blob: a1e253e03764f4dd14f4a2e029871b6003a84ad8 [file] [log] [blame]
// 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.
#ifndef CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
#define CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
#include <memory>
#include <vector>
#include "base/macros.h"
#include "build/build_config.h"
#include "chrome/browser/chrome_browser_field_trials.h"
#include "chrome/browser/chrome_process_singleton.h"
#include "chrome/browser/first_run/first_run.h"
#include "chrome/browser/process_singleton.h"
#include "chrome/browser/ui/startup/startup_browser_creator.h"
#include "chrome/common/thread_profiler.h"
#include "content/public/browser/browser_main_parts.h"
#include "content/public/common/main_function_params.h"
class BrowserProcessImpl;
class ChromeBrowserMainExtraParts;
class FieldTrialSynchronizer;
class PrefService;
class Profile;
class StartupBrowserCreator;
class StartupTimeBomb;
class ShutdownWatcherHelper;
class WebUsbDetector;
namespace base {
class SequencedTaskRunner;
}
namespace chrome_browser {
// For use by ShowMissingLocaleMessageBox.
#if defined(OS_WIN)
extern const char kMissingLocaleDataTitle[];
#endif
#if defined(OS_WIN)
extern const char kMissingLocaleDataMessage[];
#endif
}
class ChromeBrowserMainParts : public content::BrowserMainParts {
public:
~ChromeBrowserMainParts() override;
// Add additional ChromeBrowserMainExtraParts.
virtual void AddParts(ChromeBrowserMainExtraParts* parts);
protected:
#if !defined(OS_ANDROID)
class DeferringTaskRunner;
#endif
explicit ChromeBrowserMainParts(
const content::MainFunctionParams& parameters);
// content::BrowserMainParts overrides.
bool ShouldContentCreateFeatureList() override;
// These are called in-order by content::BrowserMainLoop.
// Each stage calls the same stages in any ChromeBrowserMainExtraParts added
// with AddParts() from ChromeContentBrowserClient::CreateBrowserMainParts.
int PreEarlyInitialization() override;
void PostEarlyInitialization() override;
void ToolkitInitialized() override;
void PreMainMessageLoopStart() override;
void PostMainMessageLoopStart() override;
int PreCreateThreads() override;
void PostCreateThreads() override;
void ServiceManagerConnectionStarted(
content::ServiceManagerConnection* connection) override;
void PreMainMessageLoopRun() override;
bool MainMessageLoopRun(int* result_code) override;
void PostMainMessageLoopRun() override;
void PreShutdown() override;
void PostDestroyThreads() override;
// Additional stages for ChromeBrowserMainExtraParts. These stages are called
// in order from PreMainMessageLoopRun(). See implementation for details.
virtual void PreProfileInit();
virtual void PostProfileInit();
virtual void PreBrowserStart();
virtual void PostBrowserStart();
// Displays a warning message that we can't find any locale data files.
virtual void ShowMissingLocaleMessageBox() = 0;
const content::MainFunctionParams& parameters() const {
return parameters_;
}
const base::CommandLine& parsed_command_line() const {
return parsed_command_line_;
}
const base::FilePath& user_data_dir() const {
return user_data_dir_;
}
Profile* profile() { return profile_; }
private:
friend class ChromeBrowserMainPartsTestApi;
// Sets up the field trials and related initialization. Call only after
// about:flags have been converted to switches.
void SetupFieldTrials();
// Constructs the metrics service and initializes metrics recording.
void SetupMetrics();
// Starts recording of metrics. This can only be called after we have a file
// thread.
void StartMetricsRecording();
// Record time from process startup to present time in an UMA histogram.
void RecordBrowserStartupTime();
// Reads origin trial policy data from local state and configures command line
// for child processes.
void SetupOriginTrialsCommandLine(PrefService* local_state);
// Calling during PreEarlyInitialization() to load local state. Return value
// is an exit status, RESULT_CODE_NORMAL_EXIT indicates success.
// If the return value is RESULT_CODE_MISSING_DATA, then
// |failed_to_load_resource_bundle| indicates if the ResourceBundle couldn't
// be loaded.
int LoadLocalState(base::SequencedTaskRunner* local_state_task_runner,
bool* failed_to_load_resource_bundle);
// Applies any preferences (to local state) needed for first run. This is
// always called and early outs if not first-run. Return value is an exit
// status, RESULT_CODE_NORMAL_EXIT indicates success.
int ApplyFirstRunPrefs();
// Methods for Main Message Loop -------------------------------------------
int PreCreateThreadsImpl();
int PreMainMessageLoopRunImpl();
// Members initialized on construction ---------------------------------------
const content::MainFunctionParams parameters_;
// TODO(sky): remove this. This class (and related calls), may mutate the
// CommandLine, so it is misleading keeping a const ref here.
const base::CommandLine& parsed_command_line_;
int result_code_;
// Create StartupTimeBomb object for watching jank during startup.
std::unique_ptr<StartupTimeBomb> startup_watcher_;
// Create ShutdownWatcherHelper object for watching jank during shutdown.
// Please keep |shutdown_watcher| as the first object constructed, and hence
// it is destroyed last.
std::unique_ptr<ShutdownWatcherHelper> shutdown_watcher_;
ChromeBrowserFieldTrials browser_field_trials_;
#if !defined(OS_ANDROID)
std::unique_ptr<WebUsbDetector> web_usb_detector_;
#endif
// Vector of additional ChromeBrowserMainExtraParts.
// Parts are deleted in the inverse order they are added.
std::vector<ChromeBrowserMainExtraParts*> chrome_extra_parts_;
// A profiler that periodically samples stack traces on the UI thread.
std::unique_ptr<ThreadProfiler> ui_thread_profiler_;
// Whether PerformPreMainMessageLoopStartup() is called on VariationsService.
// Initialized to true if |MainFunctionParams::ui_task| is null (meaning not
// running browser_tests), but may be forced to true for tests.
bool should_call_pre_main_loop_start_startup_on_variations_service_;
// Members initialized after / released before main_message_loop_ ------------
std::unique_ptr<BrowserProcessImpl> browser_process_;
#if !defined(OS_ANDROID)
// Browser creation happens on the Java side in Android.
std::unique_ptr<StartupBrowserCreator> browser_creator_;
// Android doesn't support multiple browser processes, so it doesn't implement
// ProcessSingleton.
std::unique_ptr<ChromeProcessSingleton> process_singleton_;
// Android's first run is done in Java instead of native.
std::unique_ptr<first_run::MasterPrefs> master_prefs_;
ProcessSingleton::NotifyResult notify_result_ =
ProcessSingleton::PROCESS_NONE;
// Members needed across shutdown methods.
bool restart_last_session_ = false;
#endif
Profile* profile_;
bool run_message_loop_;
// Initialized in |SetupFieldTrials()|.
scoped_refptr<FieldTrialSynchronizer> field_trial_synchronizer_;
base::FilePath user_data_dir_;
#if !defined(OS_ANDROID)
// This TaskRunner is created and the constructor and destroyed in
// PreCreateThreadsImpl(). It's used to queue any tasks scheduled before the
// real task scheduler has been created.
scoped_refptr<DeferringTaskRunner> initial_task_runner_;
#endif
DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainParts);
};
#endif // CHROME_BROWSER_CHROME_BROWSER_MAIN_H_