Views/Harmony: Use LayoutDelegate::GetMetric() for views::kPanelHorizMargin.

chrome/browser/ui/views/extensions/extension_install_dialog_view.cc

Index: chrome/browser/ui/views/extensions/extension_install_dialog_view.cc
diff --git a/chrome/browser/ui/views/extensions/extension_install_dialog_view.cc b/chrome/browser/ui/views/extensions/extension_install_dialog_view.cc
index 2ca506cb4531984cce1406c2f9ae0d43ae41c7a4..a29b4b01b8635deaac336560a905d7735692daab 100644
--- a/chrome/browser/ui/views/extensions/extension_install_dialog_view.cc
+++ b/chrome/browser/ui/views/extensions/extension_install_dialog_view.cc
@@ -25,6 +25,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/scoped_tabbed_browser_displayer.h"
+#include "chrome/browser/ui/views/harmony/layout_delegate.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/constrained_window/constrained_window_views.h"
@@ -253,8 +254,10 @@ void ExtensionInstallDialogView::InitView() {
                     views::GridLayout::FILL);
   }
 
-  const int content_width =
-      left_column_width + views::kPanelHorizMargin + kIconSize;
+  const int content_width = left_column_width +
+                            LayoutDelegate::Get()->GetMetric(
+                                LayoutDelegate::Metric::PANEL_CONTENT_MARGIN) +
+                            kIconSize;
 
   // Create the scrollable view which will contain the permissions and retained
   // files/devices. It will span the full content width.
@@ -426,7 +429,9 @@ views::GridLayout* ExtensionInstallDialogView::CreateLayout(
                         views::GridLayout::USE_PREF,
                         0,  // no fixed width
                         left_column_width);
-  column_set->AddPaddingColumn(0, views::kPanelHorizMargin);
+  column_set->AddPaddingColumn(
+      0, LayoutDelegate::Get()->GetMetric(
+             LayoutDelegate::Metric::PANEL_CONTENT_MARGIN));
   column_set->AddColumn(views::GridLayout::TRAILING, views::GridLayout::LEADING,
                         0,  // no resizing
                         views::GridLayout::USE_PREF,