Eliminate ProfileOAuth2TokenService being a BCKS.

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..14cc3cc8055bc9add52c9fdef8e69b09605810a1 100644
--- a/chrome/browser/signin/fake_profile_oauth2_token_service.h
+++ b/chrome/browser/signin/fake_profile_oauth2_token_service.h
@@ -17,10 +17,6 @@
 #include "chrome/browser/signin/profile_oauth2_token_service.h"
 #endif
 
-namespace content {
-class BrowserContext;
-}
-
 // Helper class to simplify writing unittests that depend on an instance of
 // ProfileOAuth2TokenService.
 //
@@ -108,17 +104,6 @@ class FakeProfileOAuth2TokenService
     auto_post_fetch_response_on_message_loop_ = auto_post_response;
   }
 
-  // Helper function to be used with
-  // BrowserContextKeyedService::SetTestingFactory().
-  static BrowserContextKeyedService* Build(content::BrowserContext* profile);
-
-  // Helper function to be used with
-  // BrowserContextKeyedService::SetTestingFactory() that creates a
-  // FakeProfileOAuth2TokenService object that posts fetch responses on the
-  // current message loop.
-  static BrowserContextKeyedService* BuildAutoIssuingTokenService(
-      content::BrowserContext* profile);
-
  protected:
   // OAuth2TokenService overrides.
   virtual void FetchOAuth2Token(RequestImpl* request,