WTF/std normalization: replace WTF::Vector::last with ::back

third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositorTest.cpp

 // Copyright 2016 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 "platform/graphics/compositing/PaintArtifactCompositor.h"
 
 #include "base/test/test_simple_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "cc/layers/layer.h"
 #include "cc/test/fake_compositor_frame_sink.h"
@@ skipping 451 matching lines @@
   EXPECT_EQ(cc::ClipNode::ClipType::APPLIES_LOCAL_CLIP, innerClip->clip_type);
   EXPECT_TRUE(innerClip->layers_are_clipped);
   EXPECT_EQ(gfx::RectF(200, 200, 700, 100), innerClip->clip);
   EXPECT_EQ(outerClip->id, innerClip->parent_id);
 }
 
 TEST_F(PaintArtifactCompositorTestWithPropertyTrees, DeeplyNestedClips) {
   Vector<RefPtr<ClipPaintPropertyNode>> clips;
   for (unsigned i = 1; i <= 10; i++) {
     clips.append(ClipPaintPropertyNode::create(
-        clips.isEmpty() ? ClipPaintPropertyNode::root() : clips.last(),
+        clips.isEmpty() ? ClipPaintPropertyNode::root() : clips.back(),
         TransformPaintPropertyNode::root(),
         FloatRoundedRect(5 * i, 0, 100, 200 - 10 * i)));
   }
 
   TestPaintArtifact artifact;
   artifact
-      .chunk(TransformPaintPropertyNode::root(), clips.last(),
+      .chunk(TransformPaintPropertyNode::root(), clips.back(),
              EffectPaintPropertyNode::root())
       .rectDrawing(FloatRect(0, 0, 200, 200), Color::white);
   update(artifact.build());
 
   // Check the drawing layer.
   ASSERT_EQ(1u, contentLayerCount());
   const cc::Layer* drawingLayer = contentLayerAt(0);
   EXPECT_THAT(drawingLayer->GetPicture(),
               Pointee(drawsRectangle(FloatRect(0, 0, 200, 200), Color::white)));
   EXPECT_EQ(gfx::Transform(), drawingLayer->screen_space_transform());
@@ skipping 230 matching lines @@
             scrollTree.current_scroll_offset(contentLayerAt(1)->id()));
 
   EXPECT_TRUE(scrollNodeA.main_thread_scrolling_reasons &
               MainThreadScrollingReason::kHasBackgroundAttachmentFixedObjects);
   EXPECT_FALSE(scrollNodeB.main_thread_scrolling_reasons &
                MainThreadScrollingReason::kHasBackgroundAttachmentFixedObjects);
 }
 
 }  // namespace
 }  // namespace blink