new SuicideOnChannelErrorFilter());
 #endif
 
-#if defined(OS_MACOSX)
-  channel_->AddFilter(new IOSurfaceManagerFilter());
-#endif
-
 #if defined(USE_OZONE)
   channel_->AddFilter(new ClientNativePixmapFactoryFilter());
 #endif