PlzNavigate: AppCache support.

content/browser/frame_host/navigation_handle_impl.cc

Index: content/browser/frame_host/navigation_handle_impl.cc
diff --git a/content/browser/frame_host/navigation_handle_impl.cc b/content/browser/frame_host/navigation_handle_impl.cc
index ae9e5dbe57a7670f7f2835d180ace81f6c679869..4baf2b6bb544f91e37b72e09183fb55fe444f390 100644
--- a/content/browser/frame_host/navigation_handle_impl.cc
+++ b/content/browser/frame_host/navigation_handle_impl.cc
@@ -6,6 +6,8 @@
 
 #include "base/debug/dump_without_crashing.h"
 #include "base/logging.h"
+#include "content/browser/appcache/appcache_navigation_handle.h"
+#include "content/browser/appcache/appcache_service_impl.h"
 #include "content/browser/browsing_data/clear_site_data_throttle.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/devtools/render_frame_devtools_agent_host.h"
@@ -413,6 +415,12 @@ void NavigationHandleImpl::InitServiceWorkerHandle(
       new ServiceWorkerNavigationHandle(service_worker_context));
 }
 
+void NavigationHandleImpl::InitAppCacheHandle(
+    ChromeAppCacheService* appcache_service) {
+  DCHECK(IsBrowserSideNavigationEnabled());
+  appcache_handle_.reset(new AppCacheNavigationHandle(appcache_service));
+}
+
 void NavigationHandleImpl::WillStartRequest(
     const std::string& method,
     scoped_refptr<content::ResourceRequestBodyImpl> resource_request_body,
@@ -531,6 +539,11 @@ void NavigationHandleImpl::ReadyToCommitNavigation(
   render_frame_host_ = render_frame_host;
   state_ = READY_TO_COMMIT;
 
+  if (appcache_handle_.get()) {

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

Note: at this point we have not committed the navigation yet, we just have a RFH
to use. It may still be showing the old page. Is that ok?

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

Yes. If the RFH is not going to change from this point on, then we are fine.

+    appcache_handle_->CommitNavigation(
+        render_frame_host->GetProcess()->GetID());
+  }
+
   if (!IsRendererDebugURL(url_))
     GetDelegate()->ReadyToCommitNavigation(this);
 }