This adds in the ability for Chrome to generate windows with snapshots of all...

chrome/browser/tab_contents/thumbnail_generator_unittest.cc

 // Copyright (c) 2009 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 "app/surface/transport_dib.h"
 #include "base/basictypes.h"
 #include "chrome/browser/renderer_host/backing_store_manager.h"
 #include "chrome/browser/renderer_host/mock_render_process_host.h"
 #include "chrome/browser/renderer_host/test/test_render_view_host.h"
 #include "chrome/browser/tab_contents/thumbnail_generator.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/test/testing_profile.h"
+#include "skia/ext/platform_canvas.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "skia/ext/platform_canvas.h"
 #include "third_party/skia/include/core/SkColorPriv.h"
 
 static const int kBitmapWidth = 100;
 static const int kBitmapHeight = 100;
 
 // TODO(brettw) enable this when GetThumbnailForBackingStore is implemented
 // for other platforms in thumbnail_generator.cc
 // #if defined(OS_WIN)
 // TODO(brettw) enable this on Windows after we clobber a build to see if the
 // failures of this on the buildbot can be resolved.
@@ skipping 109 matching lines @@
   SkBitmap result = generator_.GetThumbnailForRenderer(&widget_);
   EXPECT_TRUE(result.isNull());
 }
 
 // Tests basic thumbnail generation when a backing store is discarded.
 TEST_F(ThumbnailGeneratorTest, DiscardBackingStore) {
   // First set up a backing store and then discard it.
   SendPaint(TRANSPORT_BLACK);
   widget_.WasHidden();
   ASSERT_TRUE(BackingStoreManager::ExpireBackingStoreForTest(&widget_));
-  ASSERT_FALSE(widget_.GetBackingStore(false));
+  ASSERT_FALSE(widget_.GetBackingStore(false, false));
 
   // The thumbnail generator should have stashed a thumbnail of the page.
   SkBitmap result = generator_.GetThumbnailForRenderer(&widget_);
   ASSERT_FALSE(result.isNull());
   EXPECT_EQ(TRANSPORT_BLACK, ClassifyFirstPixel(result));
 }
 
 TEST_F(ThumbnailGeneratorTest, QuickShow) {
   // Set up a hidden widget with a black cached thumbnail and an expired
   // backing store.
   SendPaint(TRANSPORT_BLACK);
   widget_.WasHidden();
   ASSERT_TRUE(BackingStoreManager::ExpireBackingStoreForTest(&widget_));
-  ASSERT_FALSE(widget_.GetBackingStore(false));
+  ASSERT_FALSE(widget_.GetBackingStore(false, false));
 
   // Now show the widget and paint white.
   widget_.WasRestored();
   SendPaint(TRANSPORT_WHITE);
 
   // The black thumbnail should still be cached because it hasn't processed the
   // timer message yet.
   SkBitmap result = generator_.GetThumbnailForRenderer(&widget_);
   ASSERT_FALSE(result.isNull());
   EXPECT_EQ(TRANSPORT_BLACK, ClassifyFirstPixel(result));
 
   // Running the message loop will process the timer, which should expire the
   // cached thumbnail. Asking again should give us a new one computed from the
   // backing store.
   message_loop_.RunAllPending();
   result = generator_.GetThumbnailForRenderer(&widget_);
   ASSERT_FALSE(result.isNull());
   EXPECT_EQ(TRANSPORT_WHITE, ClassifyFirstPixel(result));
 }
 
 #endif