Remove dependency on ui::ScaleFactor from ui/gfx

chrome/browser/thumbnails/render_widget_snapshot_taker_unittest.cc

 // Copyright (c) 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 "chrome/browser/thumbnails/render_widget_snapshot_taker.h"
 
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 
 class RenderWidgetSnapshotTakerTest : public ChromeRenderViewHostTestHarness {
  public:
@@ skipping 57 matching lines @@
   RenderWidgetSnapshotTaker snapshot_taker;
   const gfx::Size size(100, 100);
   snapshot_taker.AskForSnapshot(
       rvh(),
       base::Bind(&RenderWidgetSnapshotTakerTest::SnapshotReady,
                  base::Unretained(this)),
       size,
       size);
   EXPECT_EQ(1U, snapshot_taker.callback_map_.size());
   const int sequence_num = 1;
-  const gfx::Size size2(200, 200);
+  // Ensure this is bigger than the max scale factor X the size.
+  const gfx::Size size2(300, 300);
   snapshot_taker.WidgetDidReceivePaintAtSizeAck(
       content::RenderViewHostTestHarness::rvh(),
       sequence_num,
       size2);
   EXPECT_FALSE(snapshot_taker.callback_map_.empty());
   EXPECT_FALSE(snapshot_ready_called());
 }