[AutofillFeedback] Add description placeholder.

The CL adds a placeholder to the issue description section of the
autofill feedback form. Note that this targets an internal feature, so
no translation is necessary.

(cherry picked from commit 7385f0c)

Bug: 1407646, 1457142
Change-Id: I8bb5eec94a30c7a8d99b97bc33f2c1f278a1cc0a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4629310
Reviewed-by: Dominic Battre <battre@chromium.org>
Commit-Queue: Norge Vizcay <vizcay@google.com>
Reviewed-by: Marc Treib <treib@chromium.org>
Cr-Original-Commit-Position: refs/heads/main@{#1161190}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4641930
Reviewed-by: Christoph Schwering <schwering@google.com>
Cr-Commit-Position: refs/branch-heads/5845@{#134}
Cr-Branched-From: 5a5dff6-refs/heads/main@{#1160321}

chrome/browser/ui/autofill/autofill_context_menu_manager.cc

@@ -42,6 +42,16 @@ static constexpr int kAutofillContextCustomLast =
 static constexpr int kAutofillContextFeedback =
     IDC_CONTENT_CONTEXT_AUTOFILL_FEEDBACK;
 
+constexpr char kFeedbackPlaceholder[] =
+    "What steps did you just take?\n"
+    "(1)\n"
+    "(2)\n"
+    "(3)\n"
+    "\n"
+    "What was the expected result?\n"
+    "\n"
+    "What happened instead? (Please include the screenshot below)";
+
 base::Value::Dict LoadTriggerFormAndFieldLogs(
     AutofillManager* manager,
     content::RenderFrameHost* rfh,
@@ -246,7 +256,7 @@ void AutofillContextMenuManager::ExecuteAutofillFeedbackCommand(
   chrome::ShowFeedbackPage(
       browser_, chrome::kFeedbackSourceAutofillContextMenu,
       /*description_template=*/std::string(),
-      /*description_placeholder_text=*/std::string(),
+      /*description_placeholder_text=*/std::string(kFeedbackPlaceholder),
       /*category_tag=*/"dogfood_autofill_feedback",
       /*extra_diagnostics=*/std::string(),
       /*autofill_metadata=*/