Index: content/browser/site_per_process_browsertest.cc |
diff --git a/content/browser/site_per_process_browsertest.cc b/content/browser/site_per_process_browsertest.cc |
index bae0956c29917fbee29d76ede216ca6f01017ee6..1e8536285b8b882ad9eeae87b45cb1d73625f684 100644 |
--- a/content/browser/site_per_process_browsertest.cc |
+++ b/content/browser/site_per_process_browsertest.cc |
@@ -7118,4 +7118,100 @@ IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest, |
} |
#endif |
+// Check that out-of-process frames correctly calculate their ability to enter |
+// fullscreen. A frame is allowed enter fullscreen if the allowFullscreen |
+// attribute is present in all of its ancestor <iframe> elements. For OOPIF, |
+// when a parent frame changes this attribute, the change is replicated to the |
+// child frame and its proxies. |
+// |
+// The test checks the following cases: |
+// |
+// 1. Static attribute (<iframe allowfullscreen>) |
+// 2. Attribute injected dynamically via JavaScript |
+// 3. Multiple levels of nesting (A-embed-B-embed-C) |
+// 4. Cross-site subframe navigation |
+IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest, AllowFullscreen) { |
+ // Load a page with a cross-site <iframe allowFullscreen>. |
+ GURL url_1(embedded_test_server()->GetURL( |
+ "a.com", "/page_with_allowfullscreen_frame.html")); |
+ EXPECT_TRUE(NavigateToURL(shell(), url_1)); |
+ |
+ WebContentsImpl* contents = web_contents(); |
+ FrameTreeNode* root = contents->GetFrameTree()->root(); |
+ |
+ // Helper to check if a frame is allowed to go fullscreen on the renderer |
+ // side. |
+ auto is_fullscreen_allowed = [](FrameTreeNode* ftn) { |
+ bool fullscreen_allowed = false; |
+ EXPECT_TRUE(ExecuteScriptAndExtractBool( |
+ ftn->current_frame_host(), |
+ "window.domAutomationController.send(document.webkitFullscreenEnabled)", |
+ &fullscreen_allowed)); |
+ return fullscreen_allowed; |
+ }; |
+ |
+ EXPECT_TRUE(is_fullscreen_allowed(root)); |
+ EXPECT_TRUE(is_fullscreen_allowed(root->child_at(0))); |
+ EXPECT_TRUE(root->child_at(0)->frame_owner_properties().allowFullscreen); |
+ |
+ // Now navigate to a page with two <iframe>'s, both without allowFullscreen. |
+ GURL url_2(embedded_test_server()->GetURL( |
+ "a.com", "/cross_site_iframe_factory.html?a(b,c)")); |
+ EXPECT_TRUE(NavigateToURL(shell(), url_2)); |
+ EXPECT_FALSE(root->child_at(0)->frame_owner_properties().allowFullscreen); |
+ EXPECT_FALSE(root->child_at(1)->frame_owner_properties().allowFullscreen); |
+ |
+ EXPECT_TRUE(is_fullscreen_allowed(root)); |
+ EXPECT_FALSE(is_fullscreen_allowed(root->child_at(0))); |
+ EXPECT_FALSE(is_fullscreen_allowed(root->child_at(1))); |
+ |
+ // Dynamically enable fullscreen for first subframe and check that the |
+ // fullscreen property was updated on the FrameTreeNode. |
+ EXPECT_TRUE(ExecuteScript( |
+ root->current_frame_host(), |
+ "document.getElementById('child-0').allowFullscreen='true'")); |
+ EXPECT_TRUE(root->child_at(0)->frame_owner_properties().allowFullscreen); |
+ |
+ // Check that the first subframe is now allowed to go fullscreen. Other |
+ // frames shouldn't be affected. |
+ EXPECT_TRUE(is_fullscreen_allowed(root)); |
+ EXPECT_TRUE(is_fullscreen_allowed(root->child_at(0))); |
+ EXPECT_FALSE(is_fullscreen_allowed(root->child_at(1))); |
+ |
+ // Now navigate to a page with two levels of nesting. |
+ GURL url_3(embedded_test_server()->GetURL( |
+ "a.com", "/cross_site_iframe_factory.html?a(b(c))")); |
+ EXPECT_TRUE(NavigateToURL(shell(), url_3)); |
+ |
+ EXPECT_TRUE(is_fullscreen_allowed(root)); |
+ EXPECT_FALSE(is_fullscreen_allowed(root->child_at(0))); |
+ EXPECT_FALSE(is_fullscreen_allowed(root->child_at(0)->child_at(0))); |
+ |
+ // Dynamically enable fullscreen for bottom subframe. |
+ EXPECT_TRUE(ExecuteScript( |
+ root->child_at(0)->current_frame_host(), |
+ "document.getElementById('child-0').allowFullscreen='true'")); |
+ |
+ // This still shouldn't allow the bottom child to go fullscreen, since the |
+ // top frame hasn't allowed fullscreen for the middle frame. |
+ EXPECT_TRUE(is_fullscreen_allowed(root)); |
+ EXPECT_FALSE(is_fullscreen_allowed(root->child_at(0))); |
+ EXPECT_FALSE(is_fullscreen_allowed(root->child_at(0)->child_at(0))); |
+ |
+ // Now allow fullscreen for the middle frame. |
+ EXPECT_TRUE(ExecuteScript( |
+ root->current_frame_host(), |
+ "document.getElementById('child-0').allowFullscreen='true'")); |
+ |
+ // All frames should be allowed to go fullscreen now. |
+ EXPECT_TRUE(is_fullscreen_allowed(root)); |
+ EXPECT_TRUE(is_fullscreen_allowed(root->child_at(0))); |
+ EXPECT_TRUE(is_fullscreen_allowed(root->child_at(0)->child_at(0))); |
+ |
+ // Cross-site navigation should preserve the fullscreen flags. |
+ NavigateFrameToURL(root->child_at(0)->child_at(0), |
+ embedded_test_server()->GetURL("d.com", "/title1.html")); |
+ EXPECT_TRUE(is_fullscreen_allowed(root->child_at(0)->child_at(0))); |
+} |
+ |
} // namespace content |