[DevTools] Migrate v8_inspector/public from String16 to String{View,Buffer}.

third_party/WebKit/Source/platform/v8_inspector/V8InjectedScriptHost.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/v8_inspector/V8InjectedScriptHost.h"
 
 #include "platform/v8_inspector/InjectedScriptNative.h"
 #include "platform/v8_inspector/V8Compat.h"
 #include "platform/v8_inspector/V8Debugger.h"
 #include "platform/v8_inspector/V8InspectorImpl.h"
@@ skipping 116 matching lines @@
         return;
     }
     if (value->IsProxy()) {
         info.GetReturnValue().Set(toV8StringInternalized(isolate, "proxy"));
         return;
     }
     if (value->IsPromise()) {
         info.GetReturnValue().Set(toV8StringInternalized(isolate, "promise"));
         return;
     }
-    String16 subtype = unwrapInspector(info)->client()->valueSubtype(value);
-    if (!subtype.isEmpty()) {
-        info.GetReturnValue().Set(toV8String(isolate, subtype));
+    std::unique_ptr<StringBuffer> subtype = unwrapInspector(info)->client()->valueSubtype(value);
+    if (subtype) {
+        info.GetReturnValue().Set(toV8String(isolate, subtype->string()));
         return;
     }
 }
 
 void V8InjectedScriptHost::getInternalPropertiesCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     if (info.Length() < 1)
         return;
     v8::Local<v8::Array> properties;
     if (unwrapInspector(info)->debugger()->internalProperties(info.GetIsolate()->GetCurrentContext(), info[0]).ToLocal(&properties))
@@ skipping 28 matching lines @@
         NOTREACHED();
         return;
     }
     v8::Local<v8::Object> target = info[0].As<v8::Proxy>();
     while (target->IsProxy())
         target = v8::Local<v8::Proxy>::Cast(target)->GetTarget();
     info.GetReturnValue().Set(target);
 }
 
 } // namespace v8_inspector