Rename InvalidatePaintIfNeeded to drop deprecated IfNeeded suffix.

third_party/WebKit/Source/core/paint/BlockPaintInvalidator.h

 // 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.
 
 #ifndef BlockPaintInvalidator_h
 #define BlockPaintInvalidator_h
 
 #include "platform/graphics/PaintInvalidationReason.h"
 #include "platform/wtf/Allocator.h"
 
 namespace blink {
 
 struct PaintInvalidatorContext;
 class LayoutBlock;
 
 class BlockPaintInvalidator {
   STACK_ALLOCATED();
 
  public:
   BlockPaintInvalidator(const LayoutBlock& block) : block_(block) {}
 
   void ClearPreviousVisualRects();
-  PaintInvalidationReason InvalidatePaintIfNeeded(
-      const PaintInvalidatorContext&);
+  PaintInvalidationReason InvalidatePaint(const PaintInvalidatorContext&);
 
  private:
   const LayoutBlock& block_;
 };
 
 }  // namespace blink
 
 #endif