Move ElideString() from base/string_util.cc to app/text_elider.cc to ...

app/text_elider_unittest.cc

 // Copyright (c) 2010 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 "app/text_elider.h"
 #include "base/file_path.h"
 #include "base/i18n/rtl.h"
 #include "base/scoped_ptr.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ skipping 277 matching lines @@
     { "http://www.a/", "http://b/", -1 },
   };
 
   for (size_t i = 0; i < arraysize(tests); ++i) {
     gfx::SortedDisplayURL url1(GURL(tests[i].a), std::wstring());
     gfx::SortedDisplayURL url2(GURL(tests[i].b), std::wstring());
     EXPECT_EQ(tests[i].compare_result, url1.Compare(url2, collator.get()));
     EXPECT_EQ(-tests[i].compare_result, url2.Compare(url1, collator.get()));
   }
 }
+
+TEST(TextEliderTest, ElideString) {
+  struct TestData {
+    const wchar_t* input;
+    int max_len;
+    bool result;
+    const wchar_t* output;
+  } cases[] = {
+    { L"Hello", 0, true, L"" },
+    { L"", 0, false, L"" },
+    { L"Hello, my name is Tom", 1, true, L"H" },
+    { L"Hello, my name is Tom", 2, true, L"He" },
+    { L"Hello, my name is Tom", 3, true, L"H.m" },
+    { L"Hello, my name is Tom", 4, true, L"H..m" },
+    { L"Hello, my name is Tom", 5, true, L"H...m" },
+    { L"Hello, my name is Tom", 6, true, L"He...m" },
+    { L"Hello, my name is Tom", 7, true, L"He...om" },
+    { L"Hello, my name is Tom", 10, true, L"Hell...Tom" },
+    { L"Hello, my name is Tom", 100, false, L"Hello, my name is Tom" }
+  };
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
+    std::wstring output;
+    EXPECT_EQ(cases[i].result,
+              gfx::ElideString(cases[i].input, cases[i].max_len, &output));
+    EXPECT_TRUE(output == cases[i].output);
+  }
+}