Add debug to WallpaperManagerBrowserTest.DisplayChange test.

chrome/browser/chromeos/login/wallpaper_manager_browsertest.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/chromeos/login/wallpaper_manager.h"
 
 #include "ash/ash_resources/grit/ash_resources.h"
 #include "ash/ash_switches.h"
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/desktop_background/desktop_background_controller_observer.h"
@@ skipping 77 matching lines @@
   virtual void CleanUpOnMainThread() OVERRIDE {
     controller_ = NULL;
   }
 
   // Update the display configuration as given in |display_specs|.  See
   // ash::test::DisplayManagerTestApi::UpdateDisplay for more details.
   void UpdateDisplay(const std::string& display_specs) {
     ash::test::DisplayManagerTestApi display_manager_test_api(
         ash::Shell::GetInstance()->display_manager());
     display_manager_test_api.UpdateDisplay(display_specs);
+    LOG(ERROR) << "UpdateDisplay(display_specs='" << display_specs
+               << "') done.";
+    WallpaperManager::GetAppropriateResolutionForTesting();
   }
 
   void WaitAsyncWallpaperLoadStarted() {
     base::RunLoop().RunUntilIdle();
   }
 
   void WaitAsyncWallpaperLoadFinished() {
     base::RunLoop().RunUntilIdle();
     while (WallpaperManager::Get()->loading_.size()) {
       base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(100));
@@ skipping 651 matching lines @@
     return old;
   }
 
  private:
   int update_wallpaper_count_;
   WallpaperManager* wallpaper_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(TestObserver);
 };
 
-// Disabled due to flaky failures. crbug.com/362847
-IN_PROC_BROWSER_TEST_P(WallpaperManagerBrowserTest, DISABLED_DisplayChange) {
+IN_PROC_BROWSER_TEST_P(WallpaperManagerBrowserTest, DisplayChange) {
   // TODO(derat|oshima|bshe): Host windows can't be resized on Win8.
   if (!ash::test::AshTestHelper::SupportsHostWindowResize())
     return;
 
   TestObserver observer(WallpaperManager::Get());
 
   // Set the wallpaper to ensure that UpdateWallpaper() will be called when the
   // display configuration changes.
   gfx::ImageSkia image = CreateTestImage(640, 480, kCustomWallpaperColor);
   controller_->SetWallpaperImage(image, WALLPAPER_LAYOUT_STRETCH);
 
   // Small wallpaper images should be used for configurations less than or
   // equal to kSmallWallpaperMaxWidth by kSmallWallpaperMaxHeight, even if
   // multiple displays are connected.
   UpdateDisplay("800x600");
   WaitAsyncWallpaperLoadFinished();
+  WallpaperManager::GetAppropriateResolutionForTesting();
   EXPECT_EQ(WallpaperManager::WALLPAPER_RESOLUTION_SMALL,
             WallpaperManager::Get()->GetAppropriateResolution());
   EXPECT_EQ(0, observer.GetUpdateWallpaperCountAndReset());
 
   UpdateDisplay("800x600,800x600");
   WaitAsyncWallpaperLoadFinished();
+  WallpaperManager::GetAppropriateResolutionForTesting();
   EXPECT_EQ(WallpaperManager::WALLPAPER_RESOLUTION_SMALL,
             WallpaperManager::Get()->GetAppropriateResolution());
   EXPECT_EQ(0, observer.GetUpdateWallpaperCountAndReset());
 
   UpdateDisplay("1366x800");
   WaitAsyncWallpaperLoadFinished();
+  WallpaperManager::GetAppropriateResolutionForTesting();
   EXPECT_EQ(WallpaperManager::WALLPAPER_RESOLUTION_SMALL,
             WallpaperManager::Get()->GetAppropriateResolution());
   EXPECT_EQ(1, observer.GetUpdateWallpaperCountAndReset());
 
   // At larger sizes, large wallpapers should be used.
   UpdateDisplay("1367x800");
   WaitAsyncWallpaperLoadFinished();
+  WallpaperManager::GetAppropriateResolutionForTesting();
   EXPECT_EQ(WallpaperManager::WALLPAPER_RESOLUTION_LARGE,
             WallpaperManager::Get()->GetAppropriateResolution());
   EXPECT_EQ(1, observer.GetUpdateWallpaperCountAndReset());
 
   UpdateDisplay("1367x801");
   WaitAsyncWallpaperLoadFinished();
+  WallpaperManager::GetAppropriateResolutionForTesting();
   EXPECT_EQ(WallpaperManager::WALLPAPER_RESOLUTION_LARGE,
             WallpaperManager::Get()->GetAppropriateResolution());
   EXPECT_EQ(1, observer.GetUpdateWallpaperCountAndReset());
 
   UpdateDisplay("2560x1700");
   WaitAsyncWallpaperLoadFinished();
+  WallpaperManager::GetAppropriateResolutionForTesting();
   EXPECT_EQ(WallpaperManager::WALLPAPER_RESOLUTION_LARGE,
             WallpaperManager::Get()->GetAppropriateResolution());
   EXPECT_EQ(1, observer.GetUpdateWallpaperCountAndReset());
 
   // Rotated smaller screen may use larger image.
   UpdateDisplay("800x600/r");
   WaitAsyncWallpaperLoadFinished();
+  WallpaperManager::GetAppropriateResolutionForTesting();
   EXPECT_EQ(WallpaperManager::WALLPAPER_RESOLUTION_SMALL,
             WallpaperManager::Get()->GetAppropriateResolution());
   EXPECT_EQ(1, observer.GetUpdateWallpaperCountAndReset());
 
   UpdateDisplay("800x600/r,800x600");
   WaitAsyncWallpaperLoadFinished();
+  WallpaperManager::GetAppropriateResolutionForTesting();
   EXPECT_EQ(WallpaperManager::WALLPAPER_RESOLUTION_SMALL,
             WallpaperManager::Get()->GetAppropriateResolution());
   EXPECT_EQ(1, observer.GetUpdateWallpaperCountAndReset());
   UpdateDisplay("1366x800/r");
+  WallpaperManager::GetAppropriateResolutionForTesting();
   WaitAsyncWallpaperLoadFinished();
   EXPECT_EQ(WallpaperManager::WALLPAPER_RESOLUTION_LARGE,
             WallpaperManager::Get()->GetAppropriateResolution());
   EXPECT_EQ(1, observer.GetUpdateWallpaperCountAndReset());
 
   // Max display size didn't chagne.
   UpdateDisplay("900x800/r,400x1366");
+  WallpaperManager::GetAppropriateResolutionForTesting();
   WaitAsyncWallpaperLoadFinished();
   EXPECT_EQ(0, observer.GetUpdateWallpaperCountAndReset());
 }
 
 // Test that WallpaperManager loads the appropriate wallpaper
 // images as specified via command-line flags in various situations.
 // Splitting these into separate tests avoids needing to run animations.
 // TODO(derat): Combine these into a single test
 IN_PROC_BROWSER_TEST_P(WallpaperManagerBrowserTest, SmallDefaultWallpaper) {
   if (!ash::test::AshTestHelper::SupportsMultipleDisplays())
@@ skipping 86 matching lines @@
       ImageIsNearColor(controller_->GetWallpaper(), kCustomWallpaperColor));
 
   WallpaperManager::Get()->SetDefaultWallpaperNow(std::string());
   WaitAsyncWallpaperLoadFinished();
 
   EXPECT_TRUE(
       ImageIsNearColor(controller_->GetWallpaper(), kSmallWallpaperColor));
 }
 
 }  // namespace chromeos