Refactors DockedWindowLayoutManager in terms of ash/wm/common

ash/system/web_notification/ash_popup_alignment_delegate.cc

Index: ash/system/web_notification/ash_popup_alignment_delegate.cc
diff --git a/ash/system/web_notification/ash_popup_alignment_delegate.cc b/ash/system/web_notification/ash_popup_alignment_delegate.cc
index a49a78c6e2d800f25c1542f8184b5203271ac856..71612f2b5d2427791c68a77dfd90c3a27be9b433 100644
--- a/ash/system/web_notification/ash_popup_alignment_delegate.cc
+++ b/ash/system/web_notification/ash_popup_alignment_delegate.cc
@@ -98,7 +98,7 @@ bool AshPopupAlignmentDelegate::IsTopDown() const {
 }
 
 bool AshPopupAlignmentDelegate::IsFromLeft() const {
-  return GetAlignment() == SHELF_ALIGNMENT_LEFT;
+  return GetAlignment() == wm::SHELF_ALIGNMENT_LEFT;
 }
 
 void AshPopupAlignmentDelegate::RecomputeAlignment(
@@ -106,7 +106,7 @@ void AshPopupAlignmentDelegate::RecomputeAlignment(
   // Nothing needs to be done.
 }
 
-ShelfAlignment AshPopupAlignmentDelegate::GetAlignment() const {
+wm::ShelfAlignment AshPopupAlignmentDelegate::GetAlignment() const {
   return shelf_->GetAlignment();
 }