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

content/app/content_main_runner.cc

Index: content/app/content_main_runner.cc
diff --git a/content/app/content_main_runner.cc b/content/app/content_main_runner.cc
index a686b029de1a41453fa96fb2fbb3f3ff5c1a3def..3b5f88ad7b58b76de4d0aed66959c37b6a70758f 100644
--- a/content/app/content_main_runner.cc
+++ b/content/app/content_main_runner.cc
@@ -90,9 +90,7 @@
 #if !defined(OS_IOS)
 #include "base/power_monitor/power_monitor_device_source.h"
 #include "content/app/mac/mac_init.h"
-#include "content/browser/browser_io_surface_manager_mac.h"
 #include "content/browser/mach_broker_mac.h"
-#include "content/child/child_io_surface_manager_mac.h"
 #include "content/common/sandbox_init_mac.h"
 #endif  // !OS_IOS
 #endif  // OS_WIN
@@ -652,19 +650,6 @@ class ContentMainRunnerImpl : public ContentMainRunner {
         (!delegate_ || delegate_->ShouldSendMachPort(process_type))) {
       MachBroker::ChildSendTaskPortToParent();
     }
-
-    if (!command_line.HasSwitch(switches::kSingleProcess) &&
-        !process_type.empty() && (process_type == switches::kRendererProcess ||
-                                  process_type == switches::kGpuProcess)) {
-      base::mac::ScopedMachSendRight service_port =
-          BrowserIOSurfaceManager::LookupServicePort(getppid());
-      if (service_port.is_valid()) {
-        ChildIOSurfaceManager::GetInstance()->set_service_port(
-            service_port.release());
-        gfx::IOSurfaceManager::SetInstance(
-            ChildIOSurfaceManager::GetInstance());
-      }
-    }
 #elif defined(OS_WIN)
     base::win::SetupCRT(command_line);
 #endif