Add QuicStrCat.

net/quic/core/quic_bandwidth_test.cc

Index: net/quic/core/quic_bandwidth_test.cc
diff --git a/net/quic/core/quic_bandwidth_test.cc b/net/quic/core/quic_bandwidth_test.cc
index fd9e17db43210d9202c6dddbc550a8e7c3dfefeb..17b46e24fcdd9010a781da4033cd5b5c2d43432f 100644
--- a/net/quic/core/quic_bandwidth_test.cc
+++ b/net/quic/core/quic_bandwidth_test.cc
@@ -73,18 +73,14 @@ TEST_F(QuicBandwidthTest, Scale) {
 }
 
 TEST_F(QuicBandwidthTest, BytesPerPeriod) {
-  EXPECT_EQ(2000u,
-            QuicBandwidth::FromKBytesPerSecond(2000).ToBytesPerPeriod(
-                QuicTime::Delta::FromMilliseconds(1)));
-  EXPECT_EQ(2u,
-            QuicBandwidth::FromKBytesPerSecond(2000).ToKBytesPerPeriod(
-                QuicTime::Delta::FromMilliseconds(1)));
-  EXPECT_EQ(200000u,
-            QuicBandwidth::FromKBytesPerSecond(2000).ToBytesPerPeriod(
-                QuicTime::Delta::FromMilliseconds(100)));
-  EXPECT_EQ(200u,
-            QuicBandwidth::FromKBytesPerSecond(2000).ToKBytesPerPeriod(
-                QuicTime::Delta::FromMilliseconds(100)));
+  EXPECT_EQ(2000u, QuicBandwidth::FromKBytesPerSecond(2000).ToBytesPerPeriod(
+                       QuicTime::Delta::FromMilliseconds(1)));
+  EXPECT_EQ(2u, QuicBandwidth::FromKBytesPerSecond(2000).ToKBytesPerPeriod(
+                    QuicTime::Delta::FromMilliseconds(1)));
+  EXPECT_EQ(200000u, QuicBandwidth::FromKBytesPerSecond(2000).ToBytesPerPeriod(
+                         QuicTime::Delta::FromMilliseconds(100)));
+  EXPECT_EQ(200u, QuicBandwidth::FromKBytesPerSecond(2000).ToKBytesPerPeriod(
+                      QuicTime::Delta::FromMilliseconds(100)));
 }
 
 TEST_F(QuicBandwidthTest, TransferTime) {