fix off by one in offset values for cf_html.

base/clipboard_util.cc

Index: base/clipboard_util.cc
diff --git a/base/clipboard_util.cc b/base/clipboard_util.cc
index a9e7d2afbf4b40fb651b05df1783eb12e50531a4..e56166d87673a55f3b262e61fef688c0e11bb445 100644
--- a/base/clipboard_util.cc
+++ b/base/clipboard_util.cc
@@ -429,7 +429,7 @@ std::string ClipboardUtil::HtmlToCFHtml(const std::string& html,
       MAX_DIGITS * 4;
   if (!base_url.empty()) {
     start_html_offset += strlen(source_url_prefix) +
-        base_url.length() + 1;
+        base_url.length() + 2;  // Add 2 for \r\n.
   }
   size_t start_fragment_offset = start_html_offset + strlen(start_markup);
   size_t end_fragment_offset = start_fragment_offset + html.length();