Pass result of blockage across content API when new tab blocked.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
===================================================================
--- content/browser/web_contents/web_contents_impl.cc	(revision 153532)
+++ content/browser/web_contents/web_contents_impl.cc	(working copy)
@@ -1029,15 +1029,15 @@
   return tc;
 }
 
-void WebContentsImpl::AddNewContents(WebContents* new_contents,
+bool WebContentsImpl::AddNewContents(WebContents* new_contents,
                                      WindowOpenDisposition disposition,
                                      const gfx::Rect& initial_pos,
                                      bool user_gesture) {
   if (!delegate_)
-    return;
+    return false;
 
-  delegate_->AddNewContents(this, new_contents, disposition, initial_pos,
-                            user_gesture);
+  return delegate_->AddNewContents(
+      this, new_contents, disposition, initial_pos, user_gesture);
 }
 
 gfx::NativeView WebContentsImpl::GetContentNativeView() const {
@@ -1275,23 +1275,27 @@
     pending_contents_[route_id] = new_contents;
   }
 
+  bool not_blocked = true;
   if (delegate_) {
-    delegate_->WebContentsCreated(
+    not_blocked = delegate_->WebContentsCreated(
         this, params.opener_frame_id, params.target_url, new_contents);
   }
 
-  if (params.opener_suppressed) {
+  if (params.opener_suppressed && not_blocked) {
     // When the opener is suppressed, the original renderer cannot access the
     // new window.  As a result, we need to show and navigate the window here.
     gfx::Rect initial_pos;
-    AddNewContents(
+    not_blocked = AddNewContents(
         new_contents, params.disposition, initial_pos, params.user_gesture);
 
-    content::OpenURLParams open_params(params.target_url, content::Referrer(),
-                                       CURRENT_TAB,
-                                       content::PAGE_TRANSITION_LINK,
-                                       true /* is_renderer_initiated */);
-    new_contents->OpenURL(open_params);
+    if (not_blocked) {
+      content::OpenURLParams open_params(params.target_url,
+                                         content::Referrer(),
+                                         CURRENT_TAB,
+                                         content::PAGE_TRANSITION_LINK,
+                                         true /* is_renderer_initiated */);
+      new_contents->OpenURL(open_params);
+    }
   }
 }