Migrate HostZoomMap to live in StoragePartition.

content/browser/plugin_process_host.cc

Index: content/browser/plugin_process_host.cc
diff --git a/content/browser/plugin_process_host.cc b/content/browser/plugin_process_host.cc
index dd969d3e6c78635d715bfc69db820e781550c981..88b42adc82d0e9e410e96d7999015580c3bcb30b 100644
--- a/content/browser/plugin_process_host.cc
+++ b/content/browser/plugin_process_host.cc
@@ -262,10 +262,11 @@ bool PluginProcessHost::Init(const WebPluginInfo& info) {
       base::Bind(&PluginProcessHost::GetContexts,
       base::Unretained(this)));
 
-  // TODO(jam): right now we're passing NULL for appcache, blob storage, and
-  // file system. If NPAPI plugins actually use this, we'll have to plumb them.
+  // TODO(jam): right now we're passing NULL for appcache, blob storage, file
+  // system and host zoom level context. If NPAPI plugins actually use this,
+  // we'll have to plumb them.
   ResourceMessageFilter* resource_message_filter = new ResourceMessageFilter(
-      process_->GetData().id, PROCESS_TYPE_PLUGIN, NULL, NULL, NULL, NULL,
+      process_->GetData().id, PROCESS_TYPE_PLUGIN, NULL, NULL, NULL, NULL, NULL,
       get_contexts_callback);
   process_->AddFilter(resource_message_filter);
   return true;