Show delete button in input[type=search] only if the field is editable and focused/hovered.

Source/core/html/forms/SearchInputType.cpp

Index: Source/core/html/forms/SearchInputType.cpp
diff --git a/Source/core/html/forms/SearchInputType.cpp b/Source/core/html/forms/SearchInputType.cpp
index 8b83268a971eaeb201a49f9c06fb54155ecf07af..07817df7c2fa0d7687b67f63202f50cdfdc35e77 100644
--- a/Source/core/html/forms/SearchInputType.cpp
+++ b/Source/core/html/forms/SearchInputType.cpp
@@ -171,9 +171,9 @@ void SearchInputType::updateCancelButtonVisibility()
     if (!button)
         return;
     if (element().value().isEmpty())
-        button->setInlineStyleProperty(CSSPropertyVisibility, CSSValueHidden);
+        button->setInlineStyleProperty(CSSPropertyOpacity, 0.0, CSSPrimitiveValue::CSS_NUMBER);
     else
-        button->removeInlineStyleProperty(CSSPropertyVisibility);
+        button->removeInlineStyleProperty(CSSPropertyOpacity);
 }
 
 bool SearchInputType::supportsInputModeAttribute() const