[Extensions][TaskScheduler] Update ActivityLog for scheduling migration

chrome/browser/extensions/activity_log/activity_database.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/extensions/activity_log/activity_database.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
-#include "base/threading/thread.h"
-#include "base/threading/thread_checker.h"
 #include "base/time/clock.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
+#include "chrome/browser/extensions/activity_log/activity_log_task_runner.h"
 #include "chrome/browser/extensions/activity_log/fullstream_ui_policy.h"
 #include "chrome/common/chrome_switches.h"
 #include "sql/error_delegate_util.h"
 #include "sql/init_status.h"
 #include "sql/transaction.h"
 #include "third_party/sqlite/sqlite3.h"
 
 #if defined(OS_MACOSX)
 #include "base/mac/mac_util.h"
 #endif
 
-using content::BrowserThread;
-
 namespace extensions {
 
 // A size threshold at which data should be flushed to the database.  The
 // ActivityDatabase will signal the Delegate to write out data based on a
 // periodic timer, but will also initiate a flush if AdviseFlush indicates that
 // more than kSizeThresholdForFlush action records are queued in memory.  This
 // should be set large enough that write costs can be amortized across many
 // records, but not so large that too much space can be tied up holding records
 // in memory.
 static const int kSizeThresholdForFlush = 200;
 
 ActivityDatabase::ActivityDatabase(ActivityDatabase::Delegate* delegate)
     : delegate_(delegate),
       valid_db_(false),
       batch_mode_(true),
       already_closed_(false),
       did_init_(false) {
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableExtensionActivityLogTesting)) {
     batching_period_ = base::TimeDelta::FromSeconds(10);
   } else {
     batching_period_ = base::TimeDelta::FromMinutes(2);
   }
 }
 
 ActivityDatabase::~ActivityDatabase() {}
 
 void ActivityDatabase::Init(const base::FilePath& db_name) {
-  if (did_init_) return;
+  if (did_init_)
+    return;
   did_init_ = true;
-  if (BrowserThread::IsMessageLoopValid(BrowserThread::DB))
-    DCHECK_CURRENTLY_ON(BrowserThread::DB);
+  DCHECK(GetActivityLogTaskRunner()->RunsTasksInCurrentSequence());
   db_.set_histogram_tag("Activity");
   db_.set_error_callback(
       base::Bind(&ActivityDatabase::DatabaseErrorCallback,
                  base::Unretained(this)));
   db_.set_page_size(4096);
   db_.set_cache_size(32);
 
   // This db does not use [meta] table, store mmap status data elsewhere.
   db_.set_mmap_alt_status();
 
@@ skipping 60 matching lines @@
                  this,
                  &ActivityDatabase::RecordBatchedActions);
   } else if (!batch_mode && batch_mode_) {
     timer_.Stop();
     RecordBatchedActions();
   }
   batch_mode_ = batch_mode;
 }
 
 sql::Connection* ActivityDatabase::GetSqlConnection() {
-  if (BrowserThread::IsMessageLoopValid(BrowserThread::DB))
-    DCHECK_CURRENTLY_ON(BrowserThread::DB);
+  DCHECK(GetActivityLogTaskRunner()->RunsTasksInCurrentSequence());
   if (valid_db_) {
     return &db_;
   } else {
-    LOG(WARNING) << "Activity log database is not valid";
     return NULL;
   }
 }
 
 void ActivityDatabase::Close() {
   timer_.Stop();
   if (!already_closed_) {
     RecordBatchedActions();
     db_.reset_error_callback();
   }
@@ skipping 75 matching lines @@
              field_types[i]);
         if (!db->Execute(table_updater.c_str()))
           return false;
       }
     }
   }
   return true;
 }
 
 }  // namespace extensions