Introduce isInPasswordField()

third_party/WebKit/Source/core/editing/EditingUtilities.cpp

Index: third_party/WebKit/Source/core/editing/EditingUtilities.cpp
diff --git a/third_party/WebKit/Source/core/editing/EditingUtilities.cpp b/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
index 334c6e74659019cc3cbbd7852cc4ecd23cadc981..c4fd9c04fa9072c1e1cc67fcd884951b81944d23 100644
--- a/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
+++ b/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
@@ -27,6 +27,7 @@
 
 #include "core/HTMLElementFactory.h"
 #include "core/HTMLNames.h"
+#include "core/InputTypeNames.h"
 #include "core/clipboard/DataObject.h"
 #include "core/dom/Document.h"
 #include "core/dom/ElementTraversal.h"
@@ -51,6 +52,7 @@
 #include "core/frame/UseCounter.h"
 #include "core/html/HTMLBRElement.h"
 #include "core/html/HTMLDivElement.h"
+#include "core/html/HTMLInputElement.h"
 #include "core/html/HTMLLIElement.h"
 #include "core/html/HTMLParagraphElement.h"
 #include "core/html/HTMLSpanElement.h"
@@ -2073,6 +2075,12 @@ Position adjustedSelectionStartForStyleComputation(
   return mostForwardCaretPosition(visiblePosition.deepEquivalent());
 }
 
+bool isInPasswordField(const Position& position) {
+  TextControlElement* textControl = enclosingTextControl(position);
+  return isHTMLInputElement(textControl) &&
+         toHTMLInputElement(textControl)->type() == InputTypeNames::password;
+}
+
 bool isTextSecurityNode(const Node* node) {
   return node && node->layoutObject() &&
          node->layoutObject()->style()->textSecurity() != TSNONE;