Remove call of PrerenderTracker::TryCancelOnIOThread in...

Remove call of PrerenderTracker::TryCancelOnIOThread in ChromeContentBrowserClient::CanCreateWindow. I moved cancelling the prerender on the UI thread.

BUG=304341
R=jochen@chromium.org, tburkard@chromium.org

Review URL: https://codereview.chromium.org/112573008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243375 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chrome_content_browser_client.cc

@@ -572,6 +572,13 @@ void HandleBlockedPopupOnUIThread(const BlockedWindowParams& params) {
   if (!tab)
     return;
 
+  prerender::PrerenderContents* prerender_contents =
+      prerender::PrerenderContents::FromWebContents(tab);
+  if (prerender_contents) {
+    prerender_contents->Destroy(prerender::FINAL_STATUS_CREATE_NEW_WINDOW);
+    return;
+  }
+
   PopupBlockerTabHelper* popup_helper =
       PopupBlockerTabHelper::FromWebContents(tab);
   if (!popup_helper)
@@ -2083,14 +2090,6 @@ bool ChromeContentBrowserClient::CanCreateWindow(
     return false;
   }
 
-  if (g_browser_process->prerender_tracker() &&
-      g_browser_process->prerender_tracker()->TryCancelOnIOThread(
-          render_process_id,
-          opener_id,
-          prerender::FINAL_STATUS_CREATE_NEW_WINDOW)) {
-    return false;
-  }
-
   if (is_guest)
     return true;
 

chrome/browser/prerender/prerender_contents.cc

@@ -92,6 +92,21 @@ class PrerenderContents::WebContentsDelegateImpl
     callback.Run(false);
   }
 
+   virtual bool ShouldCreateWebContents(
+       WebContents* web_contents,
+       int route_id,
+       WindowContainerType window_container_type,
+       const base::string16& frame_name,
+       const GURL& target_url,
+       const std::string& partition_id,
+       SessionStorageNamespace* session_storage_namespace) OVERRIDE {
+    // Since we don't want to permit child windows that would have a
+    // window.opener property, terminate prerendering.
+    prerender_contents_->Destroy(FINAL_STATUS_CREATE_NEW_WINDOW);
+    // Cancel the popup.
+    return false;
+  }
+
   virtual bool OnGoToEntryOffset(int offset) OVERRIDE {
     // This isn't allowed because the history merge operation
     // does not work if there are renderer issued challenges.

content/browser/web_contents/web_contents_impl.cc

@@ -1368,6 +1368,12 @@ void WebContentsImpl::CreateNewWindow(
                                           params.target_url,
                                           partition_id,
                                           session_storage_namespace)) {
+    if (route_id != MSG_ROUTING_NONE &&
+        !RenderViewHost::FromID(render_process_id, route_id)) {
+      // If the embedder didn't create a WebContents for this route, we need to
+      // delete the RenderView that had already been created.
+      Send(new ViewMsg_Close(route_id));
+    }
     GetRenderViewHost()->GetProcess()->ResumeRequestsForView(route_id);
     GetRenderViewHost()->GetProcess()->ResumeRequestsForView(
         main_frame_route_id);

content/public/browser/web_contents_delegate.h

@@ -294,6 +294,8 @@ class CONTENT_EXPORT WebContentsDelegate {
   // Allows delegate to control whether a WebContents will be created. Returns
   // true to allow the creation. Default is to allow it. In cases where the
   // delegate handles the creation/navigation itself, it will use |target_url|.
+  // The embedder has to synchronously adopt |route_id| or else the view will
+  // be destroyed.
   virtual bool ShouldCreateWebContents(
       WebContents* web_contents,
       int route_id,