WTF/std normalization: replace WTF::Vector::first() with ::front()

third_party/WebKit/Source/modules/canvas2d/BaseRenderingContext2D.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 "modules/canvas2d/BaseRenderingContext2D.h"
 
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/css/cssom/CSSURLImageValue.h"
@@ skipping 103 matching lines @@
       while (--stackSize)
         skCanvas->restore();
     }
   }
 }
 
 void BaseRenderingContext2D::reset() {
   validateStateStack();
   unwindStateStack();
   m_stateStack.resize(1);
-  m_stateStack.first() = CanvasRenderingContext2DState::create();
+  m_stateStack.front() = CanvasRenderingContext2DState::create();
   m_path.clear();
   if (SkCanvas* c = existingDrawingCanvas()) {
     // The canvas should always have an initial/unbalanced save frame, which
     // we use to reset the top level matrix and clip here.
     DCHECK_EQ(c->getSaveCount(), 2);
     c->restore();
     c->save();
     DCHECK(c->getTotalMatrix().isIdentity());
 #if DCHECK_IS_ON()
     SkIRect clipBounds;
@@ skipping 1879 matching lines @@
       ExpensiveCanvasHeuristicParameters::ShadowFixedCost[index] *
           m_usageCounters.numBlurredShadows +
       ExpensiveCanvasHeuristicParameters::
               ShadowVariableCostPerAreaTimesShadowBlurSquared[index] *
           m_usageCounters.boundingBoxAreaTimesShadowBlurSquared;
 
   return basicCostOfDrawCalls + fillTypeAdjustment + shadowAdjustment;
 }
 
 }  // namespace blink