[DevTools] Reduce API surface of String16.

third_party/WebKit/Source/platform/inspector_protocol/Maybe.h

Index: third_party/WebKit/Source/platform/inspector_protocol/Maybe.h
diff --git a/third_party/WebKit/Source/platform/inspector_protocol/Maybe.h b/third_party/WebKit/Source/platform/inspector_protocol/Maybe.h
index cf372e0bbe2015cdbaff282615ce10041fcc30e2..560e7da9629b970dda037542fa640143a78d1be3 100644
--- a/third_party/WebKit/Source/platform/inspector_protocol/Maybe.h
+++ b/third_party/WebKit/Source/platform/inspector_protocol/Maybe.h
@@ -13,8 +13,6 @@
 namespace blink {
 namespace protocol {
 
-class String16;
-
 template<typename T>
 class Maybe {
 public:
@@ -70,10 +68,10 @@ public:
 };
 
 template<>
-class Maybe<String> : public MaybeBase<String> {
+class Maybe<InspectorProtocolConvenienceStringType> : public MaybeBase<InspectorProtocolConvenienceStringType> {
 public:
     Maybe() { }
-    Maybe(const String& value) : MaybeBase(value) { }
+    Maybe(const InspectorProtocolConvenienceStringType& value) : MaybeBase(value) { }
     using MaybeBase::operator=;
 };