Implement new willStartMainResourceRequest method of blink::WebApplicationCacheHost

This separates the frame-walking code from the appcache-setup code, allowing
the next Blink patch in this sequence to handle frame-walking on the Blink side.

BUG=343272
TBR=kinuko@chromium.org

Review URL: https://codereview.chromium.org/161573002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251187 0039d316-1c4b-4281-b951-d872f2087c98

content/child/appcache/web_application_cache_host_impl.cc

@@ -162,6 +162,21 @@ void WebApplicationCacheHostImpl::OnErrorEventRaised(
 
 void WebApplicationCacheHostImpl::willStartMainResourceRequest(
     WebURLRequest& request, const WebFrame* frame) {
+  WebApplicationCacheHostImpl* spawning_host = NULL;
+  if (frame) {
+    const WebFrame* spawning_frame = frame->parent();
+    if (!spawning_frame)
+      spawning_frame = frame->opener();
+    if (!spawning_frame)
+      spawning_frame = frame;
+
+    spawning_host = FromFrame(spawning_frame);
+  }
+  willStartMainResourceRequest(request, spawning_host);
+}
+
+void WebApplicationCacheHostImpl::willStartMainResourceRequest(
+    WebURLRequest& request, const WebApplicationCacheHost* spawning_host) {
   request.setAppCacheHostID(host_id_);
 
   original_main_resource_url_ = ClearUrlRef(request.url());
@@ -170,18 +185,11 @@ void WebApplicationCacheHostImpl::willStartMainResourceRequest(
   is_get_method_ = (method == appcache::kHttpGETMethod);
   DCHECK(method == StringToUpperASCII(method));
 
-  if (frame) {
-    const WebFrame* spawning_frame = frame->parent();
-    if (!spawning_frame)
-      spawning_frame = frame->opener();
-    if (!spawning_frame)
-      spawning_frame = frame;
-
-    WebApplicationCacheHostImpl* spawning_host = FromFrame(spawning_frame);
-    if (spawning_host && (spawning_host != this) &&
-        (spawning_host->status_ != appcache::UNCACHED)) {
-      backend_->SetSpawningHostId(host_id_, spawning_host->host_id());
-    }
+  const WebApplicationCacheHostImpl* spawning_host_impl =
+      static_cast<const WebApplicationCacheHostImpl*>(spawning_host);
+  if (spawning_host_impl && (spawning_host_impl != this) &&
+      (spawning_host_impl->status_ != appcache::UNCACHED)) {
+    backend_->SetSpawningHostId(host_id_, spawning_host_impl->host_id());
   }
 }
 

content/child/appcache/web_application_cache_host_impl.h

@@ -48,6 +48,8 @@ class WebApplicationCacheHostImpl
   // blink::WebApplicationCacheHost:
   virtual void willStartMainResourceRequest(blink::WebURLRequest&,
                                             const blink::WebFrame*);
+  virtual void willStartMainResourceRequest(
+      blink::WebURLRequest&, const blink::WebApplicationCacheHost*);
   virtual void willStartSubResourceRequest(blink::WebURLRequest&);
   virtual void selectCacheWithoutManifest();
   virtual bool selectCacheWithManifest(const blink::WebURL& manifestURL);

content/worker/worker_webapplicationcachehost_impl.cc

@@ -19,6 +19,10 @@ void WorkerWebApplicationCacheHostImpl::willStartMainResourceRequest(
     blink::WebURLRequest&, const blink::WebFrame*) {
 }
 
+void WorkerWebApplicationCacheHostImpl::willStartMainResourceRequest(
+    blink::WebURLRequest&, const blink::WebApplicationCacheHost*) {
+}
+
 void WorkerWebApplicationCacheHostImpl::didReceiveResponseForMainResource(
     const blink::WebURLResponse&) {
 }

content/worker/worker_webapplicationcachehost_impl.h

@@ -19,6 +19,8 @@ class WorkerWebApplicationCacheHostImpl : public WebApplicationCacheHostImpl {
   // These overrides are stubbed out.
   virtual void willStartMainResourceRequest(
       blink::WebURLRequest&, const blink::WebFrame*);
+  virtual void willStartMainResourceRequest(
+      blink::WebURLRequest&, const blink::WebApplicationCacheHost*);
   virtual void didReceiveResponseForMainResource(
       const blink::WebURLResponse&);
   virtual void didReceiveDataForMainResource(const char* data, int len);