Escape backslash (\x5C) for string value of search query.

This is not documented yet, but backslash characters should also be escaped.

BUG=232352
TEST=Ran unit_tests

Review URL: https://chromiumcodereview.appspot.com/14352007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@195298 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/google_apis/drive_api_util.cc

@@ -26,7 +26,13 @@ namespace util {
 
 std::string EscapeQueryStringValue(const std::string& str) {
   std::string result;
-  ReplaceChars(str, "'", "\\'", &result);
+  result.reserve(str.size());
+  for (size_t i = 0; i < str.size(); ++i) {
+    if (str[i] == '\\' || str[i] == '\'') {
+      result.push_back('\\');
+    }
+    result.push_back(str[i]);
+  }
   return result;
 }
 

chrome/browser/google_apis/drive_api_util_unittest.cc

@@ -14,6 +14,8 @@ TEST(DriveApiUtilTest, EscapeQueryStringValue) {
   EXPECT_EQ("abcde", EscapeQueryStringValue("abcde"));
   EXPECT_EQ("\\'", EscapeQueryStringValue("'"));
   EXPECT_EQ("\\'abcde\\'", EscapeQueryStringValue("'abcde'"));
+  EXPECT_EQ("\\\\", EscapeQueryStringValue("\\"));
+  EXPECT_EQ("\\\\\\'", EscapeQueryStringValue("\\'"));
 }
 
 TEST(DriveApiUtilTest, TranslateQuery) {