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

content/browser/gpu/gpu_process_host_ui_shim.cc

Index: content/browser/gpu/gpu_process_host_ui_shim.cc
diff --git a/content/browser/gpu/gpu_process_host_ui_shim.cc b/content/browser/gpu/gpu_process_host_ui_shim.cc
index 4b84d6da762a7437d78f3e4d3f6d940b3daffa23..083c99d457ab4158f20897692dd240c3e026ec1c 100644
--- a/content/browser/gpu/gpu_process_host_ui_shim.cc
+++ b/content/browser/gpu/gpu_process_host_ui_shim.cc
@@ -26,7 +26,6 @@
 #include "content/public/browser/browser_thread.h"
 
 #if defined(OS_MACOSX)
-#include "content/browser/browser_io_surface_manager_mac.h"
 #include "ui/accelerated_widget_mac/accelerated_widget_mac.h"
 #endif
 
@@ -246,24 +245,12 @@ void GpuProcessHostUIShim::OnAcceleratedSurfaceBuffersSwapped(
         content::GpuSurfaceTracker::Get()->AcquireNativeWidget(
             params.surface_id);
     base::ScopedCFTypeRef<IOSurfaceRef> io_surface;
-    CAContextID ca_context_id = 0;
-
-    switch (ui::GetSurfaceHandleType(params.surface_handle)) {
-      case ui::kSurfaceHandleTypeIOSurface: {
-        IOSurfaceID io_surface_id =
-            ui::IOSurfaceIDFromSurfaceHandle(params.surface_handle);
-        io_surface.reset(
-            BrowserIOSurfaceManager::GetInstance()->AcquireIOSurface(
-                gfx::GenericSharedMemoryId(io_surface_id)));
-        break;
-      }
-      case ui::kSurfaceHandleTypeCAContext: {
-        ca_context_id = ui::CAContextIDFromSurfaceHandle(params.surface_handle);
-        break;
-      }
-      default:
-        DLOG(ERROR) << "Unrecognized accelerated frame type.";
-        return;
+    CAContextID ca_context_id = params.ca_context_id;
+
+    DCHECK((params.ca_context_id == 0) ^
+           (params.io_surface.get() == MACH_PORT_NULL));
+    if (params.io_surface.get()) {
+      io_surface.reset(IOSurfaceLookupFromMachPort(params.io_surface));
     }
 
     ui::AcceleratedWidgetMacGotFrame(native_widget, ca_context_id, io_surface,