Add UMA stats for pen palette

ash/common/system/chromeos/palette/palette_ids.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/common/system/chromeos/palette/palette_ids.h"
 #include "base/logging.h"
 
 namespace ash {
 
 std::string PaletteToolIdToString(PaletteToolId tool_id) {
@@ skipping 21 matching lines @@
     case PaletteGroup::ACTION:
       return "ACTION";
     case PaletteGroup::MODE:
       return "MODE";
   }
 
   NOTREACHED();
   return std::string();
 }
 
+PaletteTrayOptions PaletteToolIdToPaletteTrayOptions(PaletteToolId tool_id) {
+  switch (tool_id) {
+    case PaletteToolId::NONE:
+      return PALETTE_OPTIONS_COUNT;
+    case PaletteToolId::CREATE_NOTE:
+      return PALETTE_NEW_NOTE;
+    case PaletteToolId::CAPTURE_REGION:
+      return PALETTE_CAPTURE_REGION;
+    case PaletteToolId::CAPTURE_SCREEN:
+      return PALETTE_CAPTURE_SCREEN;
+    case PaletteToolId::LASER_POINTER:
+      return PALETTE_LASER_POINTER;
+    case PaletteToolId::MAGNIFY:
+      return PALETTE_MAGNIFY;
+  }
+
+  NOTREACHED();
+  return PALETTE_OPTIONS_COUNT;
+}
+
+PaletteModeCancelType PaletteToolIdToPaletteModeCancelType(
+    PaletteToolId tool_id,
+    bool is_switched) {
+  PaletteModeCancelType type = PALETTE_MODE_CANCEL_TYPE_COUNT;
+  if (tool_id == PaletteToolId::LASER_POINTER) {
+    return is_switched ? PALETTE_MODE_LASER_POINTER_SWITCHED
+                       : PALETTE_MODE_LASER_POINTER_CANCELLED;
+  } else if (tool_id == PaletteToolId::MAGNIFY) {
+    return is_switched ? PALETTE_MODE_MAGNIFY_SWITCHED
+                       : PALETTE_MODE_MAGNIFY_CANCELLED;
+  }
+  return type;
+}
+
 }  // namespace ash