Move a bunch of ash-only vector icons to ash/.

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

Index: ash/common/system/chromeos/palette/palette_tool.cc
diff --git a/ash/common/system/chromeos/palette/palette_tool.cc b/ash/common/system/chromeos/palette/palette_tool.cc
index d4ae846e719b9dfca91dd39898e25fc38bcb4627..4d3d408b76ea9803a2aa3d8867756f7c821d89dd 100644
--- a/ash/common/system/chromeos/palette/palette_tool.cc
+++ b/ash/common/system/chromeos/palette/palette_tool.cc
@@ -12,7 +12,7 @@
 #include "ash/common/system/chromeos/palette/tools/laser_pointer_mode.h"
 #include "ash/common/system/chromeos/palette/tools/magnifier_mode.h"
 #include "base/memory/ptr_util.h"
-#include "ui/gfx/vector_icons_public.h"
+#include "ui/gfx/paint_vector_icon.h"
 
 namespace ash {
 
@@ -38,8 +38,8 @@ void PaletteTool::OnDisable() {
   enabled_ = false;
 }
 
-gfx::VectorIconId PaletteTool::GetActiveTrayIcon() {
-  return gfx::VectorIconId::VECTOR_ICON_NONE;
+const gfx::VectorIcon& PaletteTool::GetActiveTrayIcon() const {
+  return gfx::kNoneIcon;
 }
 
 }  // namespace ash