Allow out-of-process iframes to render to compositing surfaces.

content/browser/frame_host/render_frame_host_manager_unittest.cc

Index: content/browser/frame_host/render_frame_host_manager_unittest.cc
diff --git a/content/browser/frame_host/render_frame_host_manager_unittest.cc b/content/browser/frame_host/render_frame_host_manager_unittest.cc
index cf1545a5a2d00cce455eb538d7369b02f3480e9a..d3da015a08e89e89b7b8955e74aa3a44a2fce264 100644
--- a/content/browser/frame_host/render_frame_host_manager_unittest.cc
+++ b/content/browser/frame_host/render_frame_host_manager_unittest.cc
@@ -7,6 +7,7 @@
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/histogram_tester.h"
 #include "base/time/time.h"
+#include "content/browser/compositor/test/no_transport_image_transport_factory.h"
 #include "content/browser/frame_host/cross_site_transferring_request.h"
 #include "content/browser/frame_host/navigation_controller_impl.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
@@ -270,6 +271,11 @@ class RenderFrameHostManagerTest : public RenderViewHostImplTestHarness {
   void SetUp() override {
     RenderViewHostImplTestHarness::SetUp();
     WebUIControllerFactory::RegisterFactory(&factory_);
+#if !defined(OS_ANDROID)
+    ImageTransportFactory::InitializeForUnitTests(
+        scoped_ptr<ImageTransportFactory>(
+            new NoTransportImageTransportFactory));
+#endif
   }
 
   void TearDown() override {