Export of internal Abseil changes.

--
f4bb8afa9376b4120f56f3beff7b07260da4a5c2 by CJ Johnson <johnsoncj@google.com>:

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PiperOrigin-RevId: 209630262
GitOrigin-RevId: f4bb8afa9376b4120f56f3beff7b07260da4a5c2
Change-Id: I3fedf35011d805ee4a20b92e073b43523b47d15b

absl/strings/escaping.h

@@ -17,7 +17,7 @@
 // File: escaping.h
 // -----------------------------------------------------------------------------
 //
-// This header file contains std::string utilities involved in escaping and
+// This header file contains string utilities involved in escaping and
 // unescaping strings in various ways.
 //
 
@@ -37,7 +37,7 @@ namespace absl {
 
 // CUnescape()
 //
-// Unescapes a `source` std::string and copies it into `dest`, rewriting C-style
+// Unescapes a `source` string and copies it into `dest`, rewriting C-style
 // escape sequences (http://en.cppreference.com/w/cpp/language/escape) into
 // their proper code point equivalents, returning `true` if successful.
 //
@@ -78,7 +78,7 @@ inline bool CUnescape(absl::string_view source, std::string* dest) {
 
 // CEscape()
 //
-// Escapes a 'src' std::string using C-style escapes sequences
+// Escapes a 'src' string using C-style escapes sequences
 // (http://en.cppreference.com/w/cpp/language/escape), escaping other
 // non-printable/non-whitespace bytes as octal sequences (e.g. "\377").
 //
@@ -91,7 +91,7 @@ std::string CEscape(absl::string_view src);
 
 // CHexEscape()
 //
-// Escapes a 'src' std::string using C-style escape sequences, escaping
+// Escapes a 'src' string using C-style escape sequences, escaping
 // other non-printable/non-whitespace bytes as hexadecimal sequences (e.g.
 // "\xFF").
 //
@@ -104,7 +104,7 @@ std::string CHexEscape(absl::string_view src);
 
 // Utf8SafeCEscape()
 //
-// Escapes a 'src' std::string using C-style escape sequences, escaping bytes as
+// Escapes a 'src' string using C-style escape sequences, escaping bytes as
 // octal sequences, and passing through UTF-8 characters without conversion.
 // I.e., when encountering any bytes with their high bit set, this function
 // will not escape those values, whether or not they are valid UTF-8.
@@ -112,47 +112,47 @@ std::string Utf8SafeCEscape(absl::string_view src);
 
 // Utf8SafeCHexEscape()
 //
-// Escapes a 'src' std::string using C-style escape sequences, escaping bytes as
+// Escapes a 'src' string using C-style escape sequences, escaping bytes as
 // hexadecimal sequences, and passing through UTF-8 characters without
 // conversion.
 std::string Utf8SafeCHexEscape(absl::string_view src);
 
 // Base64Unescape()
 //
-// Converts a `src` std::string encoded in Base64 to its binary equivalent, writing
+// Converts a `src` string encoded in Base64 to its binary equivalent, writing
 // it to a `dest` buffer, returning `true` on success. If `src` contains invalid
 // characters, `dest` is cleared and returns `false`.
 bool Base64Unescape(absl::string_view src, std::string* dest);
 
 // WebSafeBase64Unescape()
 //
-// Converts a `src` std::string encoded in Base64 to its binary equivalent, writing
+// Converts a `src` string encoded in Base64 to its binary equivalent, writing
 // it to a `dest` buffer, but using '-' instead of '+', and '_' instead of '/'.
 // If `src` contains invalid characters, `dest` is cleared and returns `false`.
 bool WebSafeBase64Unescape(absl::string_view src, std::string* dest);
 
 // Base64Escape()
 //
-// Encodes a `src` std::string into a `dest` buffer using base64 encoding, with
+// Encodes a `src` string into a `dest` buffer using base64 encoding, with
 // padding characters. This function conforms with RFC 4648 section 4 (base64).
 void Base64Escape(absl::string_view src, std::string* dest);
 
 // WebSafeBase64Escape()
 //
-// Encodes a `src` std::string into a `dest` buffer using '-' instead of '+' and
+// Encodes a `src` string into a `dest` buffer using '-' instead of '+' and
 // '_' instead of '/', and without padding. This function conforms with RFC 4648
 // section 5 (base64url).
 void WebSafeBase64Escape(absl::string_view src, std::string* dest);
 
 // HexStringToBytes()
 //
-// Converts an ASCII hex std::string into bytes, returning binary data of length
+// Converts an ASCII hex string into bytes, returning binary data of length
 // `from.size()/2`.
 std::string HexStringToBytes(absl::string_view from);
 
 // BytesToHexString()
 //
-// Converts binary data into an ASCII text std::string, returning a std::string of size
+// Converts binary data into an ASCII text string, returning a string of size
 // `2*from.size()`.
 std::string BytesToHexString(absl::string_view from);