Add appIconMask to notification API

ui/message_center/views/message_view.cc

Index: ui/message_center/views/message_view.cc
diff --git a/ui/message_center/views/message_view.cc b/ui/message_center/views/message_view.cc
index 11ff5485f86612ed4314d70b68a786060404df56..52bc4f29797594411aaea1084ba3b9c15570488e 100644
--- a/ui/message_center/views/message_view.cc
+++ b/ui/message_center/views/message_view.cc
@@ -15,6 +15,7 @@
 #include "ui/message_center/message_center.h"
 #include "ui/message_center/message_center_style.h"
 #include "ui/message_center/views/padded_button.h"
+#include "ui/message_center/views/small_image_mask.h"
 #include "ui/views/background.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/controls/image_view.h"
@@ -54,8 +55,9 @@ MessageView::MessageView(MessageViewController* controller,
       views::Background::CreateSolidBackground(kNotificationBackgroundColor));
   AddChildView(background_view_);
 
+  const gfx::ImageSkia masked_small_image = GetMaskedSmallImage(small_image);
   views::ImageView* small_image_view = new views::ImageView();
-  small_image_view->SetImage(small_image);
+  small_image_view->SetImage(masked_small_image);
   small_image_view->SetImageSize(gfx::Size(kSmallImageSize, kSmallImageSize));
   // The small image view should be added to view hierarchy by the derived
   // class. This ensures that it is on top of other views.
@@ -84,7 +86,9 @@ MessageView::~MessageView() {
 }
 
 void MessageView::UpdateWithNotification(const Notification& notification) {
-  small_image_view_->SetImage(notification.small_image().AsImageSkia());
+  const gfx::ImageSkia masked_small_image =
+      GetMaskedSmallImage(notification.small_image().AsImageSkia());
+  small_image_view_->SetImage(masked_small_image);
   display_source_ = notification.display_source();
 }