Enable TabManager on Linux

chrome/browser/memory/tab_manager_browsertest.cc

Index: chrome/browser/memory/tab_manager_browsertest.cc
diff --git a/chrome/browser/memory/tab_manager_browsertest.cc b/chrome/browser/memory/tab_manager_browsertest.cc
index 4b0dbedc9d45172b44df9cadaccd476c9a9e3252..80d96a94ae302fc9fb0e7274050a75c078be0933 100644
--- a/chrome/browser/memory/tab_manager_browsertest.cc
+++ b/chrome/browser/memory/tab_manager_browsertest.cc
@@ -28,7 +28,7 @@
 
 using content::OpenURLParams;
 
-#if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_CHROMEOS)
+#if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_CHROMEOS)
 
 namespace memory {
 
@@ -181,6 +181,9 @@ IN_PROC_BROWSER_TEST_F(TabManagerTest, TabManagerBasics) {
   EXPECT_TRUE(chrome::CanGoForward(browser()));
 }
 
+// On Linux, a memory pressure listener is not implemented yet.
+#if !defined(OS_LINUX)

[sky, 2016/04/21 16:59:18]

What about chromeos?

[hajimehoshi, 2016/04/22 08:05:48]

Done.

+
 // Test that the MemoryPressureListener event is properly triggering a tab
 // discard upon |MEMORY_PRESSURE_LEVEL_CRITICAL| event.
 IN_PROC_BROWSER_TEST_F(TabManagerTest, OomPressureListener) {
@@ -231,6 +234,8 @@ IN_PROC_BROWSER_TEST_F(TabManagerTest, OomPressureListener) {
   EXPECT_TRUE(tab_manager->recent_tab_discard());
 }
 
+#endif
+
 IN_PROC_BROWSER_TEST_F(TabManagerTest, InvalidOrEmptyURL) {
   TabManager* tab_manager = g_browser_process->GetTabManager();
   ASSERT_TRUE(tab_manager);