Enable display rotation, magnifier in unified desktop mode

ash/host/transformer_helper.cc

Index: ash/host/transformer_helper.cc
diff --git a/ash/host/transformer_helper.cc b/ash/host/transformer_helper.cc
index 8075fc394e5505ff98c514308b49452db77dcaf3..435b74e750d6e3825e675e1093bd6b6c447bb4a6 100644
--- a/ash/host/transformer_helper.cc
+++ b/ash/host/transformer_helper.cc
@@ -58,11 +58,17 @@ class SimpleRootWindowTransformer : public RootWindowTransformer {
 
 TransformerHelper::TransformerHelper(AshWindowTreeHost* ash_host)
     : ash_host_(ash_host) {
-  SetTransform(gfx::Transform());
+#if defined(OS_WIN)
+  Init();

[oshima, 2015/05/01 20:58:16]

here

[Jun Mukai, 2015/05/01 22:06:07]

I'm not sure what's this is for.
_ozone, _x11, and _unified invoke Init() on its constructor, and the helper is
constructed inside of the class.  The last implementation is _win, and for
windows it invokes Init() here.
Why you create Init, and why it's not always invoked here?

[oshima, 2015/05/01 22:44:57]

As I mentioned, I'm still investigating but windows seems to have slightly
different call path.

+#endif
 }
 
 TransformerHelper::~TransformerHelper() {}
 
+void TransformerHelper::Init() {
+  SetTransform(gfx::Transform());
+}
+
 gfx::Insets TransformerHelper::GetHostInsets() const {
   return transformer_->GetHostInsets();
 }