Split printing utility IPC messages into its own file.

chrome/utility/chrome_content_utility_ipc_whitelist.cc

Index: chrome/utility/chrome_content_utility_ipc_whitelist.cc
diff --git a/chrome/utility/chrome_content_utility_ipc_whitelist.cc b/chrome/utility/chrome_content_utility_ipc_whitelist.cc
index fddac1368c24b93f4d861e1d6e50224486067660..c831d178da08ab6a89a417f628312a4839595d46 100644
--- a/chrome/utility/chrome_content_utility_ipc_whitelist.cc
+++ b/chrome/utility/chrome_content_utility_ipc_whitelist.cc
@@ -5,8 +5,6 @@
 #include "chrome/utility/chrome_content_utility_ipc_whitelist.h"
 #include "chrome/common/chrome_utility_messages.h"
 
-namespace chrome {
-
 const uint32 kMessageWhitelist[] = {
 #ifdef OS_WIN
     ChromeUtilityHostMsg_GetAndEncryptWiFiCredentials::ID,
@@ -16,5 +14,3 @@ const uint32 kMessageWhitelist[] = {
     ChromeUtilityMsg_ImageWriter_Verify::ID};
 
 const size_t kMessageWhitelistSize = arraysize(kMessageWhitelist);
-
-}  // namespace chrome