Profiles: Really fix refcounted services.

chrome/browser/profiles/profile_keyed_service_factory.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/profiles/profile_keyed_service_factory.h"
 
 #include <map>
 
 #include "base/memory/singleton.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 
+void ProfileKeyedServiceFactory::SetTestingFactory(Profile* profile,
+                                                   FactoryFunction factory) {
+  // Destroying the profile may cause us to lose data about whether |profile|
+  // has our preferences registered on it (since the profile object itself
+  // isn't dead). See if we need to readd it once we've gone through normal
+  // destruction.
+  bool add_profile = ArePreferencesSetOn(profile);
+
+  // We have to go through the shutdown and destroy mechanisms because there
+  // are unit tests that create a service on a profile and then change the
+  // testing service mid-test.
+  ProfileShutdown(profile);
+  ProfileDestroyed(profile);
+
+  if (add_profile)
+    MarkPreferencesSetOn(profile);
+
+  factories_[profile] = factory;
+}
+
+ProfileKeyedService* ProfileKeyedServiceFactory::SetTestingFactoryAndUse(
+    Profile* profile,
+    FactoryFunction factory) {
+  DCHECK(factory);
+  SetTestingFactory(profile, factory);
+  return GetServiceForProfile(profile, true);
+}
+
 ProfileKeyedServiceFactory::ProfileKeyedServiceFactory(
     const char* name, ProfileDependencyManager* manager)
     : ProfileKeyedBaseFactory(name, manager) {
 }
 
 ProfileKeyedServiceFactory::~ProfileKeyedServiceFactory() {
   DCHECK(mapping_.empty());
 }
 
 ProfileKeyedService* ProfileKeyedServiceFactory::GetServiceForProfile(
     Profile* profile,
     bool create) {
-  return static_cast<ProfileKeyedService*>(GetBaseForProfile(profile, create));
+  profile = GetProfileToUse(profile);
+  if (!profile)
+    return NULL;
+
+  // NOTE: If you modify any of the logic below, make sure to update the
+  // refcounted version in refcounted_profile_keyed_service_factory.cc!
+  ProfileKeyedService* service = NULL;
+  std::map<Profile*, ProfileKeyedService*>::const_iterator it =
+      mapping_.find(profile);
+  if (it != mapping_.end()) {
+    return it->second;
+  } else if (create) {
+    // Object not found, and we must create it.
+    //
+    // Check to see if we have a per-Profile testing factory that we should use
+    // instead of default behavior.
+    std::map<Profile*, FactoryFunction>::iterator jt = factories_.find(profile);
+    if (jt != factories_.end()) {
+      if (jt->second) {
+        if (!profile->IsOffTheRecord())
+          RegisterUserPrefsOnProfile(profile);
+        service = jt->second(profile);
+      } else {
+        service = NULL;
+      }
+    } else {
+      service = BuildServiceInstanceFor(profile);
+    }
+  } else {
+    // Object not found, and we're forbidden from creating one.
+    return NULL;
+  }
+
+  Associate(profile, service);
+  return service;
 }
 
 void ProfileKeyedServiceFactory::Associate(Profile* profile,
-                                           ProfileKeyedBase* service) {
+                                           ProfileKeyedService* service) {
   DCHECK(mapping_.find(profile) == mapping_.end());
-  mapping_.insert(std::make_pair(
-      profile, static_cast<ProfileKeyedService*>(service)));
-}
-
-bool ProfileKeyedServiceFactory::GetAssociation(
-    Profile* profile,
-    ProfileKeyedBase** out) const {
-  bool found = false;
-  std::map<Profile*, ProfileKeyedService*>::const_iterator it =
-      mapping_.find(profile);
-  if (it != mapping_.end()) {
-    found = true;
-    if (out)
-      *out = it->second;
-  }
-  return found;
+  mapping_.insert(std::make_pair(profile, service));
 }
 
 void ProfileKeyedServiceFactory::ProfileShutdown(Profile* profile) {
   std::map<Profile*, ProfileKeyedService*>::iterator it =
       mapping_.find(profile);
   if (it != mapping_.end() && it->second)
     it->second->Shutdown();
 }
 
 void ProfileKeyedServiceFactory::ProfileDestroyed(Profile* profile) {
   std::map<Profile*, ProfileKeyedService*>::iterator it =
       mapping_.find(profile);
   if (it != mapping_.end()) {
     delete it->second;
     mapping_.erase(it);
   }
 
+  // For unit tests, we also remove the factory function both so we don't
+  // maintain a big map of dead pointers, but also since we may have a second
+  // object that lives at the same address (see other comments about unit tests
+  // in this file).
+  factories_.erase(profile);
+
   ProfileKeyedBaseFactory::ProfileDestroyed(profile);
 }
+
+void ProfileKeyedServiceFactory::SetEmptyTestingFactory(
+    Profile* profile) {
+  SetTestingFactory(profile, NULL);
+}
+
+void ProfileKeyedServiceFactory::CreateServiceNow(Profile* profile) {
+  GetServiceForProfile(profile, true);
+}