Fix for WebView accessible resources.

extensions/renderer/renderer_extension_registry.h

Index: extensions/renderer/renderer_extension_registry.h
diff --git a/extensions/renderer/renderer_extension_registry.h b/extensions/renderer/renderer_extension_registry.h
index 6a887a16d4f92e3be4c6ad98ed90ce6ea63ce206..4871ea4e1294dc8aaedffcc31ff79501d11cc4cd 100644
--- a/extensions/renderer/renderer_extension_registry.h
+++ b/extensions/renderer/renderer_extension_registry.h
@@ -32,6 +32,14 @@ class RendererExtensionRegistry {
   // TODO(annekao): remove or make thread-safe and callback-based.
   const ExtensionSet* GetMainThreadExtensionSet() const;
 
+  // This method is used to let RendererExtensionRegistry know which webview
+  // partition ID this render process is associated with, if any. This ID is
+  // used to find the correct entry in extension manifests for webview
+  // accessible resources.
+  void SetWebviewPartitionID(const std::string& partition_id);
+
+  std::string webview_partition_id() const { return webview_partition_id_; }
+
   size_t size() const;
   bool is_empty() const;
 
@@ -51,6 +59,8 @@ class RendererExtensionRegistry {
 
   mutable base::Lock lock_;
 
+  std::string webview_partition_id_;
+
   DISALLOW_COPY_AND_ASSIGN(RendererExtensionRegistry);
 };