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

base/base_paths_mac.mm

Index: base/base_paths_mac.mm
===================================================================
--- base/base_paths_mac.mm	(revision 26368)
+++ base/base_paths_mac.mm	(working copy)
@@ -15,6 +15,26 @@
 
 namespace base {
 
+namespace {
+
+// TODO(akalin): Export this function somewhere and use it in
+// chrome_paths_mac.mm and mac_util.mm.  This is tricky because
+// NSSearchPathDirectory is declared in an Objective C header so we
+// cannot put it in one of the usual locations (where pure C++ files
+// would include them).
+bool GetUserDirectory(NSSearchPathDirectory directory, FilePath* result) {
+  NSArray* dirs =
+      NSSearchPathForDirectoriesInDomains(directory, NSUserDomainMask, YES);
+  if ([dirs count] < 1) {
+    return false;
+  }
+  NSString* path = [dirs objectAtIndex:0];
+  *result = FilePath([path fileSystemRepresentation]);
+  return true;
+}
+
+}  // namespace
+
 bool PathProviderMac(int key, FilePath* result) {
   std::string cur;
   switch (key) {
@@ -27,6 +47,10 @@
       cur = [path fileSystemRepresentation];
       break;
     }
+    case base::DIR_CACHE:
+      return GetUserDirectory(NSCachesDirectory, result);
+    case base::DIR_APP_DATA:
+      return GetUserDirectory(NSApplicationSupportDirectory, result);
     case base::DIR_SOURCE_ROOT: {
       FilePath path;
       PathService::Get(base::DIR_EXE, &path);