Fix chrome target in Windows GN build.

third_party/mojo_services/src/view_manager/public/cpp/lib/view.cc

Index: third_party/mojo_services/src/view_manager/public/cpp/lib/view.cc
diff --git a/third_party/mojo_services/src/view_manager/public/cpp/lib/view.cc b/third_party/mojo_services/src/view_manager/public/cpp/lib/view.cc
index f7e77844ce9cfbd191051b8594da239aa3b71cce..d347292de47b3c8e29c6c1b7b612143760863e7f 100644
--- a/third_party/mojo_services/src/view_manager/public/cpp/lib/view.cc
+++ b/third_party/mojo_services/src/view_manager/public/cpp/lib/view.cc
@@ -387,7 +387,7 @@ namespace {
 ViewportMetricsPtr CreateEmptyViewportMetrics() {
   ViewportMetricsPtr metrics = ViewportMetrics::New();
   metrics->size = Size::New();
-  return metrics;
+  return metrics.Pass();

[Slava Chigrin, 2015/01/30 16:29:31]

Causes build errors due to private copy constructor. Seems, it is excluded from
GYP build on Windows, thats why this was not noticed.

[brettw, 2015/01/30 19:31:23]

Yeah, Mojo on Windows is "interesting".

 }
 }