[iOS] Add a HasActiveStateManager method to BrowserState.

ios/web/browser_state.mm

 // Copyright 2013 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 "ios/web/public/browser_state.h"
 
 #include "base/location.h"
 #include "base/memory/ref_counted.h"
 #include "ios/web/active_state_manager_impl.h"
 #import "ios/web/browsing_data_partition_impl.h"
@@ skipping 16 matching lines @@
 // since reference counted objects can't be user data.
 struct CertificatePolicyCacheHandle : public base::SupportsUserData::Data {
   explicit CertificatePolicyCacheHandle(CertificatePolicyCache* cache)
       : policy_cache(cache) {}
 
   scoped_refptr<CertificatePolicyCache> policy_cache;
 };
 }
 
 // static
+bool BrowserState::HasActiveStateManager(BrowserState* browser_state) {

[shreyasv1, 2015/12/29 16:09:48]

OPTIONAL: Move this closer to |GetActiveStateManager|

[sdefresne, 2015/12/29 16:14:59]

Done.

+  DCHECK_CURRENTLY_ON_WEB_THREAD(WebThread::UI);
+  return browser_state->GetUserData(kCertificatePolicyCacheKeyName) != nullptr;

[shreyasv1, 2015/12/29 16:09:48]

Wrong key.

[sdefresne, 2015/12/29 16:14:59]

Oooops.

+}
+
+// static
 scoped_refptr<CertificatePolicyCache> BrowserState::GetCertificatePolicyCache(
     BrowserState* browser_state) {
   DCHECK_CURRENTLY_ON_WEB_THREAD(WebThread::UI);
   if (!browser_state->GetUserData(kCertificatePolicyCacheKeyName)) {
     CertificatePolicyCacheHandle* cert_cache_service_handle =
         new CertificatePolicyCacheHandle(new CertificatePolicyCache());
 
     browser_state->SetUserData(kCertificatePolicyCacheKeyName,
                                cert_cache_service_handle);
   }
@@ skipping 71 matching lines @@
 // static
 BrowserState* BrowserState::FromSupportsUserData(
     base::SupportsUserData* supports_user_data) {
   if (!supports_user_data ||
       !supports_user_data->GetUserData(kBrowserStateIdentifierKey)) {
     return nullptr;
   }
   return static_cast<BrowserState*>(supports_user_data);
 }
 }  // namespace web