Read CrOS install attributes cache on startup.

chrome/browser/policy/enterprise_install_attributes.h

Index: chrome/browser/policy/enterprise_install_attributes.h
diff --git a/chrome/browser/policy/enterprise_install_attributes.h b/chrome/browser/policy/enterprise_install_attributes.h
index c1266eb3e03e9c785577b5d6b18210b88fc87c4a..38904daa79b47ca8c372838716e64d2946811f61 100644
--- a/chrome/browser/policy/enterprise_install_attributes.h
+++ b/chrome/browser/policy/enterprise_install_attributes.h
@@ -5,10 +5,12 @@
 #ifndef CHROME_BROWSER_POLICY_ENTERPRISE_INSTALL_ATTRIBUTES_H_
 #define CHROME_BROWSER_POLICY_ENTERPRISE_INSTALL_ATTRIBUTES_H_
 
+#include <map>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/file_path.h"
 #include "chrome/browser/policy/cloud_policy_constants.h"
 
 namespace chromeos {
@@ -29,8 +31,20 @@ class EnterpriseInstallAttributes {
     LOCK_WRONG_USER,
   };
 
+  // Standard cache file name.
+  static const FilePath::CharType kCacheFilePath[];
+
   explicit EnterpriseInstallAttributes(chromeos::CryptohomeLibrary* cryptohome);
 
+  // Reads data from the cache file. The cache file is used to work around slow
+  // cryptohome startup, which takes a while to register its DBus interface.
+  // See http://crosbug.com/37367 for background on this.
+  void ReadCacheFile(const FilePath& cache_file);
+
+  // Makes sure the local caches for enterprise-related install attributes are
+  // up-to-date with what cryptohome has.
+  void ReadImmutableAttributes();
+
   // Locks the device to be an enterprise device registered by the given user.
   // This can also be called after the lock has already been taken, in which
   // case it checks that the passed user agrees with the locked attribute.
@@ -59,9 +73,9 @@ class EnterpriseInstallAttributes {
   DeviceMode GetMode();
 
  private:
-  // Makes sure the local caches for enterprise-related install attributes are
-  // up-to-date with what cryptohome has.
-  void ReadImmutableAttributes();
+  // Decodes the install attributes provided in |attr_map|.
+  void DecodeInstallAttributes(
+      const std::map<std::string, std::string>& attr_map);
 
   chromeos::CryptohomeLibrary* cryptohome_;