Prefer System Flash over non-local component updated Flash.

base/files/file_util_unittest.cc

Index: base/files/file_util_unittest.cc
diff --git a/base/files/file_util_unittest.cc b/base/files/file_util_unittest.cc
index a0d0a28927f6eae9c672fa201f30291765300369..a158212d9a7c4cc4aba3aac5c8d9f8b4b715bc17 100644
--- a/base/files/file_util_unittest.cc
+++ b/base/files/file_util_unittest.cc
@@ -54,6 +54,11 @@ namespace base {
 
 namespace {
 
+struct UnaryBooleanTestData {
+  const FilePath::CharType* input;
+  bool expected;
+};
+
 // To test that NormalizeFilePath() deals with NTFS reparse points correctly,
 // we need functions to create and delete reparse points.
 #if defined(OS_WIN)
@@ -1664,6 +1669,30 @@ TEST_F(FileUtilTest, GetTempDirTest) {
     ::_tputenv_s(kTmpKey, _T(""));
   }
 }
+
+TEST_F(FileUtilTest, IsOnNetworkDrive) {
+  const struct UnaryBooleanTestData cases[] = {
+    { FPL(""),                               false },
+    { FPL("c:\\"),                           false },
+    { FPL("c:"),                             false },
+    { FPL("c:\\windows\\notepad.exe"),       false },
+    /*

[cpu_(ooo_6.6-7.5), 2016/04/15 20:55:33]

hmmm ... rather use an environment variable, so even QA can test, in other words
it it could be CHROME_TEST_FILE_SERVER or something like that.

+    // Uncomment and edit, for manual testing only.
+    { FPL("\\\\server\\share\\file.txt"),    true },
+    { FPL("\\\\server\\share"),              true },
+    { FPL("\\\\server\\share\\"),            true },
+    { FPL("\\\\server\\"),                   false },
+    { FPL("\\\\server"),                     false },
+    */
+  };
+
+  for (size_t i = 0; i < arraysize(cases); ++i) {
+    FilePath input(cases[i].input);
+    bool observed = IsOnNetworkDrive(input);
+    EXPECT_EQ(cases[i].expected, observed) <<
+              "i: " << i << ", input: " << input.value();
+  }
+}
 #endif  // OS_WIN
 
 TEST_F(FileUtilTest, CreateTemporaryFileTest) {