Fix flakiness by removing GetLastActive from extension browser tests.

chrome/browser/extensions/extension_browsertest.cc

Index: chrome/browser/extensions/extension_browsertest.cc
diff --git a/chrome/browser/extensions/extension_browsertest.cc b/chrome/browser/extensions/extension_browsertest.cc
index 5297e1d9b12c390c0dc0ac1d0ba74f7a013959be..a56ef53a2612da2bd23eddaf0d15643412e6c8f1 100644
--- a/chrome/browser/extensions/extension_browsertest.cc
+++ b/chrome/browser/extensions/extension_browsertest.cc
@@ -12,6 +12,7 @@
 #include "base/path_service.h"
 #include "base/scoped_temp_dir.h"
 #include "base/string_number_conversions.h"
+#include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/app_shortcut_manager.h"
 #include "chrome/browser/extensions/component_loader.h"
 #include "chrome/browser/extensions/crx_installer.h"
@@ -28,6 +29,8 @@
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/ui_test_utils.h"
+#include "content/public/browser/navigation_controller.h"
+#include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_view_host.h"
@@ -460,6 +463,53 @@ bool ExtensionBrowserTest::WaitForExtensionCrash(
   return (service->GetExtensionById(extension_id, true) == NULL);
 }
 
+void ExtensionBrowserTest::OpenWindow(content::WebContents* contents,
+                                      const GURL& url,
+                                      bool newtab_process_should_equal_opener,
+                                      content::WebContents** newtab_result) {
+  ui_test_utils::WindowedNotificationObserver observer(
+      content::NOTIFICATION_LOAD_STOP,
+      content::NotificationService::AllSources());
+  ASSERT_TRUE(ui_test_utils::ExecuteJavaScript(
+      contents->GetRenderViewHost(), L"",
+      L"window.open('" + UTF8ToWide(url.spec()) + L"');"));
+
+  // The above window.open call is not user-initiated, so it will create
+  // a popup window instead of a new tab in current window.
+  // The stop notification will come from the new tab.
+  observer.Wait();
+  content::NavigationController* controller =
+      content::Source<content::NavigationController>(observer.source()).ptr();
+  content::WebContents* newtab = controller->GetWebContents();
+  ASSERT_TRUE(newtab);
+  EXPECT_EQ(url, controller->GetLastCommittedEntry()->GetURL());
+  if (newtab_process_should_equal_opener)

[Matt Perry, 2012/05/23 00:56:40]

It seems weird to have this special check here. Can the calling code handle it
instead? Maybe with a small wrapper function?

[Charlie Reis, 2012/05/23 01:01:20]

I suppose I could duplicate it into all the call sites, but it turns out to be
an interesting check at every call site.  Maybe one alternative is adding a
second out parameter for bool* opener_in_same_process.  Callers could then
easily do a check on it if they care.

[Matt Perry, 2012/05/23 01:02:19]

OK, nevermind. Since all callers care, let's just leave it as is.

+    EXPECT_EQ(contents->GetRenderProcessHost(), newtab->GetRenderProcessHost());
+  else
+    EXPECT_NE(contents->GetRenderProcessHost(), newtab->GetRenderProcessHost());
+
+  if (newtab_result)
+    *newtab_result = newtab;
+}
+
+void ExtensionBrowserTest::NavigateInRenderer(content::WebContents* contents,
+                                              const GURL& url) {
+  bool result = false;
+  ui_test_utils::WindowedNotificationObserver observer(
+      content::NOTIFICATION_LOAD_STOP,
+      content::NotificationService::AllSources());
+  ASSERT_TRUE(ui_test_utils::ExecuteJavaScriptAndExtractBool(
+      contents->GetRenderViewHost(), L"",
+      L"window.addEventListener('unload', function() {"
+      L"    window.domAutomationController.send(true);"
+      L"}, false);"
+      L"window.location = '" + UTF8ToWide(url.spec()) + L"';",
+      &result));
+  ASSERT_TRUE(result);
+  observer.Wait();
+  EXPECT_EQ(url, contents->GetController().GetLastCommittedEntry()->GetURL());
+}
+
 void ExtensionBrowserTest::Observe(
     int type,
     const content::NotificationSource& source,