Introduce support for origins that require process isolation.

content/browser/isolated_origin_browsertest.cc

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/browser/site_instance_impl.h"
+#include "content/browser/web_contents/web_contents_impl.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/common/content_switches.h"
+#include "content/public/test/browser_test_utils.h"
+#include "content/public/test/content_browser_test.h"
+#include "content/public/test/content_browser_test_utils.h"
+#include "content/public/test/test_frame_navigation_observer.h"
+#include "content/public/test/test_navigation_observer.h"
+#include "content/public/test/test_utils.h"
+#include "content/shell/browser/shell.h"
+#include "content/test/content_browser_test_utils_internal.h"
+#include "net/dns/mock_host_resolver.h"
+#include "net/test/embedded_test_server/embedded_test_server.h"
+#include "url/gurl.h"
+
+namespace content {
+
+class IsolatedOriginTest : public ContentBrowserTest {
+ public:
+  IsolatedOriginTest() {}
+  ~IsolatedOriginTest() override {}
+
+  void SetUpCommandLine(base::CommandLine* command_line) override {
+    ASSERT_TRUE(embedded_test_server()->InitializeAndListen());
+
+    std::string origin_list =
+        embedded_test_server()->GetURL("isolated.foo.com", "/").spec() + "," +
+        embedded_test_server()->GetURL("isolated.bar.com", "/").spec();
+    command_line->AppendSwitchASCII(switches::kIsolateOrigins, origin_list);
+  }
+
+  void SetUpOnMainThread() override {
+    host_resolver()->AddRule("*", "127.0.0.1");
+    embedded_test_server()->StartAcceptingConnections();
+  }
+
+  WebContentsImpl* web_contents() const {
+    return static_cast<WebContentsImpl*>(shell()->web_contents());
+  }
+};
+
+// Check that navigating a main frame from an non-isolated origin to an
+// isolated origin and vice versa swaps processes and uses a new SiteInstance,
+// both for browser-initiated and renderer-initiated navigations.
+IN_PROC_BROWSER_TEST_F(IsolatedOriginTest, MainFrameNavigation) {
+  GURL unisolated_url(
+      embedded_test_server()->GetURL("www.foo.com", "/title1.html"));
+  GURL isolated_url(
+      embedded_test_server()->GetURL("isolated.foo.com", "/title2.html"));
+
+  EXPECT_TRUE(NavigateToURL(shell(), unisolated_url));
+
+  // Open a same-site popup to keep the www.foo.com process alive.
+  Shell* popup = OpenPopup(shell(), GURL(url::kAboutBlankURL), "foo");
+  SiteInstance* unisolated_instance =
+      popup->web_contents()->GetMainFrame()->GetSiteInstance();
+
+  // Navigate to an isolated origin and ensure that this ends up in a new

[Charlie Reis, 2017/05/05 23:18:51]

Let's clarify this is a browser-initiated navigation.

[alexmos, 2017/05/16 17:26:37]

Done.

+  // process and SiteInstance for isolated.foo.com.
+  EXPECT_TRUE(NavigateToURL(shell(), isolated_url));
+
+  scoped_refptr<SiteInstance> isolated_instance =
+      web_contents()->GetSiteInstance();
+  EXPECT_NE(isolated_instance, unisolated_instance);
+  EXPECT_NE(web_contents()->GetMainFrame()->GetProcess(),
+            popup->web_contents()->GetMainFrame()->GetProcess());
+
+  // The site URL for isolated.foo.com should be the full origin rather than
+  // eTLD+1.
+  EXPECT_EQ(isolated_url.GetOrigin(), isolated_instance->GetSiteURL());
+
+  // Navigate to www.foo.com.  This should end up in the |popup|'s process.

[Charlie Reis, 2017/05/05 23:18:51]

And that this is a renderer-initiated navigation.  (Thanks for testing both!)

I feel like we should probably test renderer-initiated from unisolated to
isolated as well, just to be safe.

[alexmos, 2017/05/16 17:26:37]

Done.
Done.

