Respect UTF-8 detection result for local file resources

third_party/WebKit/Source/platform/text/TextEncodingDetectorTest.cpp

 // Copyright 2016 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/text/TextEncodingDetector.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "wtf/text/TextEncoding.h"
 
 namespace blink {
@@ skipping 78 matching lines @@
 TEST(TextEncodingDetectorTest, UTF8DetectionShouldFail) {
   std::string utf8Bytes =
       "tnegirjji gosa gii beare s\xC3\xA1htt\xC3\xA1 \xC4\x8D\xC3"
       "\xA1llit artihkkaliid. Maid don s\xC3\xA1ht\xC3\xA1t dievasmah";
   WTF::TextEncoding encoding;
   bool result = detectTextEncoding(utf8Bytes.c_str(), utf8Bytes.length(),
                                    nullptr, nullptr, nullptr, &encoding);
   EXPECT_FALSE(result);
 }
 
+TEST(TextEncodingDetectorTest, RespectUTF8DetectionForFileResource) {
+  std::string utf8Bytes =
+      "tnegirjji gosa gii beare s\xC3\xA1htt\xC3\xA1 \xC4\x8D\xC3"
+      "\xA1llit artihkkaliid. Maid don s\xC3\xA1ht\xC3\xA1t dievasmah";
+  WTF::TextEncoding encoding;
+  bool result = detectTextEncoding(utf8Bytes.c_str(), utf8Bytes.length(),
+                                   nullptr, "file:///text", nullptr, &encoding);
+  EXPECT_TRUE(result);
+}
+
 }  // namespace blink