Push API: Add temporary debug log to track down crash

chrome/browser/services/gcm/gcm_profile_service.cc

 // Copyright (c) 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 "chrome/browser/services/gcm/gcm_profile_service.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
@@ skipping 124 matching lines @@
 void GCMProfileService::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterBooleanPref(
       prefs::kGCMChannelEnabled,
       true,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   PushMessagingServiceImpl::RegisterProfilePrefs(registry);
 }
 
 #if defined(OS_ANDROID)
+static GCMProfileService* debug_instance = nullptr;
+
 GCMProfileService::GCMProfileService(Profile* profile)
     : profile_(profile),
       push_messaging_service_(this, profile) {
-  DCHECK(!profile->IsOffTheRecord());
+  CHECK(!profile->IsOffTheRecord());
+
+  // TODO(johnme): Remove debug_instance and this logging code once
+  // crbug.com/437827 is fixed.
+  if (debug_instance != nullptr) {
+    LOG(FATAL) << "An instance of GCMProfileService already exists!"
+               << " Old profile: " << debug_instance->profile_ << " "
+               << debug_instance->profile_->GetDebugName() << " "
+               << debug_instance->profile_->GetProfileType() << " "
+               << debug_instance->profile_->IsSupervised() << " "
+               << debug_instance->profile_->IsNewProfile() << " "
+               << debug_instance->profile_->GetStartTime().ToInternalValue()
+               << ", new profile: " << profile << " "
+               << profile->GetDebugName() << " "
+               << profile->GetProfileType() << " "
+               << profile->IsSupervised() << " "
+               << profile->IsNewProfile() << " "
+               << profile->GetStartTime().ToInternalValue();
+  }
+  debug_instance = this;
 
   driver_.reset(new GCMDriverAndroid);
 }
 #else
 GCMProfileService::GCMProfileService(
     Profile* profile,
     scoped_ptr<GCMClientFactory> gcm_client_factory)
     : profile_(profile),
       push_messaging_service_(this, profile) {
   DCHECK(!profile->IsOffTheRecord());
 
   driver_ = CreateGCMDriverDesktop(
       gcm_client_factory.Pass(),
       profile_->GetPrefs(),
       profile_->GetPath().Append(chrome::kGCMStoreDirname),
       profile_->GetRequestContext());
 
   identity_observer_.reset(new IdentityObserver(profile, driver_.get()));
 }
 #endif  // defined(OS_ANDROID)
 
 GCMProfileService::GCMProfileService()
     : profile_(NULL),
       push_messaging_service_(this, NULL) {
 }
 
 GCMProfileService::~GCMProfileService() {
+#if defined(OS_ANDROID)
+  debug_instance = nullptr;
+#endif
 }
 
 void GCMProfileService::Shutdown() {
 #if !defined(OS_ANDROID)
   identity_observer_.reset();
 #endif  // !defined(OS_ANDROID)
   if (driver_) {
     driver_->Shutdown();
     driver_.reset();
   }
@@ skipping 10 matching lines @@
 
 void GCMProfileService::SetDriverForTesting(GCMDriver* driver) {
   driver_.reset(driver);
 #if !defined(OS_ANDROID)
   if (identity_observer_)
     identity_observer_.reset(new IdentityObserver(profile_, driver));
 #endif  // !defined(OS_ANDROID)
 }
 
 }  // namespace gcm