Fix Harmony popover buttons being flush with their content.

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

Index: chrome/browser/ui/views/harmony/harmony_layout_provider.cc
diff --git a/chrome/browser/ui/views/harmony/harmony_layout_provider.cc b/chrome/browser/ui/views/harmony/harmony_layout_provider.cc
index fd1c37ad613a1a9663fb52d55b1a9c9c81b6b381..e6893f89c4234b5c3dc69d3a37fcf18cb2e93196 100644
--- a/chrome/browser/ui/views/harmony/harmony_layout_provider.cc
+++ b/chrome/browser/ui/views/harmony/harmony_layout_provider.cc
@@ -17,6 +17,7 @@ gfx::Insets HarmonyLayoutProvider::GetInsetsMetric(int metric) const {
 int HarmonyLayoutProvider::GetDistanceMetric(int metric) const {
   DCHECK_GE(metric, views::VIEWS_INSETS_MAX);
   switch (metric) {
+    case views::DISTANCE_BUBBLE_BUTTON_TOP_MARGIN:
     case views::DISTANCE_BUBBLE_CONTENTS_HORIZONTAL_MARGIN:
     case views::DISTANCE_BUBBLE_CONTENTS_VERTICAL_MARGIN:
     case views::DISTANCE_DIALOG_CONTENTS_HORIZONTAL_MARGIN:
@@ -42,8 +43,6 @@ int HarmonyLayoutProvider::GetDistanceMetric(int metric) const {
       return kHarmonyLayoutUnit / 2;
     case views::DISTANCE_DIALOG_BUTTON_BOTTOM_MARGIN:
       return kHarmonyLayoutUnit;
-    case DISTANCE_DIALOG_BUTTON_TOP:
-      return kHarmonyLayoutUnit;
     case views::DISTANCE_DIALOG_BUTTON_MINIMUM_WIDTH:
     case DISTANCE_BUTTON_MINIMUM_WIDTH:
       // Minimum label size plus padding.