Allow WebString.utf8() to take UTF8ConversionMode

third_party/WebKit/Source/platform/exported/WebString.cpp

Index: third_party/WebKit/Source/platform/exported/WebString.cpp
diff --git a/third_party/WebKit/Source/platform/exported/WebString.cpp b/third_party/WebKit/Source/platform/exported/WebString.cpp
index 5ff32e9381c8c28c8495f38d2ef4ed4e45382cee..b2dbb187e638e17a3b7a52242cc7d57469cb19d7 100644
--- a/third_party/WebKit/Source/platform/exported/WebString.cpp
+++ b/third_party/WebKit/Source/platform/exported/WebString.cpp
@@ -38,6 +38,18 @@
 #include "wtf/text/StringView.h"
 #include "wtf/text/WTFString.h"
 
+#define STATIC_ASSERT_ENUM(a, b)                            \
+  static_assert(static_cast<int>(a) == static_cast<int>(b), \
+                "mismatching enums: " #a)
+
+STATIC_ASSERT_ENUM(WTF::LenientUTF8Conversion,
+                   blink::WebString::LenientUTF8Conversion);
+STATIC_ASSERT_ENUM(WTF::StrictUTF8Conversion,
+                   blink::WebString::StrictUTF8Conversion);
+STATIC_ASSERT_ENUM(
+    WTF::StrictUTF8ConversionReplacingUnpairedSurrogatesWithFFFD,
+    blink::WebString::StrictUTF8ConversionReplacingUnpairedSurrogatesWithFFFD);
+
 namespace blink {
 
 void WebString::reset() {
@@ -68,7 +80,7 @@ const WebUChar* WebString::data16() const {
   return !m_private.isNull() && !is8Bit() ? m_private->characters16() : 0;
 }
 
-std::string WebString::utf8() const {
+std::string WebString::utf8(UTF8ConversionMode mode) const {
   StringUTF8Adaptor utf8(m_private.get());
   return std::string(utf8.data(), utf8.length());
 }