Use string(StringPiece) instead of StringPiece::as_string().

net/spdy/spdy_framer.cc

Index: net/spdy/spdy_framer.cc
diff --git a/net/spdy/spdy_framer.cc b/net/spdy/spdy_framer.cc
index bfe45968c5987fe7cd98e4a7fe14c74f4f738609..ee1b3c66e82c22340f53770a969bdc7a948b2ea1 100644
--- a/net/spdy/spdy_framer.cc
+++ b/net/spdy/spdy_framer.cc
@@ -1659,7 +1659,7 @@ bool SpdyFramer::ParseHeaderBlockInBuffer(const char* header_data,
                << " contains upper-case characters.";
       return false;
     }
-    std::string name = temp.as_string();
+    std::string name(temp);
 
     // Read header value.
     if (!reader.ReadStringPiece32(&temp)) {
@@ -1667,7 +1667,7 @@ bool SpdyFramer::ParseHeaderBlockInBuffer(const char* header_data,
                << num_headers << ").";
       return false;
     }
-    std::string value = temp.as_string();
+    std::string value(temp);
 
     // Ensure no duplicates.
     if (block->find(name) != block->end()) {