Move Show and Hide impls from PlatformWindowMus to NativeWidgetMus

ui/views/mus/platform_window_mus.cc

Index: ui/views/mus/platform_window_mus.cc
diff --git a/ui/views/mus/platform_window_mus.cc b/ui/views/mus/platform_window_mus.cc
index ca52025706cba591c00971f92c16129216315c5e..f1b075ccbf5a6debc430b8ba8c60d687985d8b91 100644
--- a/ui/views/mus/platform_window_mus.cc
+++ b/ui/views/mus/platform_window_mus.cc
@@ -105,10 +105,6 @@ PlatformWindowMus::~PlatformWindowMus() {
     mus_window_->Destroy();
 }
 
-void PlatformWindowMus::Activate() {
-  mus_window_->SetFocus();
-}
-
 void PlatformWindowMus::SetCursorById(mus::mojom::Cursor cursor) {
   if (last_cursor_ != cursor) {
     // The ui::PlatformWindow interface uses ui::PlatformCursor at this level,
@@ -121,11 +117,11 @@ void PlatformWindowMus::SetCursorById(mus::mojom::Cursor cursor) {
 }
 
 void PlatformWindowMus::Show() {
-  mus_window_->SetVisible(true);
+  NOTIMPLEMENTED();
 }
 
 void PlatformWindowMus::Hide() {
-  mus_window_->SetVisible(false);
+  NOTIMPLEMENTED();
 }
 
 void PlatformWindowMus::Close() {
@@ -133,7 +129,7 @@ void PlatformWindowMus::Close() {
 }
 
 void PlatformWindowMus::SetBounds(const gfx::Rect& bounds) {
-  mus_window_->SetBounds(bounds);
+  NOTIMPLEMENTED();

[sadrul, 2016/05/09 16:38:26]

Add a class-level comment that PlatformWindowMus is going to be removed, and
remove the NOTIMPLEMENTED()s from here.

[Mark Dittmer, 2016/05/09 19:04:44]

Addressed in https://codereview.chromium.org/1953293004/ and here.

 }
 
 gfx::Rect PlatformWindowMus::GetBounds() {