Move base/mac_util.h to base/mac and use the base::mac namespace....

chrome/browser/ui/cocoa/about_window_controller.mm

Index: chrome/browser/ui/cocoa/about_window_controller.mm
===================================================================
--- chrome/browser/ui/cocoa/about_window_controller.mm	(revision 70358)
+++ chrome/browser/ui/cocoa/about_window_controller.mm	(working copy)
@@ -8,7 +8,7 @@
 #include "app/l10n_util_mac.h"
 #include "app/resource_bundle.h"
 #include "base/logging.h"
-#include "base/mac_util.h"
+#include "base/mac/mac_util.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
@@ -100,7 +100,7 @@
 @implementation AboutWindowController
 
 - (id)initWithProfile:(Profile*)profile {
-  NSString* nibPath = [mac_util::MainAppBundle() pathForResource:@"About"
+  NSString* nibPath = [base::mac::MainAppBundle() pathForResource:@"About"
                                                           ofType:@"nib"];
   if ((self = [super initWithWindowNibPath:nibPath owner:self])) {
     profile_ = profile;
@@ -128,7 +128,7 @@
 static BOOL recentShownUserActionFailedStatus = NO;
 
 - (void)awakeFromNib {
-  NSBundle* bundle = mac_util::MainAppBundle();
+  NSBundle* bundle = base::mac::MainAppBundle();
   NSString* chromeVersion =
       [bundle objectForInfoDictionaryKey:@"CFBundleShortVersionString"];