Split printing utility IPC messages into its own file.

chrome/utility/chrome_content_utility_ipc_whitelist.h

Index: chrome/utility/chrome_content_utility_ipc_whitelist.h
diff --git a/chrome/utility/chrome_content_utility_ipc_whitelist.h b/chrome/utility/chrome_content_utility_ipc_whitelist.h
index fcbd36c17bbbb6cfc87f880fefd1585248f30dbb..1e6ea6a47801d3b106108f9b755876b6089f0c39 100644
--- a/chrome/utility/chrome_content_utility_ipc_whitelist.h
+++ b/chrome/utility/chrome_content_utility_ipc_whitelist.h
@@ -7,8 +7,6 @@
 
 #include "base/basictypes.h"
 
-namespace chrome {
-
 // This array contains the list of IPC messages that the utility process will
 // accept when running with elevated privileges.  When new messages need to run
 // with elevated privileges, add them here and be sure to add a security
@@ -16,6 +14,4 @@ namespace chrome {
 extern const uint32 kMessageWhitelist[];
 extern const size_t kMessageWhitelistSize;
 
-}  // namespace chrome
-
 #endif  // CHROME_UTILITY_CHROME_CONTENT_UTILITY_IPC_WHITELIST_H_