Allow signin to continue even if sync is disabled by policy.

chrome/test/base/testing_profile.h

Index: chrome/test/base/testing_profile.h
diff --git a/chrome/test/base/testing_profile.h b/chrome/test/base/testing_profile.h
index 00c1ebb54c0c37247fb484f5d8236b9e43a16591..3161bfff139729270dc8885824f88d345d7100d9 100644
--- a/chrome/test/base/testing_profile.h
+++ b/chrome/test/base/testing_profile.h
@@ -84,6 +84,9 @@ class TestingProfile : public Profile {
     // Sets the PrefService to be used by this profile.
     void SetPrefService(scoped_ptr<PrefServiceSyncable> prefs);
 
+    // Sets the TestingProfile to be off-the-record by default.
+    void SetOffTheRecord();
+
     // Creates the TestingProfile using previously-set settings.
     scoped_ptr<TestingProfile> Build();
 
@@ -96,6 +99,7 @@ class TestingProfile : public Profile {
     scoped_refptr<ExtensionSpecialStoragePolicy> extension_policy_;
     FilePath path_;
     Delegate* delegate_;
+    bool off_the_record_;
 
     DISALLOW_COPY_AND_ASSIGN(Builder);
   };
@@ -118,7 +122,8 @@ class TestingProfile : public Profile {
   TestingProfile(const FilePath& path,
                  Delegate* delegate,
                  scoped_refptr<ExtensionSpecialStoragePolicy> extension_policy,
-                 scoped_ptr<PrefServiceSyncable> prefs);
+                 scoped_ptr<PrefServiceSyncable> prefs,
+                 bool off_the_record);
 
   virtual ~TestingProfile();