Start implementing an auth flow for platform apps to be able to do auth

chrome/browser/extensions/api/identity/identity_apitest.cc

Index: chrome/browser/extensions/api/identity/identity_apitest.cc
===================================================================
--- chrome/browser/extensions/api/identity/identity_apitest.cc	(revision 137282)
+++ chrome/browser/extensions/api/identity/identity_apitest.cc	(working copy)
@@ -3,34 +3,57 @@
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/api/identity/identity_api.h"
+#include "chrome/browser/extensions/api/identity/web_auth_flow.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/common/net/gaia/google_service_auth_error.h"
 #include "chrome/common/net/gaia/oauth2_mint_token_flow.h"
 #include "chrome/common/chrome_switches.h"
+#include "googleurl/src/gurl.h"
 
 namespace {
 
 class IdentityInterceptor : public OAuth2MintTokenFlow::InterceptorForTests {
  public:
+  IdentityInterceptor() : called_(false) { }
+
   virtual bool DoIntercept(const OAuth2MintTokenFlow* flow,
                            std::string* access_token,
                            GoogleServiceAuthError* error) OVERRIDE {
     *access_token = "auth_token";
-    get_auth_token_called_ = true;
+    called_ = true;
     return true;
   }
 
-  bool get_auth_token_called() const { return get_auth_token_called_; }
+  bool called() const { return called_; }
 
  private:
-  bool get_auth_token_called_;
+  bool called_;
 };
 
+class WebAuthFlowInterceptor
+    : public extensions::WebAuthFlow::InterceptorForTests {
+ public:
+  WebAuthFlowInterceptor() : called_(false) { }
+
+  virtual GURL DoIntercept(const GURL& provider_url) OVERRIDE {
+    called_ = true;
+    return GURL("https://abcd.chromiumapp.org/cb#access_token=tok");
+  }
+
+  bool called() const { return called_; }
+
+ private:
+  bool called_;
+};
+
 }  // namespace
 
 IN_PROC_BROWSER_TEST_F(PlatformAppApiTest, Identity) {
-  IdentityInterceptor interceptor;
-  OAuth2MintTokenFlow::SetInterceptorForTests(&interceptor);
+  IdentityInterceptor id_interceptor;
+  OAuth2MintTokenFlow::SetInterceptorForTests(&id_interceptor);
+  WebAuthFlowInterceptor waf_interceptor;
+  extensions::WebAuthFlow::SetInterceptorForTests(&waf_interceptor);
   ASSERT_TRUE(RunExtensionTest("identity")) << message_;
-  ASSERT_TRUE(interceptor.get_auth_token_called());
+  ASSERT_TRUE(id_interceptor.called());
+  ASSERT_TRUE(waf_interceptor.called());
 };