Migrate HostZoomMap to live in StoragePartition.

chrome/browser/profiles/profile.h

Index: chrome/browser/profiles/profile.h
diff --git a/chrome/browser/profiles/profile.h b/chrome/browser/profiles/profile.h
index dd744923a9e5f0a14e6486df58f558a56907a771..d66cc976d1f063f2dd16ceb05606dfff7af0cce6 100644
--- a/chrome/browser/profiles/profile.h
+++ b/chrome/browser/profiles/profile.h
@@ -395,6 +395,10 @@ class Profile : public content::BrowserContext {
   // Creates an OffTheRecordProfile which points to this Profile.
   Profile* CreateOffTheRecordProfile();
 
+  // Convenience method to retrieve the default zoom level for the default
+  // storage partition.
+  double GetDefaultZoomLevel();

[Charlie Reis, 2014/11/04 23:43:16]

Default has two meanings here, and I worry that will lead to this being called
incorrectly.  Getting the default zoom level sounds like default among the sites
in your zoom map, but this also means from the default StoragePartition.  What
if code associated with an app or <webview> caused this to be called?

[wjmaclean, 2014/11/05 21:55:42]

How about we rename it to GetDefaultZoomLevelForProfile() ?

[Charlie Reis, 2014/11/11 05:29:21]

Acknowledged.

+
  private:
   bool restored_last_session_;