Cleanup: Remove more dead GTK code.

chrome/browser/ui/browser_browsertest.cc

Index: chrome/browser/ui/browser_browsertest.cc
===================================================================
--- chrome/browser/ui/browser_browsertest.cc	(revision 277810)
+++ chrome/browser/ui/browser_browsertest.cc	(working copy)
@@ -833,7 +833,7 @@
   alert->native_dialog()->CancelAppModalDialog();
 
   // Navigate to another url, and check that we get a "before unload" dialog.
-  GURL url2(std::string("about:blank"));
+  GURL url2(url::kAboutBlankURL);
   browser()->OpenURL(OpenURLParams(
       url2, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED, false));
 
@@ -894,7 +894,7 @@
   ui_test_utils::BrowserAddedObserver browser_added_observer;
   chrome::NewEmptyWindow(browser()->profile(), chrome::GetActiveDesktop());
   Browser* second_window = browser_added_observer.WaitForSingleNewBrowser();
-  ui_test_utils::NavigateToURL(second_window, GURL("about:blank"));
+  ui_test_utils::NavigateToURL(second_window, GURL(url::kAboutBlankURL));
 
   // Tell the application to quit. IDC_EXIT calls AttemptUserExit, which on
   // everything but ChromeOS allows unload handlers to block exit. On that
@@ -1409,7 +1409,6 @@
   ASSERT_NO_FATAL_FAILURE(dynamic_data_scope.Init());
   ASSERT_TRUE(test_server()->Start());
 
-  //std::string lang;
   LanguageDetectionDetails details;
 
   // Open a new tab with a page in English.
@@ -2134,10 +2133,9 @@
   EXPECT_EQ(title, title_watcher.WaitAndGetTitle());
 }
 
-// GTK doesn't use the Browser's fullscreen state.
 // TODO(linux_aura) http://crbug.com/163931
 // Mac disabled: http://crbug.com/169820
-#if !defined(TOOLKIT_GTK) && !defined(OS_MACOSX) && \
+#if !defined(OS_MACOSX) && \
     !(defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(USE_AURA))
 IN_PROC_BROWSER_TEST_F(BrowserTest, FullscreenBookmarkBar) {
 #if defined(OS_WIN) && defined(USE_ASH)
@@ -2184,9 +2182,9 @@
   }
 };
 
-#if defined(OS_MACOSX) || (defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(USE_AURA))
-// http://crbug.com/103912
-// TODO(linux_aura) http://crbug.com/163931
+#if defined(OS_MACOSX) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
+// Mac: http://crbug.com/103912
+// Linux: http://crbug.com/163931
 #define MAYBE_EnableKioskModeTest DISABLED_EnableKioskModeTest
 #else
 #define MAYBE_EnableKioskModeTest EnableKioskModeTest