Use explicit WebString conversions in clipboard and drag-and-drop code

content/renderer/clipboard_utils.cc

Index: content/renderer/clipboard_utils.cc
diff --git a/content/renderer/clipboard_utils.cc b/content/renderer/clipboard_utils.cc
index 37583e49b28c307abbceac3a77471cdf255a5367..a3a69a04de0e6b1d5c51c2cea62384024d2c3a2a 100644
--- a/content/renderer/clipboard_utils.cc
+++ b/content/renderer/clipboard_utils.cc
@@ -17,8 +17,7 @@ std::string URLToMarkup(const blink::WebURL& url,
   markup.append(url.string().utf8());
   markup.append("\">");
   // TODO(darin): HTML escape this
-  markup.append(
-      net::EscapeForHTML(base::UTF16ToUTF8(base::StringPiece16(title))));
+  markup.append(net::EscapeForHTML(title.utf8()));
   markup.append("</a>");
   return markup;
 }
@@ -30,8 +29,7 @@ std::string URLToImageMarkup(const blink::WebURL& url,
   markup.append("\"");
   if (!title.isEmpty()) {
     markup.append(" alt=\"");
-    markup.append(
-        net::EscapeForHTML(base::UTF16ToUTF8(base::StringPiece16(title))));
+    markup.append(net::EscapeForHTML(title.utf8()));
     markup.append("\"");
   }
   markup.append("/>");