Add ImeMenuTray element.

ash/shelf/shelf.cc

Index: ash/shelf/shelf.cc
diff --git a/ash/shelf/shelf.cc b/ash/shelf/shelf.cc
index 358badd6739f5d43e4b8d9321b7ae54e85d3975d..89b333c5435a095b78f459eefc6317bcc7176dab 100644
--- a/ash/shelf/shelf.cc
+++ b/ash/shelf/shelf.cc
@@ -36,6 +36,10 @@
 #include "ui/views/widget/widget_delegate.h"
 #include "ui/wm/public/activation_client.h"
 
+#if defined(OS_CHROMEOS)
+#include "ash/common/system/chromeos/ime_menu/ime_menu_tray.h"
+#endif  // defined(OS_CHROMEOS)
+
 namespace ash {
 
 const char Shelf::kNativeViewName[] = "ShelfView";
@@ -115,12 +119,24 @@ ShelfVisibilityState Shelf::GetVisibilityState() const {
 gfx::Rect Shelf::GetScreenBoundsOfItemIconForWindow(
     const aura::Window* window) {
   ShelfID id = GetShelfIDForWindow(window);
-  gfx::Rect bounds(shelf_view_->GetIdealBoundsOfItemIcon(id));
-  gfx::Point screen_origin;
-  views::View::ConvertPointToScreen(shelf_view_, &screen_origin);
-  return gfx::Rect(screen_origin.x() + bounds.x(),
-                   screen_origin.y() + bounds.y(), bounds.width(),
-                   bounds.height());
+  gfx::Rect bounds;
+  gfx::Vector2d offset;
+#if defined(OS_CHROMEOS)
+  if (window->GetProperty(kShelfItemOnTrayForImeMenu)) {
+    // For opt-in IME menu, the item icon lays on the status tray.
+    bounds = shelf_widget_->status_area_widget()->ime_menu_tray()->bounds();
+    gfx::Rect status_area_bounds =
+        shelf_widget_->status_area_widget()->GetWindowBoundsInScreen();
+    offset = status_area_bounds.OffsetFromOrigin();
+  }

[James Cook, 2016/06/30 21:15:47]

nit: This might be easier to read with an early return for this case. You could
keep the original code for the non-ime-menu case. I think
kShelfItemOnTrayForImeMenu is only used on chromeos, right?

[Azure Wei, 2016/07/01 03:48:05]

Yes, kShelfItemOnTrayForImeMenu is only for ChromeOs. 
Adds early return here.

+#endif  // defined(OS_CHROMEOS)
+  if (!window->GetProperty(kShelfItemOnTrayForImeMenu)) {
+    bounds = (shelf_view_->GetIdealBoundsOfItemIcon(id));
+    gfx::Point screen_origin;
+    views::View::ConvertPointToScreen(shelf_view_, &screen_origin);
+    offset = screen_origin.OffsetFromOrigin();
+  }
+  return bounds + offset;
 }
 
 void Shelf::UpdateIconPositionForWindow(aura::Window* window) {