Rewrite std::string("") to std::string(), Linux edition.

net/spdy/spdy_session_spdy2_unittest.cc

Index: net/spdy/spdy_session_spdy2_unittest.cc
diff --git a/net/spdy/spdy_session_spdy2_unittest.cc b/net/spdy/spdy_session_spdy2_unittest.cc
index 0b93815736f38eac014f07daeb179ae5d5362d44..1d7026f59402edc5a1b4c1c612365080b3448d55 100644
--- a/net/spdy/spdy_session_spdy2_unittest.cc
+++ b/net/spdy/spdy_session_spdy2_unittest.cc
@@ -678,8 +678,8 @@ void IPPoolingTest(SpdyPoolCloseSessionsType close_sessions_type) {
   SpdySessionDependencies session_deps;
   session_deps.host_resolver->set_synchronous_mode(true);
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_hosts); i++) {
-    session_deps.host_resolver->rules()->AddIPLiteralRule(test_hosts[i].name,
-        test_hosts[i].iplist, "");
+    session_deps.host_resolver->rules()->AddIPLiteralRule(
+        test_hosts[i].name, test_hosts[i].iplist, std::string());
 
     // This test requires that the HostResolver cache be populated.  Normal
     // code would have done this already, but we do it manually.
@@ -1139,7 +1139,7 @@ TEST_F(SpdySessionSpdy2Test, CloseSessionWithTwoCreatedStreams) {
   EXPECT_EQ(0u, spdy_stream2->stream_id());
 
   // Ensure we don't crash while closing the session.
-  session->CloseSessionOnError(ERR_ABORTED, true, "");
+  session->CloseSessionOnError(ERR_ABORTED, true, std::string());
 
   EXPECT_TRUE(spdy_stream1->closed());
   EXPECT_TRUE(spdy_stream2->closed());