Revert of Allow storing multiple replacements on SpellCheckResult

content/shell/test_runner/mock_spell_check.cc

Index: content/shell/test_runner/mock_spell_check.cc
diff --git a/content/shell/test_runner/mock_spell_check.cc b/content/shell/test_runner/mock_spell_check.cc
index 141dc40997d876744d04101a92871b3ee0557df8..52c7bcad6ea4efcf7057a2a4082bd00a78101f92 100644
--- a/content/shell/test_runner/mock_spell_check.cc
+++ b/content/shell/test_runner/mock_spell_check.cc
@@ -114,12 +114,12 @@ bool MockSpellCheck::IsMultiWordMisspelling(
     const blink::WebString& text,
     std::vector<blink::WebTextCheckingResult>* results) {
   if (text == "Helllo wordl.") {
-    results->push_back(blink::WebTextCheckingResult(
-        blink::kWebTextDecorationTypeSpelling, 0, 6,
-        std::vector<blink::WebString>({"Hello"})));
-    results->push_back(blink::WebTextCheckingResult(
-        blink::kWebTextDecorationTypeSpelling, 7, 5,
-        std::vector<blink::WebString>({"world"})));
+    results->push_back(
+        blink::WebTextCheckingResult(blink::kWebTextDecorationTypeSpelling, 0,
+                                     6, blink::WebString("Hello")));
+    results->push_back(
+        blink::WebTextCheckingResult(blink::kWebTextDecorationTypeSpelling, 7,
+                                     5, blink::WebString("world")));
     return true;
   }
   return false;