[ChromeOS] Do not send the memory pressure notification from chrome to renderers

chrome/browser/memory/tab_manager_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/memory/tab_manager.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 415 matching lines @@
   test_contents->SetLastActiveTime(new_last_active_time);
   EXPECT_EQ(new_last_active_time, test_contents->GetLastActiveTime());
 
   WebContents* null_contents = tab_manager.DiscardWebContentsAt(1, &tabstrip);
   EXPECT_EQ(new_last_active_time, null_contents->GetLastActiveTime());
 
   tabstrip.CloseAllTabs();
   EXPECT_TRUE(tabstrip.empty());
 }
 
+// ChildProcessNotification is disabled on ChromOS. crbug.com/588172.
+#if !defined(OS_CHROMEOS)

[sky, 2016/04/04 23:46:35]

Can you conditionally run the test? By that I mean rename test to
MAYBE_ChildProcessNotifications and for chromeos map it to
DISABLED_ChildProcessNotifications?

[oshima, 2016/04/04 23:49:25]

Done.

+
 namespace {
 
 using MemoryPressureLevel = base::MemoryPressureListener::MemoryPressureLevel;
 
 // Function that always indicates the absence of memory pressure.
 MemoryPressureLevel ReturnNoPressure() {
   return base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE;
 }
 
 // Function that simply parrots back an externally specified memory pressure
@@ skipping 138 matching lines @@
   EXPECT_FALSE(tm.under_memory_pressure_);
   EXPECT_EQ(0u, task_runner->size());
   EXPECT_EQ(0u, tm.notified_renderers_.size());
 
 
   // Clean up the tabstrip.
   tabstrip.CloseAllTabs();
   ASSERT_TRUE(tabstrip.empty());
 }
 
+#endif
+
 }  // namespace memory