Don't set the window name if params.name is empty

Bug: None
Test: Print window tree and the browser's window shows its name "BrowserFrameAsh"
Change-Id: I3520f7a735441c9c8d6b2cf56ae91d03eafa5db4
Reviewed-on: https://chromium-review.googlesource.com/c/1334588Reviewed-by: Michael Wasserman <msw@chromium.org>
Commit-Queue: Mitsuru Oshima <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608036}

ui/views/widget/native_widget_aura.cc

@@ -175,7 +175,8 @@ void NativeWidgetAura::InitNativeWidget(const Widget::InitParams& params) {
 
   window_->Init(params.layer_type);
   // Set name after layer init so it propagates to layer.
-  window_->SetName(params.name);
+  if (!params.name.empty())
+    window_->SetName(params.name);
   if (params.type == Widget::InitParams::TYPE_CONTROL)
     window_->Show();