+  {
+    TestNavigationObserver observer(web_contents());
+    EXPECT_TRUE(ExecuteScript(
+        web_contents(), "location.href = '" + unisolated_url.spec() + "'"));
+    observer.Wait();
+  }
+
+  EXPECT_EQ(web_contents()->GetSiteInstance(), unisolated_instance);
+  EXPECT_EQ(web_contents()->GetMainFrame()->GetProcess(),
+            popup->web_contents()->GetMainFrame()->GetProcess());
+
+  // Go back and verify that we end up in an isolated process once again.
+  TestNavigationObserver back_observer(web_contents());
+  web_contents()->GetController().GoBack();
+  back_observer.Wait();
+
+  EXPECT_EQ(web_contents()->GetSiteInstance(), isolated_instance);

[Charlie Reis, 2017/05/05 23:18:51]

nit: Swap order (expected, actual)

[alexmos, 2017/05/16 17:26:37]

Done.

+  EXPECT_NE(web_contents()->GetMainFrame()->GetProcess(),
+            popup->web_contents()->GetMainFrame()->GetProcess());
+
+  // Navigate to another isolated origin and ensure there is a different
+  // isolated process.
+  GURL second_isolated_url(
+      embedded_test_server()->GetURL("isolated.bar.com", "/title3.html"));
+  {
+    TestNavigationObserver observer(web_contents());
+    EXPECT_TRUE(
+        ExecuteScript(web_contents(),
+                      "location.href = '" + second_isolated_url.spec() + "'"));
+    observer.Wait();
+  }
+
+  EXPECT_EQ(second_isolated_url.GetOrigin(),
+            web_contents()->GetSiteInstance()->GetSiteURL());
+  EXPECT_NE(web_contents()->GetSiteInstance(), isolated_instance);
+  EXPECT_NE(web_contents()->GetSiteInstance(), unisolated_instance);
+}
+
+// Check that opening a popup for an isolated origin puts it into a new process
+// and its own SiteInstance.
+IN_PROC_BROWSER_TEST_F(IsolatedOriginTest, Popup) {
+  GURL unisolated_url(
+      embedded_test_server()->GetURL("foo.com", "/title1.html"));
+  GURL isolated_url(
+      embedded_test_server()->GetURL("isolated.foo.com", "/title2.html"));
+
+  EXPECT_TRUE(NavigateToURL(shell(), unisolated_url));
+
+  // Open a popup to a URL with an isolated origin and ensure that there was a
+  // process swap.
+  Shell* popup = OpenPopup(shell(), isolated_url, "foo");
+
+  EXPECT_NE(shell()->web_contents()->GetSiteInstance(),
+            popup->web_contents()->GetSiteInstance());
+
+  // The popup's site URL should match the full isolated origin.
+  EXPECT_EQ(isolated_url.GetOrigin(),
+            popup->web_contents()->GetSiteInstance()->GetSiteURL());
+
+  // Now open a second popup from an isolated origin to a URL with an
+  // unisolated origin and ensure that there was another process swap.
+  Shell* popup2 = OpenPopup(popup, unisolated_url, "bar");
+  EXPECT_EQ(shell()->web_contents()->GetSiteInstance(),
+            popup2->web_contents()->GetSiteInstance());
+  EXPECT_NE(popup->web_contents()->GetSiteInstance(),
+            popup2->web_contents()->GetSiteInstance());
+}
+
+// Check that navigating a subframe to an isolated origin puts the subframe
+// into an OOPIF and its own SiteInstance.  Also check that the isolated
+// frame's subframes also end up in correct SiteInstance.
+IN_PROC_BROWSER_TEST_F(IsolatedOriginTest, Subframe) {
+  GURL top_url(
+      embedded_test_server()->GetURL("www.foo.com", "/page_with_iframe.html"));
+  EXPECT_TRUE(NavigateToURL(shell(), top_url));
+
+  GURL isolated_url(embedded_test_server()->GetURL("isolated.foo.com",
+                                                   "/page_with_iframe.html"));
+
+  FrameTreeNode* root = web_contents()->GetFrameTree()->root();
