NoTransportImageTransportFactory is compiled into only test targets.

content/browser/compositor/image_transport_factory.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/compositor/image_transport_factory.h"
 
 #include "base/command_line.h"
 #include "content/browser/compositor/gpu_process_transport_factory.h"
-#include "content/browser/compositor/no_transport_image_transport_factory.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/compositor_switches.h"
 #include "ui/gl/gl_implementation.h"
 
 namespace content {
 
 namespace {
 ImageTransportFactory* g_factory = NULL;
 bool g_initialized_for_unit_tests = false;
 static gfx::DisableNullDrawGLBindings* g_disable_null_draw = NULL;
 
 void SetFactory(ImageTransportFactory* factory) {
   g_factory = factory;
 }
 
 }
 
 // static
 void ImageTransportFactory::Initialize() {
   DCHECK(!g_factory || g_initialized_for_unit_tests);
   if (g_initialized_for_unit_tests)
     return;
   SetFactory(new GpuProcessTransportFactory);
 }
 
 void ImageTransportFactory::InitializeForUnitTests(
-    scoped_ptr<ui::ContextFactory> test_factory) {
+    scoped_ptr<ImageTransportFactory> factory) {
   DCHECK(!g_factory);
   DCHECK(!g_initialized_for_unit_tests);
   g_initialized_for_unit_tests = true;
 
   CommandLine* command_line = CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kEnablePixelOutputInTests))
     g_disable_null_draw = new gfx::DisableNullDrawGLBindings;
 
-  SetFactory(new NoTransportImageTransportFactory(test_factory.Pass()));
+  SetFactory(factory.release());
 }
 
 // static
 void ImageTransportFactory::Terminate() {
   delete g_factory;
   g_factory = NULL;
   delete g_disable_null_draw;
   g_disable_null_draw = NULL;
   g_initialized_for_unit_tests = false;
 }
 
 // static
 ImageTransportFactory* ImageTransportFactory::GetInstance() {
   return g_factory;
 }
 
 }  // namespace content