Fix AutocompleteMatch DCHECK() triggered by |RenderViewContextMenu::AppendSearchProvider()|.

base/string_util.h

Index: base/string_util.h
===================================================================
--- base/string_util.h	(revision 108864)
+++ base/string_util.h	(working copy)
@@ -173,9 +173,9 @@
 
 BASE_EXPORT extern const char kUtf8ByteOrderMark[];
 
-// Removes characters in |remove_chars| from anywhere in input.  Returns true if
-// any characters were removed.  |remove_chars| must be null-terminated.
-// NOTE: Safe to use the same variable for both input and output.
+// Removes characters in |remove_chars| from anywhere in |input|.  Returns true
+// if any characters were removed.  |remove_chars| must be null-terminated.
+// NOTE: Safe to use the same variable for both |input| and |output|.
 BASE_EXPORT bool RemoveChars(const string16& input,
                              const char16 remove_chars[],
                              string16* output);
@@ -183,9 +183,23 @@
                              const char remove_chars[],
                              std::string* output);
 
-// Removes characters in |trim_chars| from the beginning and end of input.
+// Replaces characters in |replace_chars| from anywhere in |input| with
+// |replace_with|.  Each character in |replace_chars| will be replaced with
+// the |replace_with| string.  Returns true if any characters were replaced.
+// |replace_chars| must be null-terminated.
+// NOTE: Safe to use the same variable for both |input| and |output|.
+BASE_EXPORT bool ReplaceChars(const string16& input,
+                              const char16 replace_chars[],
+                              const string16& replace_with,
+                              string16* output);
+BASE_EXPORT bool ReplaceChars(const std::string& input,
+                              const char replace_chars[],
+                              const std::string& replace_with,
+                              std::string* output);
+
+// Removes characters in |trim_chars| from the beginning and end of |input|.
 // |trim_chars| must be null-terminated.
-// NOTE: Safe to use the same variable for both input and output.
+// NOTE: Safe to use the same variable for both |input| and |output|.
 BASE_EXPORT bool TrimString(const std::wstring& input,
                             const wchar_t trim_chars[],
                             std::wstring* output);