Modify --isolate-extensions to not isolate hosted apps.

chrome/browser/site_details_browsertest.cc

Index: chrome/browser/site_details_browsertest.cc
diff --git a/chrome/browser/site_details_browsertest.cc b/chrome/browser/site_details_browsertest.cc
index 43c955aa0f0f5007af8564410da1e946e5ba7c07..2754190e631104a044a3e57cab95856cc86cd4c5 100644
--- a/chrome/browser/site_details_browsertest.cc
+++ b/chrome/browser/site_details_browsertest.cc
@@ -746,14 +746,14 @@ IN_PROC_BROWSER_TEST_F(SiteDetailsBrowserTest, IsolateExtensionsHostedApps) {
               ElementsAre(Bucket(1, 1)));
   EXPECT_THAT(details->uma()->GetAllSamples(
                   "SiteIsolation.IsolateExtensionsProcessCountEstimate"),
-              ElementsAre(Bucket(2, 1)));
+              ElementsAre(Bucket(1, 1)));
   EXPECT_THAT(details->uma()->GetAllSamples(
                   "SiteIsolation.IsolateExtensionsProcessCountLowerBound"),
-              ElementsAre(Bucket(2, 1)));
+              ElementsAre(Bucket(1, 1)));
   EXPECT_THAT(details->uma()->GetAllSamples(
                   "SiteIsolation.IsolateExtensionsProcessCountNoLimit"),
-              ElementsAre(Bucket(2, 1)));
-  EXPECT_THAT(GetRenderProcessCount(), EqualsIfExtensionsIsolated(2));
+              ElementsAre(Bucket(1, 1)));
+  EXPECT_THAT(GetRenderProcessCount(), EqualsIfExtensionsIsolated(1));
 
   ui_test_utils::NavigateToURL(browser(), app_in_web_iframe_url);
   details = new TestMemoryDetails();
@@ -763,13 +763,13 @@ IN_PROC_BROWSER_TEST_F(SiteDetailsBrowserTest, IsolateExtensionsHostedApps) {
               ElementsAre(Bucket(1, 1)));
   EXPECT_THAT(details->uma()->GetAllSamples(
                   "SiteIsolation.IsolateExtensionsProcessCountEstimate"),
-              ElementsAre(Bucket(2, 1)));
+              ElementsAre(Bucket(1, 1)));
   EXPECT_THAT(details->uma()->GetAllSamples(
                   "SiteIsolation.IsolateExtensionsProcessCountLowerBound"),
-              ElementsAre(Bucket(2, 1)));
+              ElementsAre(Bucket(1, 1)));
   EXPECT_THAT(details->uma()->GetAllSamples(
                   "SiteIsolation.IsolateExtensionsProcessCountNoLimit"),
-              ElementsAre(Bucket(2, 1)));
+              ElementsAre(Bucket(1, 1)));
 
-  EXPECT_THAT(GetRenderProcessCount(), EqualsIfExtensionsIsolated(2));
+  EXPECT_THAT(GetRenderProcessCount(), EqualsIfExtensionsIsolated(1));
 }