Add PluginServiceFilter interface.

content/browser/content_browser_client.h

Index: content/browser/content_browser_client.h
diff --git a/content/browser/content_browser_client.h b/content/browser/content_browser_client.h
index fd5f4aac9a0294e8c36e036e00194653aa558fbd..4140dcb6af3e0f9a6e2f8206383d9f362e56ccef 100644
--- a/content/browser/content_browser_client.h
+++ b/content/browser/content_browser_client.h
@@ -20,6 +20,7 @@ class DevToolsManager;
 class FilePath;
 class GURL;
 class MHTMLGenerationManager;
+class PluginFilter;
 class PluginProcessHost;
 class QuotaPermissionContext;
 class RenderViewHost;
@@ -49,6 +50,12 @@ namespace ui {
 class Clipboard;
 }
 
+namespace webkit {
+namespace npapi {
+struct WebPluginInfo;
+}
+}
+
 namespace content {
 
 class BrowserContext;
@@ -148,6 +155,15 @@ class ContentBrowserClient {
   virtual bool AllowSaveLocalState(
       const content::ResourceContext& context) = 0;
 
+  // Creates a new PluginFilter.
+  // This is called on the IO thread.
+  virtual PluginFilter* CreatePluginFilter(
+      int render_process_id,
+      int render_view_id,
+      const content::ResourceContext& resource_context,
+      const GURL& url,
+      const GURL& policy_url) = 0;
+
   // Allows the embedder to override the request context based on the URL for
   // certain operations, like cookie access. Returns NULL to indicate the
   // regular request context should be used.