PlzNavigate: AppCache support.

content/browser/frame_host/navigation_handle_impl.h

Index: content/browser/frame_host/navigation_handle_impl.h
diff --git a/content/browser/frame_host/navigation_handle_impl.h b/content/browser/frame_host/navigation_handle_impl.h
index c02844b80f469e4fffd04f4dabee9f9eb87d0584..8b239046a83530a94f9980ab1eae2ec3b02b594d 100644
--- a/content/browser/frame_host/navigation_handle_impl.h
+++ b/content/browser/frame_host/navigation_handle_impl.h
@@ -32,6 +32,8 @@ struct FrameHostMsg_DidCommitProvisionalLoad_Params;
 
 namespace content {
 
+class AppCacheNavigationHandle;
+class ChromeAppCacheService;
 class NavigationUIData;
 class NavigatorDelegate;
 class ResourceRequestBodyImpl;
@@ -198,6 +200,12 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
     return service_worker_handle_.get();
   }
 
+  // PlzNavigate
+  void InitAppCacheHandle(ChromeAppCacheService* appcache_service);
+  AppCacheNavigationHandle* appcache_handle() const {
+    return appcache_handle_.get();
+  }
+
   typedef base::Callback<void(NavigationThrottle::ThrottleCheckResult)>
       ThrottleChecksFinishedCallback;
 
@@ -430,6 +438,11 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
   GURL searchable_form_url_;
   std::string searchable_form_encoding_;
 
+  // PlzNavigate
+  // Manages the lifetime of a pre-created AppCacheHost until the renderer
+  // registers the host with the AppCache system.

[clamy, 2016/11/25 13:32:24]

Is it until the renderer registers the host or until we have a renderer for the
navigation browser-side and we call CommitNavigation?

[ananta, 2016/11/28 21:36:53]

Rephrased.

+  std::unique_ptr<AppCacheNavigationHandle> appcache_handle_;
+
   base::WeakPtrFactory<NavigationHandleImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationHandleImpl);