Implement autocapitalize in Blink to be used by the embedder.

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 b149a803d85247a0eb9a468b5558c36edfe40765..133d18f9c82e04e06b4e017183f04025e01ac204 100644
--- a/Source/core/html/forms/SearchInputType.cpp
+++ b/Source/core/html/forms/SearchInputType.cpp
@@ -155,6 +155,12 @@ void SearchInputType::updateView()
     updateCancelButtonVisibility();
 }
 
+const AtomicString& SearchInputType::defaultAutocapitalize() const
+{
+    DEFINE_STATIC_LOCAL(const AtomicString, sentences, ("sentences", AtomicString::ConstructFromLiteral));
+    return sentences;
+}
+
 void SearchInputType::updateCancelButtonVisibility()
 {
     Element* button = element().closedShadowRoot()->getElementById(ShadowElementNames::clearButton());