Escaping file names correctly. Also fixed a crush in chromeos debug build while saving a web page.

net/base/escape_unittest.cc

 // Copyright (c) 2011 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 <algorithm>
 #include <string>
 
 #include "net/base/escape.h"
 
 #include "base/basictypes.h"
@@ skipping 137 matching lines @@
       "<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ"
       "[\\]^_`abcdefghijklmnopqrstuvwxyz"
       "{|}~\x7f\x80\xff"),
     // Escaped
     "%02%0A%1D+!%22%23%24%25%26%27()*%2B,-./0123456789:%3B"
     "%3C%3D%3E%3F%40ABCDEFGHIJKLMNOPQRSTUVWXYZ"
     "%5B%5C%5D%5E_%60abcdefghijklmnopqrstuvwxyz"
     "%7B%7C%7D~%7F%80%FF");
 }
 
+TEST(EscapeTest, EscapeUrlEncodedDataSpace) {
+  ASSERT_EQ(
+    EscapeUrlEncodedData(
+      "a b"),
+    // Escaped
+    "a+b");
+  ASSERT_EQ(
+    EscapeUrlEncodedData(
+      "a b", false),
+    // Escaped
+    "a%20b");
+}
+
 TEST(EscapeTest, UnescapeURLComponentASCII) {
   const UnescapeURLCaseASCII unescape_cases[] = {
     {"", UnescapeRule::NORMAL, ""},
     {"%2", UnescapeRule::NORMAL, "%2"},
     {"%%%%%%", UnescapeRule::NORMAL, "%%%%%%"},
     {"Don't escape anything", UnescapeRule::NORMAL, "Don't escape anything"},
     {"Invalid %escape %2", UnescapeRule::NORMAL, "Invalid %escape %2"},
     {"Some%20random text %25%2dOK", UnescapeRule::NONE,
      "Some%20random text %25%2dOK"},
     {"Some%20random text %25%2dOK", UnescapeRule::NORMAL,
@@ skipping 263 matching lines @@
   adjustments.push_back(9);
   adjustments.push_back(15);
   std::for_each(offsets.begin(), offsets.end(),
                 AdjustEncodingOffset(adjustments));
   size_t expected_2[] = {0, kNpos, kNpos, 1, 2, 3, 4, kNpos, kNpos, 5, kNpos,
                          kNpos, 6, 7, 8, 9, kNpos, kNpos};
   EXPECT_EQ(offsets.size(), arraysize(expected_2));
   for (size_t i = 0; i < arraysize(expected_2); ++i)
     EXPECT_EQ(expected_2[i], offsets[i]);
 }