Migrate HostZoomMap to live in StoragePartition.

chrome/browser/profiles/profile.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/profiles/profile.h"
 
 #include <string>
 
 #include "base/prefs/pref_service.h"
 #include "build/build_config.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/first_run/first_run.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/common/pref_names.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_prefs.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/sync_driver/sync_prefs.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
+#include "content/public/browser/storage_partition.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui.h"
 
 #if defined(OS_CHROMEOS)
 #include "base/command_line.h"
 #include "chrome/common/chrome_switches.h"
 #include "chromeos/chromeos_switches.h"
 #endif
 
 #if defined(OS_ANDROID) && defined(FULL_SAFE_BROWSING)
 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
 #endif
 
 #if defined(ENABLE_EXTENSIONS)
 #include "extensions/browser/pref_names.h"
 #endif
 
+using content::HostZoomMap;
+
 Profile::Profile()
     : restored_last_session_(false),
       sent_destroyed_notification_(false),
       accessibility_pause_level_(0) {
 }
 
 Profile::~Profile() {
 }
 
 // static
@@ skipping 88 matching lines @@
 #if defined(ENABLE_EXTENSIONS)
   registry->RegisterBooleanPref(
       extensions::pref_names::kAlertsInitialized,
       false,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 #endif
   registry->RegisterStringPref(
       prefs::kSelectFileLastDirectory,
       std::string(),
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
-  registry->RegisterDoublePref(
-      prefs::kDefaultZoomLevel,
-      0.0,
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterDictionaryPref(
       prefs::kPerHostZoomLevels,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterStringPref(
       prefs::kDefaultApps,
       "install",
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterBooleanPref(
       prefs::kSpeechRecognitionFilterProfanities,
       true,
@@ skipping 90 matching lines @@
         content::NotificationService::NoDetails());
   }
 }
 
 bool ProfileCompare::operator()(Profile* a, Profile* b) const {
   DCHECK(a && b);
   if (a->IsSameProfile(b))
     return false;
   return a->GetOriginalProfile() < b->GetOriginalProfile();
 }
+
+double Profile::GetDefaultZoomLevel() {
+  return GetDefaultStoragePartition(this)
+      ->GetHostZoomMap()
+      ->GetDefaultZoomLevel();
+}
+
+PrefService* Profile::GetZoomLevelPrefs() {
+  return GetDefaultStoragePartition(this)->GetZoomLevelPrefs();
+}
+
+void Profile::TrackZoomLevelsFromParent(Profile* parent) {
+  // This function only makes sense in a derived class that implements
+  // HostZoomMaps.
+  DCHECK(GetProfileType() == INCOGNITO_PROFILE &&
+         parent->GetProfileType() == REGULAR_PROFILE);
+
+  // Here we only want to use zoom levels stored in the main-context's default
+  // storage partition. We're not interested in zoom levels in special
+  // partitions, e.g. those used by WebViewGuests.
+  HostZoomMap* host_zoom_map = HostZoomMap::GetDefaultForBrowserContext(this);
+  HostZoomMap* parent_host_zoom_map =
+      HostZoomMap::GetDefaultForBrowserContext(parent);
+  host_zoom_map->CopyFrom(parent_host_zoom_map);
+  // Observe parenti profile's HostZoomMap changes so they can also be applied

[awong, 2014/08/20 19:56:58]

parenti -> parent

[wjmaclean, 2014/08/20 20:15:45]

Done.

+  // to this profile's HostZoomMap.
+  track_zoom_subscription_ = parent_host_zoom_map->AddZoomLevelChangedCallback(
+      base::Bind(&Profile::TrackZoomLevelChanged, base::Unretained(this)));

[awong, 2014/08/20 19:56:58]

Should add a note in TrackZoomLevelChanged() that it must never be made virtual
without also moving the subscription down to the leaf nodes.

[wjmaclean, 2014/08/20 20:15:45]

I will add this in the next CL.

+}
+
+void Profile::TrackZoomLevelChanged(
+    const HostZoomMap::ZoomLevelChange& change) {
+  HostZoomMap* host_zoom_map = HostZoomMap::GetDefaultForBrowserContext(this);
+  switch (change.mode) {
+    case HostZoomMap::ZOOM_CHANGED_DEFAULT_ZOOM_LEVEL:
+    case HostZoomMap::ZOOM_CHANGED_TEMPORARY_ZOOM:
+       return;
+    case HostZoomMap::ZOOM_CHANGED_FOR_HOST:
+       host_zoom_map->SetZoomLevelForHost(change.host, change.zoom_level);
+       return;
+    case HostZoomMap::ZOOM_CHANGED_FOR_SCHEME_AND_HOST:
+       host_zoom_map->SetZoomLevelForHostAndScheme(change.scheme,
+           change.host,
+           change.zoom_level);
+       return;
+  }
+}