Fix Ash status area bubble borders

ash/system/tray/system_tray_bubble.cc

Index: ash/system/tray/system_tray_bubble.cc
diff --git a/ash/system/tray/system_tray_bubble.cc b/ash/system/tray/system_tray_bubble.cc
index ef3c293678058d316c467b21b5bf1a6a8b5dd85f..49fe1d5ff54c775cbf21395068785e8d610615ff 100644
--- a/ash/system/tray/system_tray_bubble.cc
+++ b/ash/system/tray/system_tray_bubble.cc
@@ -30,9 +30,14 @@ namespace {
 // detailed view.
 const int kDetailedBubbleMaxHeight = kTrayPopupItemHeight * 5;
 
+// TODO(stevenjb/jennyz): Remove this when TrayBubbleBorder is integrated with
+// BubbleBorder. See crbug.com/132772, crbug.com/139813.
 class TrayPopupItemBorder : public views::Border {
  public:
-  explicit TrayPopupItemBorder(views::View* owner) : owner_(owner) {}
+  explicit TrayPopupItemBorder(views::View* owner, ShelfAlignment alignment)
+      : owner_(owner),
+        alignment_(alignment) {
+  }
   virtual ~TrayPopupItemBorder() {}
 
  private:
@@ -47,24 +52,36 @@ class TrayPopupItemBorder : public views::Border {
       canvas->FillRect(gfx::Rect(0, 0, view.width(), 1), kBorderDarkColor);
 
     // Bottom border.
-    if (index != parent->child_count() - 1) {
+    if ((index != parent->child_count() - 1) ||
+        (alignment_ != SHELF_ALIGNMENT_BOTTOM)) {
       canvas->FillRect(gfx::Rect(0, view.height() - 1, view.width(), 1),
                        kBorderLightColor);
     }
 
     // Left and right borders.
-    canvas->FillRect(gfx::Rect(0, 0, 1, view.height()), kBorderDarkColor);
-    canvas->FillRect(gfx::Rect(view.width() - 1, 0, 1, view.height()),
-        kBorderDarkColor);
+    if (alignment_ != SHELF_ALIGNMENT_LEFT) {
+      canvas->FillRect(gfx::Rect(0, 0, 1, view.height()),
+                       kBorderDarkColor);
+    }
+    if (alignment_ != SHELF_ALIGNMENT_RIGHT) {
+      canvas->FillRect(gfx::Rect(view.width() - 1, 0, 1, view.height()),
+                       kBorderDarkColor);
+    }
   }
 
   virtual void GetInsets(gfx::Insets* insets) const OVERRIDE {
     const views::View* parent = owner_->parent();
     int index = parent->GetIndexOf(owner_);
-    insets->Set(index == 0, 1, index != parent->child_count() - 1, 1);
+    int left = (alignment_ == SHELF_ALIGNMENT_LEFT) ? 0 : 1;
+    int right = (alignment_ == SHELF_ALIGNMENT_RIGHT) ? 0 : 1;
+    insets->Set(index == 0 ? 1 : 0,
+                left,
+                (index != parent->child_count() - 1) ? 1 : 0,
+                right);
   }
 
   views::View* owner_;
+  ShelfAlignment alignment_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayPopupItemBorder);
 };
@@ -73,11 +90,13 @@ class TrayPopupItemBorder : public views::Border {
 // - optionally changes background color on hover.
 class TrayPopupItemContainer : public views::View {
  public:
-  TrayPopupItemContainer(views::View* view, bool change_background)
+  TrayPopupItemContainer(views::View* view,
+                         ShelfAlignment alignment,
+                         bool change_background)
       : hover_(false),
         change_background_(change_background) {
     set_notify_enter_exit_on_child(true);
-    set_border(new TrayPopupItemBorder(this));
+    set_border(new TrayPopupItemBorder(this, alignment));
     views::BoxLayout* layout = new views::BoxLayout(
         views::BoxLayout::kVertical, 0, 0, 0);
     layout->set_spread_blank_space(true);
@@ -385,7 +404,7 @@ void SystemTrayBubble::CreateItemViews(user::LoginStatus login_status) {
     }
     if (view) {
       bubble_view_->AddChildView(new TrayPopupItemContainer(
-          view, bubble_type_ == BUBBLE_TYPE_DEFAULT));
+          view, tray_->shelf_alignment(), bubble_type_ == BUBBLE_TYPE_DEFAULT));
     }
   }
 }