Improvements to uses of base::SmallMap

ui/ozone/platform/drm/common/drm_util.cc

Index: ui/ozone/platform/drm/common/drm_util.cc
diff --git a/ui/ozone/platform/drm/common/drm_util.cc b/ui/ozone/platform/drm/common/drm_util.cc
index 59944118ae6d2b7ae45c4049fda153ca3a770bea..3c188e96174db4bfac3582131af754bccb7b75c8 100644
--- a/ui/ozone/platform/drm/common/drm_util.cc
+++ b/ui/ozone/platform/drm/common/drm_util.cc
@@ -13,7 +13,7 @@
 #include <algorithm>
 #include <utility>
 
-#include "base/containers/small_map.h"
+#include "base/containers/flat_map.h"
 #include "base/memory/ptr_util.h"
 #include "ui/display/util/edid_parser.h"
 
@@ -208,7 +208,6 @@ gfx::Size GetMaximumCursorSize(int fd) {
   }
   return gfx::Size(width, height);
 }
-
 HardwareDisplayControllerInfo::HardwareDisplayControllerInfo(
     ScopedDrmConnectorPtr connector,
     ScopedDrmCrtcPtr crtc,
@@ -236,8 +235,7 @@ GetAvailableDisplayControllerInfos(int fd) {
       available_connectors.push_back(std::move(connector));
   }
 
-  base::SmallMap<std::map<ScopedDrmConnectorPtr::element_type*, int>>
-      connector_crtcs;
+  base::flat_map<ScopedDrmConnectorPtr::element_type*, int> connector_crtcs;
   for (auto& c : available_connectors) {
     uint32_t possible_crtcs = 0;
     for (int i = 0; i < c->count_encoders; ++i) {