Migrate HostZoomMap to live in StoragePartition.

chrome/browser/profiles/off_the_record_profile_impl.h

Index: chrome/browser/profiles/off_the_record_profile_impl.h
diff --git a/chrome/browser/profiles/off_the_record_profile_impl.h b/chrome/browser/profiles/off_the_record_profile_impl.h
index 53e0621e2864432bf8407dc3eabb60a203b0539c..25fa2ec29bd2e7ea566121e8aeaa31d37feb29cb 100644
--- a/chrome/browser/profiles/off_the_record_profile_impl.h
+++ b/chrome/browser/profiles/off_the_record_profile_impl.h
@@ -84,6 +84,8 @@ class OffTheRecordProfileImpl : public Profile {
 
   // content::BrowserContext implementation:
   base::FilePath GetPath() const override;
+  scoped_ptr<content::ZoomLevelDelegate> CreateZoomLevelDelegate(
+      const base::FilePath& partition_path) override;
   scoped_refptr<base::SequencedTaskRunner> GetIOTaskRunner() override;
   bool IsOffTheRecord() const override;
   content::DownloadManagerDelegate* GetDownloadManagerDelegate() override;
@@ -103,16 +105,18 @@ class OffTheRecordProfileImpl : public Profile {
   content::SSLHostStateDelegate* GetSSLHostStateDelegate() override;
 
  private:
-  FRIEND_TEST_ALL_PREFIXES(OffTheRecordProfileImplTest, GetHostZoomMap);
   void InitIoData();
-  void InitHostZoomMap();
+  // Allows a profile to track changes in zoom levels in its parent profile.

[Bernhard Bauer, 2014/11/12 10:39:20]

Nit: Blank lines before comments?

[wjmaclean, 2014/11/12 15:12:55]

Done.

+  void TrackZoomLevelsFromParent();
 
 #if defined(OS_ANDROID) || defined(OS_IOS)
   void UseSystemProxy();
 #endif  // defined(OS_ANDROID) || defined(OS_IOS)
 
-  void OnZoomLevelChanged(const content::HostZoomMap::ZoomLevelChange& change);
   PrefProxyConfigTracker* CreateProxyConfigTracker();
+  // Callback function for tracking parent's zoom level changes.
+  void OnParentZoomLevelChanged(
+      const content::HostZoomMap::ZoomLevelChange& change);
 
   // The real underlying profile.
   Profile* profile_;
@@ -120,6 +124,7 @@ class OffTheRecordProfileImpl : public Profile {
   // Weak pointer owned by |profile_|.
   PrefServiceSyncable* prefs_;
 
+  scoped_ptr<content::HostZoomMap::Subscription> track_zoom_subscription_;
   scoped_ptr<OffTheRecordProfileIOData::Handle> io_data_;
 
   // We use a non-persistent content settings map for OTR.
@@ -132,8 +137,6 @@ class OffTheRecordProfileImpl : public Profile {
 
   scoped_ptr<PrefProxyConfigTracker> pref_proxy_config_tracker_;
 
-  scoped_ptr<content::HostZoomMap::Subscription> zoom_subscription_;
-
   DISALLOW_COPY_AND_ASSIGN(OffTheRecordProfileImpl);
 };