Use explicit WebString conversions in translate code

chrome/renderer/translate/translate_script_browsertest.cc

 // Copyright 2013 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 "base/macros.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/test/base/chrome_render_view_test.h"
 #include "components/grit/components_resources.h"
 #include "components/translate/core/common/translate_errors.h"
@@ skipping 70 matching lines @@
   void InjectElementLibrary() {
     std::string script;
     base::StringPiece translate_js = ResourceBundle::GetSharedInstance().
         GetRawDataResource(IDR_TRANSLATE_JS);
     translate_js.CopyToString(&script);
     script += kElementJs;
     ExecuteScript(script);
   }
 
   void ExecuteScript(const std::string& script) {
-    WebScriptSource source = WebScriptSource(base::ASCIIToUTF16(script));
+    WebScriptSource source =
+        WebScriptSource(blink::WebString::fromASCII(script));
     GetMainFrame()->executeScript(source);
   }
 
   bool GetError() {
     return ExecuteScriptAndGetBoolResult(kError);
   }
 
   double GetErrorCode() {
     return ExecuteScriptAndGetNumberResult(kErrorCode);
   }
 
   bool IsLibReady() {
     return ExecuteScriptAndGetBoolResult(kLibReady);
   }
 
  private:
   void SetUp() override { ChromeRenderViewTest::SetUp(); }
 
   void TearDown() override { ChromeRenderViewTest::TearDown(); }
 
   double ExecuteScriptAndGetNumberResult(const std::string& script) {
-    WebScriptSource source = WebScriptSource(base::ASCIIToUTF16(script));
+    WebScriptSource source =
+        WebScriptSource(blink::WebString::fromASCII(script));
     v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
     v8::Local<v8::Value> result =
         GetMainFrame()->executeScriptAndReturnValue(source);
     if (result.IsEmpty() || !result->IsNumber()) {
       NOTREACHED();
       // TODO(toyoshim): Return NaN here and the real implementation in
       // TranslateHelper::ExecuteScriptAndGetDoubleResult().
       return 0.0;
     }
     return result->NumberValue();
   }
 
   bool ExecuteScriptAndGetBoolResult(const std::string& script) {
-    WebScriptSource source = WebScriptSource(base::ASCIIToUTF16(script));
+    WebScriptSource source =
+        WebScriptSource(blink::WebString::fromASCII(script));
     v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
     v8::Local<v8::Value> result =
         GetMainFrame()->executeScriptAndReturnValue(source);
     if (result.IsEmpty() || !result->IsBoolean()) {
       NOTREACHED();
       return false;
     }
     return result->BooleanValue();
   }
 
@@ skipping 92 matching lines @@
   EXPECT_FALSE(GetError());
   EXPECT_EQ(translate::TranslateErrors::NONE, GetErrorCode());
 
   ExecuteScript(kTranslate);
 
   EXPECT_TRUE(GetError());
   EXPECT_EQ(translate::TranslateErrors::UNSUPPORTED_LANGUAGE, GetErrorCode());
 }
 
 // TODO(toyoshim): Add test for onLoadJavaScript.