Update bool WindowManager::OnWmSetBounds() to match with its desirable behavior.

services/ui/public/cpp/window_tree_client.cc

Index: services/ui/public/cpp/window_tree_client.cc
diff --git a/services/ui/public/cpp/window_tree_client.cc b/services/ui/public/cpp/window_tree_client.cc
index 868e17f7d08b1fb7ecf10d474b53ca8290afa709..edb51ce6c1d6d0f2ac05e7858310c528ea1834a6 100644
--- a/services/ui/public/cpp/window_tree_client.cc
+++ b/services/ui/public/cpp/window_tree_client.cc
@@ -42,11 +42,6 @@ Id MakeTransportId(ClientSpecificId client_id, ClientSpecificId local_id) {
 // Helper function to get the device_scale_factor() of the display::Display
 // with |display_id|.
 float ScaleFactorForDisplay(int64_t display_id) {
-  // TODO(jonross): Remove this once aura-mus is complete. Currently the screen
-  // is not being set properly for mus-in-renderer. (http://crbug.com/659155)
-  if (!display::Screen::GetScreen())
-    return 1.f;
-
   // TODO(riajiang): Change to use display::GetDisplayWithDisplayId() after
   // https://codereview.chromium.org/2361283002/ is landed.
   std::vector<display::Display> displays =
@@ -1321,14 +1316,8 @@ void WindowTreeClient::WmSetBounds(uint32_t change_id,
     DCHECK(window_manager_delegate_);
     gfx::Rect transit_bounds_in_dip = gfx::ConvertRectToDIP(
         ScaleFactorForDisplay(window->display_id()), transit_bounds);
-    gfx::Rect bounds = transit_bounds_in_dip;
-    result = window_manager_delegate_->OnWmSetBounds(window, &bounds);
-    if (result) {
-      // If the resulting bounds differ return false. Returning false ensures
-      // the client applies the bounds we set below.
-      result = bounds == transit_bounds_in_dip;
-      window->SetBounds(bounds);
-    }
+    window_manager_delegate_->OnWmSetBounds(window, &transit_bounds_in_dip);

[Fady Samuel, 2016/12/02 23:18:25]

Add window->SetBounds(transit_bounds_in_dip)?

[thanhph, 2016/12/05 17:54:00]

Done.

+    result = true;
   }
   if (window_manager_internal_client_)
     window_manager_internal_client_->WmResponse(change_id, result);