[i18n] $i18nPolymer to backslash escape

ui/base/template_expressions_unittest.cc

 // 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 "ui/base/template_expressions.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace ui {
 
@@ skipping 36 matching lines @@
           substitutions));
 }
 
 TEST(TemplateExpressionsTest, ReplaceTemplateExpressionsRaw) {
   static TemplateReplacements substitutions;
   substitutions["rawSample"] = "<a href=\"example.com\">hello</a>";
   EXPECT_EQ("<a href=\"example.com\">hello</a>",
             ReplaceTemplateExpressions("$i18nRaw{rawSample}", substitutions));
 }
 
+TEST(TemplateExpressionsTest, ReplaceTemplateExpressionsPolymerQuoting) {
+  static TemplateReplacements substitutions;
+  substitutions["singleSample"] = "don't do it";
+  substitutions["doubleSample"] = "\"moo\" said the cow";
+  // This resolves |Call('don\'t do it')| to Polymer, which is presented as
+  // |don't do it| to the user.
+  EXPECT_EQ("<div>[[Call('don\\'t do it')]]",
+            ReplaceTemplateExpressions(
+                "<div>[[Call('$i18nPolymer{singleSample}')]]", substitutions));
+  // This resolves |Call('\"moo\" said the cow')| to Polymer, which is
+  // presented as |"moo" said the cow| to the user.
+  EXPECT_EQ("<div>[[Call('\\\"moo\\\" said the cow')]]",
+            ReplaceTemplateExpressions(
+                "<div>[[Call('$i18nPolymer{doubleSample}')]]", substitutions));
+}
+
+TEST(TemplateExpressionsTest, ReplaceTemplateExpressionsPolymerMixed) {
+  static TemplateReplacements substitutions;
+  substitutions["punctuationSample"] = "a\"b'c<d>e&f";
+  substitutions["htmlSample"] = "<div>hello</div>";
+  EXPECT_EQ("a\\\"b\\'c<d>e&f",
+            ReplaceTemplateExpressions("$i18nPolymer{punctuationSample}",
+                                       substitutions));
+  EXPECT_EQ("<div>hello</div>", ReplaceTemplateExpressions(
+                                    "$i18nPolymer{htmlSample}", substitutions));
+  EXPECT_EQ("multiple: <div>hello</div>, a\\\"b\\'c<d>e&f.",
+            ReplaceTemplateExpressions("multiple: $i18nPolymer{htmlSample}, "
+                                       "$i18nPolymer{punctuationSample}.",
+                                       substitutions));
+}
+
 }  // namespace ui