Rounded corners on dialogs under a feature flag

There are a few visual regressions that need to fixed before
we can release rounded corners on dialogs.

Bug: 822075
Change-Id: I071d42f2ac3de6ef4700e0b9f0a0367ebc28f618
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1521984
Commit-Queue: Sajad Maysam <[email protected]>
Reviewed-by: Scott Violet <[email protected]>
Reviewed-by: Bret Sepulveda <[email protected]>
Cr-Commit-Position: refs/heads/master@{#642235}
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index 1c77091f..3c98a35 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -3453,6 +3453,11 @@
 
 #if defined(TOOLKIT_VIEWS)
 
+const char kEnableMDRoundedCornersOnDialogsName[] =
+    "MD corners on secondary UI";
+const char kEnableMDRoundedCornersOnDialogsDescription[] =
+    "Increases corner radius on secondary UI.";
+
 const char kInstallableInkDropName[] = "Use InstallableInkDrop where supported";
 const char kInstallableInkDropDescription[] =
     "InstallableInkDrop is part of an InkDrop refactoring effort. This enables "