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// Copyright (c) 2011 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.
#ifndef CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
#define CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
#pragma once
#include "base/basictypes.h"
#include "base/gtest_prod_util.h"
#include "base/metrics/field_trial.h"
#include "base/tracked_objects.h"
#include "chrome/browser/first_run/first_run.h"
#include "chrome/browser/process_singleton.h"
#include "content/browser/browser_main.h"
class BrowserProcessImpl;
class FieldTrialSynchronizer;
class HistogramSynchronizer;
class MetricsService;
class PrefService;
class Profile;
class ShutdownWatcherHelper;
class TranslateManager;
namespace chrome_browser {
// For use by ShowMissingLocaleMessageBox.
extern const char kMissingLocaleDataTitle[];
extern const char kMissingLocaleDataMessage[];
}
class ChromeBrowserMainParts : public content::BrowserMainParts {
public:
virtual ~ChromeBrowserMainParts();
// Constructs metrics service and does related initialization, including
// creation of field trials. Call only after labs have been converted to
// switches.
MetricsService* SetupMetricsAndFieldTrials(
const CommandLine& parsed_command_line,
PrefService* local_state);
protected:
explicit ChromeBrowserMainParts(const MainFunctionParams& parameters);
virtual void PostMainMessageLoopStart() OVERRIDE;
virtual void PreMainMessageLoopRun() OVERRIDE;
int PreMainMessageLoopRunInternal();
virtual void MainMessageLoopRun() OVERRIDE;
virtual void PostMainMessageLoopRun() OVERRIDE;
virtual void ToolkitInitialized() OVERRIDE;
private:
// Methods for |EarlyInitialization()| ---------------------------------------
// A/B test for the maximum number of persistent connections per host.
void ConnectionFieldTrial();
// A/B test for determining a value for unused socket timeout.
void SocketTimeoutFieldTrial();
// A/B test for the maximum number of connections per proxy server.
void ProxyConnectionsFieldTrial();
// A/B test for spdy when --use-spdy not set.
void SpdyFieldTrial();
// A/B test for warmest socket vs. most recently used socket.
void WarmConnectionFieldTrial();
// A/B test for automatically establishing a backup TCP connection when a
// specified timeout value is reached.
void ConnectBackupJobsFieldTrial();
// A/B test for using a different host prefix in Google search suggest.
void SuggestPrefixFieldTrial();
// Field trial to see what disabling DNS pre-resolution does to
// latency of page loads.
void PredictorFieldTrial();
// Methods for |SetupMetricsAndFieldTrials()| --------------------------------
static MetricsService* InitializeMetrics(
const CommandLine& parsed_command_line,
const PrefService* local_state);
// Add an invocation of your field trial init function to this method.
void SetupFieldTrials(bool metrics_recording_enabled,
bool proxy_policy_is_set);
// Members initialized on construction ---------------------------------------
// Create ShutdownWatcherHelper object for watching jank during shutdown.
// Please keep |shutdown_watcher| as the first object constructed, and hence
// it is destroyed last.
scoped_ptr<ShutdownWatcherHelper> shutdown_watcher_;
#if defined(TRACK_ALL_TASK_OBJECTS)
// Creating this object starts tracking the creation and deletion of Task
// instance. This MUST be done before main_message_loop, so that it is
// destroyed after the main_message_loop.
tracked_objects::AutoTracking tracking_objects_;
#endif
// Statistical testing infrastructure for the entire browser. NULL until
// SetupMetricsAndFieldTrials is called.
scoped_ptr<base::FieldTrialList> field_trial_list_;
// Members initialized after / released before main_message_loop_ ------------
scoped_ptr<BrowserProcessImpl> browser_process_;
scoped_refptr<HistogramSynchronizer> histogram_synchronizer_;
scoped_ptr<ProcessSingleton> process_singleton_;
scoped_ptr<FirstRun::MasterPrefs> master_prefs_;
bool record_search_engine_;
TranslateManager* translate_manager_;
Profile* profile_;
bool run_message_loop_;
ProcessSingleton::NotifyResult notify_result_;
// Initialized in SetupMetricsAndFieldTrials.
scoped_refptr<FieldTrialSynchronizer> field_trial_synchronizer_;
FRIEND_TEST(BrowserMainTest, WarmConnectionFieldTrial_WarmestSocket);
FRIEND_TEST(BrowserMainTest, WarmConnectionFieldTrial_Random);
FRIEND_TEST(BrowserMainTest, WarmConnectionFieldTrial_Invalid);
DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainParts);
};
// Records the conditions that can prevent Breakpad from generating and
// sending crash reports. The presence of a Breakpad handler (after
// attempting to initialize crash reporting) and the presence of a debugger
// are registered with the UMA metrics service.
void RecordBreakpadStatusUMA(MetricsService* metrics);
// Displays a warning message if some minimum level of OS support is not
// present on the current platform.
void WarnAboutMinimumSystemRequirements();
// Displays a warning message that we can't find any locale data files.
void ShowMissingLocaleMessageBox();
// Records the time from our process' startup to the present time in
// the UMA histogram |metric_name|.
void RecordBrowserStartupTime();
// Records a time value to an UMA histogram in the context of the
// PreReadExperiment field-trial. This also reports to the appropriate
// sub-histogram (_PreRead(Enabled|Disabled)).
void RecordPreReadExperimentTime(const char* name, base::TimeDelta time);
#endif // CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
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