Set OS X cache directory to ~/Library/Caches/[app name]/[profile name]

chrome/common/chrome_paths_mac.mm

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/common/chrome_paths_internal.h"
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/base_paths.h"
 #import "base/logging.h"
 #import "base/path_service.h"
 
 namespace chrome {
 
 bool GetDefaultUserDataDirectory(FilePath* result) {
   bool success = false;
-  NSArray* dirs =
-      NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory,
-                                          NSUserDomainMask, YES);
-  if ([dirs count] && result) {
-    NSString* base = [dirs objectAtIndex:0];
+  if (result && PathService::Get(base::DIR_APP_DATA, result)) {
 #if defined(GOOGLE_CHROME_BUILD)
-    base = [base stringByAppendingPathComponent:@"Google"];
-    NSString* tail = @"Chrome";
+    *result = result->Append("Google")->Append("Chrome");

[Mark Mentovai, 2009/09/16 19:33:27]

In a Mac build with GOOGLE_CHROME_BUILD defined:

.../chrome/common/chrome_paths_mac.mm: In function ‘bool
chrome::GetDefaultUserDataDirectory(FilePath*)’:
.../chrome/common/chrome_paths_mac.mm:19: error: base operand of ‘->’ has
non-pointer type ‘FilePath’

I'm changing this to:

    *result = result->Append("Google").Append("Chrome");

 #else
-    NSString* tail = @"Chromium";
+    *result = result->Append("Chromium");
 #endif
-    NSString* path = [base stringByAppendingPathComponent:tail];
-    *result = FilePath([path fileSystemRepresentation]);
     success = true;
   }
   return success;
 }
 
 bool GetUserDocumentsDirectory(FilePath* result) {
   bool success = false;
   NSArray* docArray =
       NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
                                           NSUserDomainMask,
@@ skipping 51 matching lines @@
       [components subarrayWithRange:NSMakeRange(0, [components count] - 3)];
 
   NSString* browser_path = [NSString pathWithComponents:components];
   DCHECK([[browser_path pathExtension] isEqualToString:@"app"])
       << "we weren't within another app?";
 
   return FilePath([browser_path fileSystemRepresentation]);
 }
 
 }  // namespace chrome