Implement a prototype to render cross-site iframes in a separate process from their parent.

chrome/browser/task_manager/task_manager_resource_providers.h

Index: chrome/browser/task_manager/task_manager_resource_providers.h
diff --git a/chrome/browser/task_manager/task_manager_resource_providers.h b/chrome/browser/task_manager/task_manager_resource_providers.h
index 81d9cdd8fb86fec3ec6134b5a3871b8b7660aac4..60d4f8b32ef9fadf00198f8324ef6c23f4d30f17 100644
--- a/chrome/browser/task_manager/task_manager_resource_providers.h
+++ b/chrome/browser/task_manager/task_manager_resource_providers.h
@@ -26,6 +26,7 @@ class Profile;
 namespace content {
 class RenderViewHost;
 class WebContents;
+class RenderProcessHost;
 }
 
 namespace extensions {
@@ -648,6 +649,8 @@ class TaskManagerGuestResourceProvider
  public:
   explicit TaskManagerGuestResourceProvider(TaskManager* task_manager);
 
+  bool IsOOPIframe(content::RenderProcessHost* host);
+
   // TaskManager::ResourceProvider methods:
   virtual TaskManager::Resource* GetResource(int origin_pid,
                                              int render_process_host_id,