+  FrameTreeNode* child = root->child_at(0);
+
+  NavigateIframeToURL(web_contents(), "test_iframe", isolated_url);
+  EXPECT_EQ(child->current_url(), isolated_url);
+
+  // Verify that the child frame is an OOPIF with a different SiteInstance.
+  EXPECT_NE(web_contents()->GetSiteInstance(),
+            child->current_frame_host()->GetSiteInstance());
+  EXPECT_TRUE(child->current_frame_host()->IsCrossProcessSubframe());
+  EXPECT_EQ(isolated_url.GetOrigin(),
+            child->current_frame_host()->GetSiteInstance()->GetSiteURL());
+
+  // Verify that the isolated frame's subframe (which starts out at a relative
+  // path) is kept in the isolated parent's SiteInstance.
+  FrameTreeNode* grandchild = child->child_at(0);
+  EXPECT_EQ(child->current_frame_host()->GetSiteInstance(),
+            grandchild->current_frame_host()->GetSiteInstance());
+
+  // Navigating the grandchild to www.foo.com should put it into the top
+  // frame's SiteInstance.
+  GURL non_isolated_url(
+      embedded_test_server()->GetURL("www.foo.com", "/title3.html"));
+  TestFrameNavigationObserver observer(grandchild);
+  EXPECT_TRUE(ExecuteScript(
+      grandchild, "location.href = '" + non_isolated_url.spec() + "';"));
+  observer.Wait();
+  EXPECT_EQ(grandchild->current_url(), non_isolated_url);
+
+  EXPECT_EQ(root->current_frame_host()->GetSiteInstance(),
+            grandchild->current_frame_host()->GetSiteInstance());
+  EXPECT_NE(child->current_frame_host()->GetSiteInstance(),
+            grandchild->current_frame_host()->GetSiteInstance());
+}
+
+// Check that when an non-isolated origin foo.com embeds a subframe from an
+// isolated origin, which then navigates to a non-isolated origin bar.com,
+// bar.com goes back to the main frame's SiteInstance.  See
+// https://crbug.com/711006.
+IN_PROC_BROWSER_TEST_F(IsolatedOriginTest,
+                       NoOOPIFWhenIsolatedOriginNavigatesToNonIsolatedOrigin) {
+  if (AreAllSitesIsolatedForTesting())
+    return;
+
+  GURL top_url(
+      embedded_test_server()->GetURL("www.foo.com", "/page_with_iframe.html"));
+  EXPECT_TRUE(NavigateToURL(shell(), top_url));
+
+  FrameTreeNode* root = web_contents()->GetFrameTree()->root();
+  FrameTreeNode* child = root->child_at(0);
+
+  GURL isolated_url(embedded_test_server()->GetURL("isolated.foo.com",
+                                                   "/page_with_iframe.html"));
+
+  NavigateIframeToURL(web_contents(), "test_iframe", isolated_url);
+  EXPECT_EQ(child->current_url(), isolated_url);
+
+  // Verify that the child frame is an OOPIF with a different SiteInstance.
+  EXPECT_NE(web_contents()->GetSiteInstance(),
+            child->current_frame_host()->GetSiteInstance());
+  EXPECT_TRUE(child->current_frame_host()->IsCrossProcessSubframe());
+  EXPECT_EQ(isolated_url.GetOrigin(),
+            child->current_frame_host()->GetSiteInstance()->GetSiteURL());
+
+  // Navigate the child frame cross-site, but to a non-isolated origin. When
+  // not in --site-per-process, this should bring the subframe back into the
+  // main frame's SiteInstance.
+  GURL bar_url(embedded_test_server()->GetURL("bar.com", "/title1.html"));
+  EXPECT_FALSE(SiteInstanceImpl::IsIsolatedOrigin(url::Origin(bar_url)));
+  NavigateIframeToURL(web_contents(), "test_iframe", bar_url);
+  EXPECT_EQ(web_contents()->GetSiteInstance(),
+            child->current_frame_host()->GetSiteInstance());
+  EXPECT_FALSE(child->current_frame_host()->IsCrossProcessSubframe());
+}
+
+}  // namespace content