Rename InvalidatePaintIfNeeded to drop deprecated IfNeeded suffix.

third_party/WebKit/Source/core/paint/HTMLCanvasPaintInvalidator.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 "core/paint/HTMLCanvasPaintInvalidator.h"
 
 #include "core/html/HTMLCanvasElement.h"
 #include "core/layout/LayoutHTMLCanvas.h"
 #include "core/paint/BoxPaintInvalidator.h"
 #include "core/paint/PaintInvalidator.h"
 
 namespace blink {
 
-PaintInvalidationReason HTMLCanvasPaintInvalidator::InvalidatePaintIfNeeded() {
+PaintInvalidationReason HTMLCanvasPaintInvalidator::InvalidatePaint() {
   PaintInvalidationReason reason =
-      BoxPaintInvalidator(html_canvas_, context_).InvalidatePaintIfNeeded();
+      BoxPaintInvalidator(html_canvas_, context_).InvalidatePaint();
 
   HTMLCanvasElement* element = toHTMLCanvasElement(html_canvas_.GetNode());
   if (element->IsDirty()) {
     element->DoDeferredPaintInvalidation();
     if (reason < kPaintInvalidationRectangle)
       reason = kPaintInvalidationRectangle;
   }
 
   return reason;
 }
 
 }  // namespace blink