Fake PO2TS GetRequestContext should return NULL.

chrome/browser/signin/fake_profile_oauth2_token_service.h

Index: chrome/browser/signin/fake_profile_oauth2_token_service.h
diff --git a/chrome/browser/signin/fake_profile_oauth2_token_service.h b/chrome/browser/signin/fake_profile_oauth2_token_service.h
index cc5cbc9a784936a9ca9744af3bb81b619a69e25d..93014785711ab62ae172505644463c319c4643fa 100644
--- a/chrome/browser/signin/fake_profile_oauth2_token_service.h
+++ b/chrome/browser/signin/fake_profile_oauth2_token_service.h
@@ -66,6 +66,9 @@ class FakeProfileOAuth2TokenService
   virtual bool RefreshTokenIsAvailable(
       const std::string& account_id) OVERRIDE;
 
+  // Overriden to make sure it works on iOS.
+  virtual void LoadCredentials(const std::string& primary_account_id) OVERRIDE;
+
   virtual std::vector<std::string> GetAccounts() OVERRIDE;
 
   // Overriden to make sure it works on Android.  Simply calls
@@ -135,6 +138,8 @@ class FakeProfileOAuth2TokenService
 
   virtual std::string GetRefreshToken(const std::string& account_id) OVERRIDE;
 
+  virtual net::URLRequestContextGetter* GetRequestContext() OVERRIDE;
+
  private:
   // Helper function to complete pending requests - if |all_scopes| is true,
   // then all pending requests are completed, otherwise, only those requests