Some iwyu.

Skia is cleaning up several headers. This is exposing several missing
includes in Chromium code. Add the missing includes.

Change-Id: I94fcd73d6cf067aacf8d8680e91e141ba57328f8
Reviewed-on: https://chromium-review.googlesource.com/1099429Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Ben Wagner <bungeman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567013}

ash/wm/overview/overview_utils.h

@@ -10,6 +10,8 @@
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/compositor/layer_type.h"
 
+#include <memory>
+
 namespace aura {
 class Window;
 }  // namespace aura

chrome/browser/ui/views/harmony/material_refresh_layout_provider.cc

@@ -7,6 +7,8 @@
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/views/layout/layout_provider.h"
 
+#include <algorithm>
+
 int MaterialRefreshLayoutProvider::GetDistanceMetric(int metric) const {
   switch (metric) {
     case views::DistanceMetric::DISTANCE_CONTROL_VERTICAL_TEXT_PADDING: