Introduce support for origins that require process isolation.

content/browser/site_instance_impl_unittest.cc

Index: content/browser/site_instance_impl_unittest.cc
diff --git a/content/browser/site_instance_impl_unittest.cc b/content/browser/site_instance_impl_unittest.cc
index b79379debe987e5543587dec9734d8e7c59d1945..fda1d941ca9f0e00648b2c5b9b02e6f57d9fda97 100644
--- a/content/browser/site_instance_impl_unittest.cc
+++ b/content/browser/site_instance_impl_unittest.cc
@@ -841,4 +841,98 @@ TEST_F(SiteInstanceTest, DefaultSubframeSiteInstance) {
   EXPECT_EQ(1, browser_client()->GetAndClearBrowsingInstanceDeleteCount());
 }
 
+TEST_F(SiteInstanceTest, IsolatedOrigins) {
+  GURL foo_url("http://www.foo.com");
+  GURL isolated_foo_url("http://isolated.foo.com");
+  GURL isolated_bar_url("http://isolated.bar.com");

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

Let's add tests for bar.isolated.foo.com, too.

[alexmos, 2017/05/16 17:26:38]

I've built support for keeping those in isolated.foo.com, but that has quite a
bit of plumbing/testing/open questions, so I decided to spin it off to a
separate CL (https://codereview.chromium.org/2891443002, still needs some
polishing).  Does that sound ok?  As of this CL, bar.isolated.foo.com will be
kept in foo.com's SiteInstance.

[Charlie Reis, 2017/05/19 00:10:18]

Sounds good!

+
+  EXPECT_FALSE(
+      SiteInstanceImpl::IsIsolatedOrigin(url::Origin(isolated_foo_url)));

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

Maybe check that IsSameWebsite for foo_url and isolated_foo_url returns true
before we add it as an isolated origin?

[alexmos, 2017/05/16 17:26:38]

Done.

+
+  SiteInstanceImpl::AddIsolatedOrigin(url::Origin(isolated_foo_url));
+  EXPECT_TRUE(
+      SiteInstanceImpl::IsIsolatedOrigin(url::Origin(isolated_foo_url)));
+  EXPECT_FALSE(SiteInstanceImpl::IsIsolatedOrigin(url::Origin(foo_url)));
+  EXPECT_FALSE(
+      SiteInstanceImpl::IsIsolatedOrigin(url::Origin(GURL("http://foo.com"))));
+  EXPECT_FALSE(SiteInstanceImpl::IsIsolatedOrigin(
+      url::Origin(GURL("http://www.bar.com"))));
+  EXPECT_FALSE(SiteInstanceImpl::IsIsolatedOrigin(
+      url::Origin(GURL("https://isolated.foo.com"))));
+  EXPECT_FALSE(SiteInstanceImpl::IsIsolatedOrigin(
+      url::Origin(GURL("http://isolated.foo.com:12345"))));
+  EXPECT_FALSE(SiteInstanceImpl::IsIsolatedOrigin(
+      url::Origin(GURL("http://bar.isolated.foo.com"))));
+
+  SiteInstanceImpl::AddIsolatedOrigin(url::Origin(isolated_bar_url));
+  EXPECT_TRUE(
+      SiteInstanceImpl::IsIsolatedOrigin(url::Origin(isolated_bar_url)));
+
+  // IsSameWebSite should compare origins rather than sites if either URL is an
+  // isolated origin.
+  EXPECT_FALSE(SiteInstance::IsSameWebSite(nullptr, foo_url, isolated_foo_url));
+  EXPECT_FALSE(SiteInstance::IsSameWebSite(nullptr, isolated_foo_url, foo_url));
+  EXPECT_FALSE(
+      SiteInstance::IsSameWebSite(nullptr, isolated_foo_url, isolated_bar_url));
+  EXPECT_TRUE(
+      SiteInstance::IsSameWebSite(nullptr, isolated_foo_url, isolated_foo_url));
+
+  // Ensure blob and filesystem URLs with isolated origins are compared
+  // correctly.
+  GURL isolated_blob_foo_url("blob:http://isolated.foo.com/uuid");
+  EXPECT_TRUE(SiteInstance::IsSameWebSite(nullptr, isolated_foo_url,
+                                          isolated_blob_foo_url));
+  GURL isolated_filesystem_foo_url("filesystem:http://isolated.foo.com/bar/");
+  EXPECT_TRUE(SiteInstance::IsSameWebSite(nullptr, isolated_foo_url,
+                                          isolated_filesystem_foo_url));
+
+  // The site URL for an isolated origin should be the full origin rather than
+  // eTLD+1.
+  EXPECT_EQ(isolated_foo_url,
+            SiteInstance::GetSiteForURL(nullptr, isolated_foo_url));
+  EXPECT_EQ(isolated_bar_url,
+            SiteInstance::GetSiteForURL(nullptr, isolated_bar_url));
+  EXPECT_EQ(isolated_foo_url,
+            SiteInstance::GetSiteForURL(nullptr, isolated_blob_foo_url));
+  EXPECT_EQ(isolated_foo_url,
+            SiteInstance::GetSiteForURL(nullptr, isolated_filesystem_foo_url));
+
+  // Isolated origins always require a dedicated process.
+  EXPECT_TRUE(SiteInstanceImpl::DoesSiteRequireDedicatedProcess(
+      nullptr, isolated_foo_url));
+  EXPECT_TRUE(SiteInstanceImpl::DoesSiteRequireDedicatedProcess(
+      nullptr, isolated_bar_url));
+  EXPECT_TRUE(SiteInstanceImpl::DoesSiteRequireDedicatedProcess(
+      nullptr, isolated_blob_foo_url));
+  EXPECT_TRUE(SiteInstanceImpl::DoesSiteRequireDedicatedProcess(
+      nullptr, isolated_filesystem_foo_url));
+}
+
+// Verifies parsing logic that extracts origins from --isolate-origins.
+TEST_F(SiteInstanceTest, IsolateOriginsFromCommandLine) {
+  // Invalid and unique origins are not permitted.
+  SiteInstanceImpl::AddIsolatedOriginsFromCommandLine("foo");
+  SiteInstanceImpl::AddIsolatedOriginsFromCommandLine("");
+  SiteInstanceImpl::AddIsolatedOriginsFromCommandLine("about:blank");
+  EXPECT_EQ(0U, SiteInstanceImpl::GetIsolatedOrigins()->size());
+
+  SiteInstanceImpl::AddIsolatedOriginsFromCommandLine(
+      "http://isolated.foo.com");
+  EXPECT_EQ(1U, SiteInstanceImpl::GetIsolatedOrigins()->size());
+  EXPECT_TRUE(SiteInstanceImpl::IsIsolatedOrigin(
+      url::Origin(GURL("http://isolated.foo.com"))));
+
+  SiteInstanceImpl::AddIsolatedOriginsFromCommandLine(
+      "http://a.com,https://b.com,,https://c.com:8000");
+  EXPECT_EQ(4U, SiteInstanceImpl::GetIsolatedOrigins()->size());
+  EXPECT_TRUE(SiteInstanceImpl::IsIsolatedOrigin(
+      url::Origin(GURL("http://isolated.foo.com"))));
+  EXPECT_TRUE(
+      SiteInstanceImpl::IsIsolatedOrigin(url::Origin(GURL("http://a.com"))));
+  EXPECT_TRUE(
+      SiteInstanceImpl::IsIsolatedOrigin(url::Origin(GURL("https://b.com"))));
+  EXPECT_TRUE(SiteInstanceImpl::IsIsolatedOrigin(
+      url::Origin(GURL("https://c.com:8000"))));
+}
+
 }  // namespace content