Don't show rotation change notification in tablet mode unless it's changed by user.

ash/system/screen_layout_observer_unittest.cc

 // Copyright 2013 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 "ash/system/screen_layout_observer.h"
 
 #include "ash/shell.h"
 #include "ash/strings/grit/ash_strings.h"
 #include "ash/system/devicetype_utils.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/test_system_tray_delegate.h"
+#include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/display/display.h"
 #include "ui/display/display_layout_builder.h"
 #include "ui/display/manager/display_manager.h"
 #include "ui/message_center/message_center.h"
 #include "ui/message_center/notification.h"
@@ skipping 425 matching lines @@
 
   // The user source.
   display_manager()->SetDisplayRotation(primary_id,
                                         display::Display::ROTATE_180,
                                         display::Display::ROTATION_SOURCE_USER);
   EXPECT_EQ(l10n_util::GetStringFUTF16(
                 IDS_ASH_STATUS_TRAY_DISPLAY_ROTATED, GetFirstDisplayName(),
                 l10n_util::GetStringUTF16(
                     IDS_ASH_STATUS_TRAY_DISPLAY_ORIENTATION_180)),
             GetDisplayNotificationAdditionalText());
+
+  // The active source.
+  display_manager()->SetDisplayRotation(
+      primary_id, display::Display::ROTATE_270,
+      display::Display::ROTATION_SOURCE_ACTIVE);
+  EXPECT_EQ(l10n_util::GetStringFUTF16(
+                IDS_ASH_STATUS_TRAY_DISPLAY_ROTATED, GetFirstDisplayName(),
+                l10n_util::GetStringUTF16(
+                    IDS_ASH_STATUS_TRAY_DISPLAY_ORIENTATION_270)),
+            GetDisplayNotificationAdditionalText());
+
+  // Switch to Tablet
+  Shell::Get()->maximize_mode_controller()->EnableMaximizeModeWindowManager(
+      true);
+
+  // The accelerometer source.
+  display_manager()->SetDisplayRotation(
+      primary_id, display::Display::ROTATE_90,
+      display::Display::ROTATION_SOURCE_ACCELEROMETER);
+  EXPECT_TRUE(GetDisplayNotificationText().empty());
+
+  // The user source.
+  display_manager()->SetDisplayRotation(primary_id,
+                                        display::Display::ROTATE_180,
+                                        display::Display::ROTATION_SOURCE_USER);
+  EXPECT_EQ(l10n_util::GetStringFUTF16(
+                IDS_ASH_STATUS_TRAY_DISPLAY_ROTATED, GetFirstDisplayName(),
+                l10n_util::GetStringUTF16(
+                    IDS_ASH_STATUS_TRAY_DISPLAY_ORIENTATION_180)),
+            GetDisplayNotificationAdditionalText());
+
+  // The active source.
+  display_manager()->SetDisplayRotation(
+      primary_id, display::Display::ROTATE_270,
+      display::Display::ROTATION_SOURCE_ACTIVE);
   EXPECT_TRUE(GetDisplayNotificationText().empty());
 }
 
 }  // namespace ash