Migrate WTF::Deque::append() to ::push_back()

third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp

Index: third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
diff --git a/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp b/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
index 9c2a9302531b97feebbd15ed31c730b02dfe355d..51efd1d1cddafb2341a24317f983430eaea4ebbc 100644
--- a/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
+++ b/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
@@ -386,7 +386,7 @@ void HTMLDocumentParser::notifyPendingTokenizedChunks() {
   }
 
   for (auto& chunk : pendingChunks)
-    m_speculations.append(std::move(chunk));
+    m_speculations.push_back(std::move(chunk));
 
   if (!isPaused() && !isScheduledForResume()) {
     if (m_tasksWereSuspended)