INPUT/TEXTAREA elements: Dispatch 'select' event only if text selection is changed.

third_party/WebKit/Source/core/html/forms/TextFieldInputType.cpp

Index: third_party/WebKit/Source/core/html/forms/TextFieldInputType.cpp
diff --git a/third_party/WebKit/Source/core/html/forms/TextFieldInputType.cpp b/third_party/WebKit/Source/core/html/forms/TextFieldInputType.cpp
index 1893fdf34a1e6f2d69bbb139de7e8c9d4289462c..8de50a5a91b531a3bdfb464306e843808a6bf67d 100644
--- a/third_party/WebKit/Source/core/html/forms/TextFieldInputType.cpp
+++ b/third_party/WebKit/Source/core/html/forms/TextFieldInputType.cpp
@@ -148,7 +148,8 @@ bool TextFieldInputType::canSetSuggestedValue() {
 
 void TextFieldInputType::setValue(const String& sanitizedValue,
                                   bool valueChanged,
-                                  TextFieldEventBehavior eventBehavior) {
+                                  TextFieldEventBehavior eventBehavior,
+                                  TextControlSetValueSelection selection) {
   // We don't use InputType::setValue.  TextFieldInputType dispatches events
   // different way from InputType::setValue.
   element().setNonAttributeValue(sanitizedValue);
@@ -156,8 +157,10 @@ void TextFieldInputType::setValue(const String& sanitizedValue,
   if (valueChanged)
     element().updateView();
 
-  unsigned max = visibleValue().length();
-  element().setSelectionRange(max, max);
+  if (selection == TextControlSetValueSelection::kSetSelectionToEnd) {
+    unsigned max = visibleValue().length();
+    element().setSelectionRange(max, max);
+  }
 
   if (!valueChanged)
     return;