Prefer System Flash over non-local component updated Flash.

base/files/file_util_unittest.cc

 // Copyright (c) 2012 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 <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <fstream>
 #include <set>
@@ skipping 36 matching lines @@
 #include "base/android/content_uri_utils.h"
 #endif
 
 // This macro helps avoid wrapped lines in the test structs.
 #define FPL(x) FILE_PATH_LITERAL(x)
 
 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)
 typedef struct _REPARSE_DATA_BUFFER {
   ULONG  ReparseTag;
   USHORT  ReparseDataLength;
   USHORT  Reserved;
   union {
     struct {
       USHORT SubstituteNameOffset;
@@ skipping 1590 matching lines @@
   }
 
   // Restore the original $TMP.
   if (original_tmp) {
     ::_tputenv_s(kTmpKey, original_tmp);
     free(original_tmp);
   } else {
     ::_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) {
   FilePath temp_files[3];
   for (int i = 0; i < 3; i++) {
     ASSERT_TRUE(CreateTemporaryFile(&(temp_files[i])));
     EXPECT_TRUE(PathExists(temp_files[i]));
     EXPECT_FALSE(DirectoryExists(temp_files[i]));
   }
   for (int i = 0; i < 3; i++)
@@ skipping 843 matching lines @@
   // Trying to close it should crash. This is important for security.
   EXPECT_DEATH(CloseWithScopedFD(fds[1]), "");
 #endif
 }
 
 #endif  // defined(OS_POSIX)
 
 }  // namespace
 
 }  // namespace base