Add base::HostToNetXX() & NetToHostXX(), and use them to replace htonX() & ntohX() in Chrome.

net/spdy/spdy_frame_reader_test.cc

Index: net/spdy/spdy_frame_reader_test.cc
diff --git a/net/spdy/spdy_frame_reader_test.cc b/net/spdy/spdy_frame_reader_test.cc
index aeaca949427e2c6ab367e55220f9858dcb9176cb..e308131fcb68a7d8f9cd9c203ace25882b10f419 100644
--- a/net/spdy/spdy_frame_reader_test.cc
+++ b/net/spdy/spdy_frame_reader_test.cc
@@ -15,7 +15,7 @@ namespace spdy {
 TEST(SpdyFrameReaderTest, ReadUInt16) {
   // Frame data in network byte order.
   const uint16 kFrameData[] = {
-    htons(1), htons(1<<15),
+    base::HostToNet16(1), base::HostToNet16(1<<15),
   };
 
   SpdyFrameReader frame_reader(reinterpret_cast<const char *>(kFrameData),
@@ -35,7 +35,7 @@ TEST(SpdyFrameReaderTest, ReadUInt16) {
 TEST(SpdyFrameReaderTest, ReadUInt32) {
   // Frame data in network byte order.
   const uint32 kFrameData[] = {
-    htonl(1), htonl(1<<31),
+    base::HostToNet32(1), base::HostToNet32(1<<31),
   };
 
   SpdyFrameReader frame_reader(reinterpret_cast<const char *>(kFrameData),