Simplify geolocation permission request in the Content API.

chrome/browser/geolocation/chrome_geolocation_permission_context_android.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/geolocation/chrome_geolocation_permission_context_android.h"
-
-#include "base/prefs/pref_service.h"
-#include "chrome/browser/android/google_location_settings_helper.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/common/pref_names.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/web_contents.h"
-
-ChromeGeolocationPermissionContextAndroid::
-PermissionRequestInfo::PermissionRequestInfo()
-    : id(0, 0, 0, GURL()),
-      user_gesture(false) {}
-
-ChromeGeolocationPermissionContextAndroid::
-    ChromeGeolocationPermissionContextAndroid(Profile* profile)
-    : ChromeGeolocationPermissionContext(profile),
-      google_location_settings_helper_(
-          GoogleLocationSettingsHelper::Create()) {
-}
-
-ChromeGeolocationPermissionContextAndroid::
-    ~ChromeGeolocationPermissionContextAndroid() {
-}
-
-void ChromeGeolocationPermissionContextAndroid::ProceedDecidePermission(
-    content::WebContents* web_contents,
-    const PermissionRequestInfo& info,
-    const std::string& accept_button_label,
-    base::Callback<void(bool)> callback) {
-  // Super class implementation expects everything in UI thread instead.
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
-  ChromeGeolocationPermissionContext::DecidePermission(
-      web_contents, info.id, info.requesting_frame, info.user_gesture,
-      info.embedder, accept_button_label, callback);
-}
-
-void ChromeGeolocationPermissionContextAndroid::CheckMasterLocation(
-    content::WebContents* web_contents,
-    const PermissionRequestInfo& info,
-    base::Callback<void(bool)> callback) {
-  // Check to see if the feature in its entirety has been disabled.
-  // This must happen before other services (e.g. tabs, extensions)
-  // get an opportunity to allow the geolocation request.
-  bool enabled =
-      google_location_settings_helper_->IsMasterLocationSettingEnabled();
-
-  // The flow for geolocation permission on android is:
-  // - ChromeGeolocationPermissionContextAndroid::DecidePermission
-  // intercepts the flow in the UI thread, and posts task
-  // to the blocking pool to CheckMasterLocation (in order to
-  // avoid strict-mode violation).
-  // - At this point the master location permission is either:
-  // -- enabled, in which we case it proceeds the normal flow
-  // via ChromeGeolocationPermissionContext (which may create infobars, etc.).
-  // -- disabled, in which case the permission is already decided.
-  //
-  // In either case, ChromeGeolocationPermissionContext expects these
-  // in the UI thread.
-  base::Closure ui_closure;
-  if (enabled) {
-    bool allow_label = google_location_settings_helper_->IsAllowLabel();
-    std::string accept_button_label =
-        google_location_settings_helper_->GetAcceptButtonLabel(allow_label);
-    ui_closure = base::Bind(
-        &ChromeGeolocationPermissionContextAndroid::ProceedDecidePermission,
-        this, web_contents, info, accept_button_label, callback);
-  } else {
-    ui_closure = base::Bind(
-        &ChromeGeolocationPermissionContextAndroid::PermissionDecided,
-        this, info.id, info.requesting_frame, info.embedder, callback, false);
-  }
-
-  // This method is executed from the BlockingPool, post the result
-  // back to the UI thread.
-  content::BrowserThread::PostTask(
-      content::BrowserThread::UI, FROM_HERE, ui_closure);
-}
-
-void ChromeGeolocationPermissionContextAndroid::DecidePermission(
-    content::WebContents* web_contents,
-    const PermissionRequestID& id,
-    const GURL& requesting_frame,
-    bool user_gesture,
-    const GURL& embedder,
-    const std::string& accept_button_label,
-    base::Callback<void(bool)> callback) {
-
-  PermissionRequestInfo info;
-  info.id = id;
-  info.requesting_frame = requesting_frame;
-  info.user_gesture = user_gesture;
-  info.embedder = embedder;
-
-  // Called on the UI thread. However, do the work on a separate thread
-  // to avoid strict mode violation.
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
-  content::BrowserThread::PostBlockingPoolTask(FROM_HERE,
-      base::Bind(
-          &ChromeGeolocationPermissionContextAndroid::CheckMasterLocation,
-          this, web_contents, info, callback));
-}
-
-void ChromeGeolocationPermissionContextAndroid::PermissionDecided(
-    const PermissionRequestID& id,
-    const GURL& requesting_frame,
-    const GURL& embedder,
-    base::Callback<void(bool)> callback,
-    bool allowed) {
-  // If Google Apps Location setting is turned off then we ignore
-  // the 'allow' website setting for this site and instead show
-  // the infobar to go back to the 'settings' to turn it back on.
-  if (allowed &&
-      !google_location_settings_helper_->IsGoogleAppsLocationSettingEnabled()) {
-    QueueController()->CreateInfoBarRequest(
-        id, requesting_frame, embedder, "", callback);
-    return;
-  }
-
-  ChromeGeolocationPermissionContext::PermissionDecided(
-      id, requesting_frame, embedder, callback, allowed);
-}