Make channel preemption not require view contexts for hookup

content/common/gpu/image_transport_surface.cc

Index: content/common/gpu/image_transport_surface.cc
diff --git a/content/common/gpu/image_transport_surface.cc b/content/common/gpu/image_transport_surface.cc
index a175fc96a641f75ab6eb6e56e4556081070ff813..26cbae946afa9881609daf8fef923f03b8c450f2 100644
--- a/content/common/gpu/image_transport_surface.cc
+++ b/content/common/gpu/image_transport_surface.cc
@@ -12,7 +12,6 @@
 #include "content/common/gpu/gpu_channel_manager.h"
 #include "content/common/gpu/gpu_command_buffer_stub.h"
 #include "content/common/gpu/gpu_messages.h"
-#include "content/public/common/content_switches.h"
 #include "gpu/command_buffer/service/sync_point_manager.h"
 #include "ui/gfx/vsync_provider.h"
 #include "ui/gl/gl_context.h"
@@ -31,15 +30,6 @@ scoped_refptr<gfx::GLSurface> ImageTransportSurface::CreateSurface(
     const gfx::GLSurfaceHandle& handle) {
   scoped_refptr<gfx::GLSurface> surface;
   if (handle.transport_type == gfx::NULL_TRANSPORT) {
-    GpuChannel* parent_channel = manager->LookupChannel(
-        handle.parent_client_id);
-    if (parent_channel) {
-      const base::CommandLine* command_line =
-          base::CommandLine::ForCurrentProcess();
-      if (command_line->HasSwitch(switches::kUIPrioritizeInGpuProcess))
-        stub->channel()->SetPreemptByFlag(parent_channel->GetPreemptionFlag());
-    }
-
     surface = manager->GetDefaultOffscreenSurface();
   } else {
     surface = CreateNativeSurface(manager, stub, handle);