Use std::vector for m_HotKeys

Change-Id: I637fe236ae351bf6fcf8aa2913b94f55d997c612
Reviewed-on: https://pdfium-review.googlesource.com/3132
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>
diff --git a/xfa/fde/tto/fde_textout.cpp b/xfa/fde/tto/fde_textout.cpp
index 6d56ec7..7f6eddd 100644
--- a/xfa/fde/tto/fde_textout.cpp
+++ b/xfa/fde/tto/fde_textout.cpp
@@ -409,7 +409,7 @@
   float fLineStep = (m_fLineSpace > m_fFontSize) ? m_fLineSpace : m_fFontSize;
   float fLineStop = rect.bottom();
   m_fLinePos = rect.top;
-  m_hotKeys.RemoveAll();
+  m_HotKeys.clear();
   int32_t iStartChar = 0;
   int32_t iChars = 0;
   int32_t iPieceWidths = 0;
@@ -420,7 +420,7 @@
     wch = *pwsStr++;
     if (bHotKey && wch == L'&' && *(pStr - 1) != L'&') {
       if (iTxtLength > 0)
-        m_hotKeys.Add(iChars);
+        m_HotKeys.push_back(iChars);
       continue;
     }
     *pStr++ = wch;
@@ -730,11 +730,8 @@
     iLineCount++;
   }
   if (bHotKey) {
-    int32_t iHotKeys = m_hotKeys.GetSize();
-    int32_t iCount = GetCharRects(pPiece);
-    if (iCount > 0) {
-      for (int32_t i = 0; i < iHotKeys; i++) {
-        int32_t iCharIndex = m_hotKeys.GetAt(i);
+    if (GetCharRects(pPiece) > 0) {
+      for (int32_t iCharIndex : m_HotKeys) {
         if (iCharIndex >= pPiece->iStartChar &&
             iCharIndex < pPiece->iStartChar + pPiece->iChars) {
           CFX_RectF rect = m_rectArray[iCharIndex - pPiece->iStartChar];
diff --git a/xfa/fde/tto/fde_textout.h b/xfa/fde/tto/fde_textout.h
index bbc796d..6883a57 100644
--- a/xfa/fde/tto/fde_textout.h
+++ b/xfa/fde/tto/fde_textout.h
@@ -168,7 +168,7 @@
   int32_t m_iTotalLines;
   std::vector<FXTEXT_CHARPOS> m_CharPos;
   std::unique_ptr<CFDE_RenderDevice> m_pRenderDevice;
-  CFX_ArrayTemplate<int32_t> m_hotKeys;
+  std::vector<int32_t> m_HotKeys;
   std::vector<CFX_RectF> m_rectArray;
 };