Add create note palette action.

ash/common/wm_shell.h

Index: ash/common/wm_shell.h
diff --git a/ash/common/wm_shell.h b/ash/common/wm_shell.h
index c064efded59347fd85c8fb0c3df29546c5ca8f04..d45245df18b93668086b6f42902f32fe51150312 100644
--- a/ash/common/wm_shell.h
+++ b/ash/common/wm_shell.h
@@ -127,6 +127,9 @@ class ASH_EXPORT WmShell {
 
   PaletteDelegate* palette_delegate() { return palette_delegate_.get(); }
 
+  void SetPaletteDelegateForTesting(

[James Cook, 2016/08/16 22:08:45]

nit: Move this down by SetShelfDelegateForTesting

[jdufault, 2016/08/16 22:45:52]

Ah, good. I spent some time looking for another testing function but never found
any.

+      std::unique_ptr<PaletteDelegate> palette_delegate);
+
   ShelfDelegate* shelf_delegate() { return shelf_delegate_.get(); }
 
   ShelfModel* shelf_model() { return shelf_model_.get(); }