Try to fix layout of scroll views in TrayDetailsViews.

ash/common/system/tray/fixed_sized_scroll_view.cc

Index: ash/common/system/tray/fixed_sized_scroll_view.cc
diff --git a/ash/common/system/tray/fixed_sized_scroll_view.cc b/ash/common/system/tray/fixed_sized_scroll_view.cc
index 4bc89220354cb76bb65108bd524b0fc8f2d64306..52bf75ac0c8af6541a6261c486bf79650b258987 100644
--- a/ash/common/system/tray/fixed_sized_scroll_view.cc
+++ b/ash/common/system/tray/fixed_sized_scroll_view.cc
@@ -28,7 +28,8 @@ FixedSizedScrollView::~FixedSizedScrollView() {}
 
 void FixedSizedScrollView::SetContentsView(views::View* view) {
   SetContents(view);
-  view->SetBoundsRect(gfx::Rect(view->GetPreferredSize()));
+  if (!UseMd())
+    view->SetBoundsRect(gfx::Rect(view->GetPreferredSize()));
 }
 
 void FixedSizedScrollView::SetFixedSize(const gfx::Size& size) {
@@ -45,6 +46,9 @@ void FixedSizedScrollView::set_fixed_size(const gfx::Size& size) {
 }
 
 gfx::Size FixedSizedScrollView::GetPreferredSize() const {
+  if (UseMd())
+    return views::View::GetPreferredSize();
+
   gfx::Size size =
       fixed_size_.IsEmpty() ? contents()->GetPreferredSize() : fixed_size_;
   gfx::Insets insets = GetInsets();
@@ -53,10 +57,8 @@ gfx::Size FixedSizedScrollView::GetPreferredSize() const {
 }
 
 void FixedSizedScrollView::Layout() {
-  if (UseMd()) {
-    views::ScrollView::Layout();
-    return;
-  }
+  if (UseMd())
+    return views::ScrollView::Layout();
 
   gfx::Rect bounds = gfx::Rect(contents()->GetPreferredSize());
   bounds.set_width(std::max(0, width() - GetScrollBarWidth()));