NoTransportImageTransportFactory is compiled into only test targets.

content/browser/renderer_host/render_widget_host_view_aura_unittest.cc

Index: content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc b/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
index a11b4e6f3a6bb31e097f85b4585ff285f0920265..61794bcef135f6e1797a2b155ff03b46fd8bc295 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
@@ -14,6 +14,7 @@
 #include "cc/output/compositor_frame_metadata.h"
 #include "cc/output/copy_output_request.h"
 #include "content/browser/browser_thread_impl.h"
+#include "content/browser/compositor/no_transport_image_transport_factory.h"
 #include "content/browser/compositor/resize_lock.h"
 #include "content/browser/renderer_host/overscroll_controller.h"
 #include "content/browser/renderer_host/overscroll_controller_delegate.h"
@@ -48,7 +49,6 @@
 #include "ui/base/ui_base_types.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/test/draw_waiter_for_test.h"
-#include "ui/compositor/test/in_process_context_factory.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/gestures/gesture_configuration.h"
@@ -312,11 +312,11 @@ class RenderWidgetHostViewAuraTest : public testing::Test {
       : browser_thread_for_ui_(BrowserThread::UI, &message_loop_) {}
 
   void SetUpEnvironment() {
-    ui::ContextFactory* context_factory = new ui::InProcessContextFactory;
     ImageTransportFactory::InitializeForUnitTests(
-        scoped_ptr<ui::ContextFactory>(context_factory));
+        new NoTransportImageTransportFactory);
     aura_test_helper_.reset(new aura::test::AuraTestHelper(&message_loop_));
-    aura_test_helper_->SetUp(context_factory);
+    aura_test_helper_->SetUp(
+        ImageTransportFactory::GetInstance()->GetContextFactory());
     new wm::DefaultActivationClient(aura_test_helper_->root_window());
 
     browser_context_.reset(new TestBrowserContext);