Migrate HostZoomMap to live in StoragePartition.

chrome/browser/profiles/profile.cc

Index: chrome/browser/profiles/profile.cc
diff --git a/chrome/browser/profiles/profile.cc b/chrome/browser/profiles/profile.cc
index f57decdc2f4ff8c68a4af47d201ae6629bd9ff3c..ebe8fbbb95bcb14546f481fa214613c5ba7f35d5 100644
--- a/chrome/browser/profiles/profile.cc
+++ b/chrome/browser/profiles/profile.cc
@@ -17,8 +17,10 @@
 #include "components/data_reduction_proxy/core/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/host_zoom_map.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"
 
@@ -267,3 +269,9 @@ bool ProfileCompare::operator()(Profile* a, Profile* b) const {
     return false;
   return a->GetOriginalProfile() < b->GetOriginalProfile();
 }
+
+double Profile::GetDefaultZoomLevelForProfile() {
+  return GetDefaultStoragePartition(this)
+      ->GetHostZoomMap()
+      ->GetDefaultZoomLevel();
+}