1 files changed, 50 insertions, 0 deletions
diff --git a/chromium/content/browser/site_per_process_browsertest.cc b/chromium/content/browser/site_per_process_browsertest.cc
index 645960a3262..92bff576b82 100644
--- a/chromium/content/browser/site_per_process_browsertest.cc
+++ b/chromium/content/browser/site_per_process_browsertest.cc
@@ -13750,4 +13750,54 @@ IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest,
   }
 }
 
+// Ensure that when two cross-site frames have subframes with unique origins,
+// and those subframes create blob URLs and navigate to them, the blob URLs end
+// up in different processes. See https://crbug.com/863623.
+IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest,
+                       TwoBlobURLsWithNullOriginDontShareProcess) {
+  GURL main_url(embedded_test_server()->GetURL(
+      "a.com", "/navigation_controller/page_with_data_iframe.html"));
+  EXPECT_TRUE(NavigateToURL(shell(), main_url));
+  FrameTreeNode* root = web_contents()->GetFrameTree()->root();
+  FrameTreeNode* subframe = root->child_at(0);
+
+  // Create a blob URL in the subframe, and navigate to it.
+  TestNavigationObserver observer(shell()->web_contents());
+  std::string blob_script =
+      "var blob = new Blob(['foo'], {type : 'text/html'});"
+      "var url = URL.createObjectURL(blob);"
+      "location = url;";
+  EXPECT_TRUE(ExecuteScript(subframe, blob_script));
+  observer.Wait();
+  RenderFrameHostImpl* subframe_rfh = subframe->current_frame_host();
+  EXPECT_TRUE(subframe_rfh->GetLastCommittedURL().SchemeIsBlob());
+
+  // Open a cross-site popup and repeat these steps.
+  GURL popup_url(embedded_test_server()->GetURL(
+      "b.com", "/navigation_controller/page_with_data_iframe.html"));
+  Shell* new_shell = OpenPopup(root, popup_url, "");
+  FrameTreeNode* popup_root =
+      static_cast<WebContentsImpl*>(new_shell->web_contents())
+          ->GetFrameTree()
+          ->root();
+  FrameTreeNode* popup_subframe = popup_root->child_at(0);
+
+  TestNavigationObserver popup_observer(new_shell->web_contents());
+  EXPECT_TRUE(ExecuteScript(popup_subframe, blob_script));
+  popup_observer.Wait();
+  RenderFrameHostImpl* popup_subframe_rfh =
+      popup_subframe->current_frame_host();
+  EXPECT_TRUE(popup_subframe_rfh->GetLastCommittedURL().SchemeIsBlob());
+
+  // Ensure that the two blob subframes don't share a process or SiteInstance.
+  EXPECT_NE(subframe->current_frame_host()->GetSiteInstance(),
+            popup_subframe->current_frame_host()->GetSiteInstance());
+  EXPECT_NE(
+      subframe->current_frame_host()->GetSiteInstance()->GetProcess(),
+      popup_subframe->current_frame_host()->GetSiteInstance()->GetProcess());
+  EXPECT_NE(
+      subframe->current_frame_host()->GetSiteInstance()->GetSiteURL(),
+      popup_subframe->current_frame_host()->GetSiteInstance()->GetSiteURL());
+}
+
 }  // namespace content