Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/core/frame/ImageBitmap.cpp

 // Copyright 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 "config.h"
 #include "core/frame/ImageBitmap.h"
 
 #include "core/html/HTMLCanvasElement.h"
 #include "core/html/HTMLVideoElement.h"
 #include "core/html/ImageData.h"
@@ skipping 12 matching lines @@
     return IntRect(min(rect.x(), rect.maxX()),
         min(rect.y(), rect.maxY()),
         max(rect.width(), -rect.width()),
         max(rect.height(), -rect.height()));
 }
 
 static inline PassRefPtr<Image> cropImage(Image* image, const IntRect& cropRect)
 {
     IntRect intersectRect = intersection(IntRect(IntPoint(), image->size()), cropRect);
     if (!intersectRect.width() || !intersectRect.height())
-        return 0;
+        return nullptr;
 
     SkBitmap cropped;
     image->nativeImageForCurrentFrame()->bitmap().extractSubset(&cropped, intersectRect);
     return BitmapImage::create(NativeImageSkia::create(cropped));
 }
 
 ImageBitmap::ImageBitmap(HTMLImageElement* image, const IntRect& cropRect)
     : m_imageElement(image)
-    , m_bitmap(0)
+    , m_bitmap(nullptr)
     , m_cropRect(cropRect)
 {
     IntRect srcRect = intersection(cropRect, IntRect(0, 0, image->width(), image->height()));
     m_bitmapRect = IntRect(IntPoint(max(0, -cropRect.x()), max(0, -cropRect.y())), srcRect.size());
     m_bitmapOffset = srcRect.location();
 
     if (!srcRect.width() || !srcRect.height())
-        m_imageElement = 0;
+        m_imageElement = nullptr;
     else
         m_imageElement->addClient(this);
 
     ScriptWrappable::init(this);
 }
 
 ImageBitmap::ImageBitmap(HTMLVideoElement* video, const IntRect& cropRect)
-    : m_imageElement(0)
+    : m_imageElement(nullptr)
     , m_cropRect(cropRect)
     , m_bitmapOffset(IntPoint())
 {
     IntRect videoRect = IntRect(IntPoint(), video->player()->naturalSize());
     IntRect srcRect = intersection(cropRect, videoRect);
     IntRect dstRect(IntPoint(), srcRect.size());
 
     OwnPtr<ImageBuffer> buf = ImageBuffer::create(videoRect.size());
     if (!buf)
         return;
     GraphicsContext* c = buf->context();
     c->clip(dstRect);
     c->translate(-srcRect.x(), -srcRect.y());
     video->paintCurrentFrameInContext(c, videoRect);
     m_bitmap = buf->copyImage(DontCopyBackingStore);
     m_bitmapRect = IntRect(IntPoint(max(0, -cropRect.x()), max(0, -cropRect.y())), srcRect.size());
 
     ScriptWrappable::init(this);
 }
 
 ImageBitmap::ImageBitmap(HTMLCanvasElement* canvas, const IntRect& cropRect)
-    : m_imageElement(0)
+    : m_imageElement(nullptr)
     , m_cropRect(cropRect)
     , m_bitmapOffset(IntPoint())
 {
     CanvasRenderingContext* sourceContext = canvas->renderingContext();
     if (sourceContext && sourceContext->is3d())
         sourceContext->paintRenderingResultsToCanvas();
 
     IntRect srcRect = intersection(cropRect, IntRect(IntPoint(), canvas->size()));
     m_bitmapRect = IntRect(IntPoint(max(0, -cropRect.x()), max(0, -cropRect.y())), srcRect.size());
     m_bitmap = cropImage(canvas->buffer()->copyImage(CopyBackingStore).get(), cropRect);
 
     ScriptWrappable::init(this);
 }
 
 ImageBitmap::ImageBitmap(ImageData* data, const IntRect& cropRect)
-    : m_imageElement(0)
+    : m_imageElement(nullptr)
     , m_cropRect(cropRect)
     , m_bitmapOffset(IntPoint())
 {
     IntRect srcRect = intersection(cropRect, IntRect(IntPoint(), data->size()));
 
     OwnPtr<ImageBuffer> buf = ImageBuffer::create(data->size());
     if (!buf)
         return;
     if (srcRect.width() > 0 && srcRect.height() > 0)
         buf->putByteArray(Premultiplied, data->data(), data->size(), srcRect, IntPoint(min(0, -cropRect.x()), min(0, -cropRect.y())));
 
     m_bitmap = buf->copyImage(DontCopyBackingStore);
     m_bitmapRect = IntRect(IntPoint(max(0, -cropRect.x()), max(0, -cropRect.y())),  srcRect.size());
 
     ScriptWrappable::init(this);
 }
 
 ImageBitmap::ImageBitmap(ImageBitmap* bitmap, const IntRect& cropRect)
     : m_imageElement(bitmap->imageElement())
-    , m_bitmap(0)
+    , m_bitmap(nullptr)
     , m_cropRect(cropRect)
     , m_bitmapOffset(IntPoint())
 {
     IntRect oldBitmapRect = bitmap->bitmapRect();
     IntRect srcRect = intersection(cropRect, oldBitmapRect);
     m_bitmapRect = IntRect(IntPoint(max(0, oldBitmapRect.x() - cropRect.x()), max(0, oldBitmapRect.y() - cropRect.y())), srcRect.size());
 
     if (m_imageElement) {
         m_imageElement->addClient(this);
         m_bitmapOffset = srcRect.location();
     } else if (bitmap->bitmapImage()) {
         IntRect adjustedCropRect(IntPoint(cropRect.x() -oldBitmapRect.x(), cropRect.y() - oldBitmapRect.y()), cropRect.size());
         m_bitmap = cropImage(bitmap->bitmapImage().get(), adjustedCropRect);
     }
 
     ScriptWrappable::init(this);
 }
 
 ImageBitmap::ImageBitmap(Image* image, const IntRect& cropRect)
-    : m_imageElement(0)
+    : m_imageElement(nullptr)
     , m_cropRect(cropRect)
 {
     IntRect srcRect = intersection(cropRect, IntRect(IntPoint(), image->size()));
     m_bitmap = cropImage(image, cropRect);
     m_bitmapRect = IntRect(IntPoint(max(0, -cropRect.x()), max(0, -cropRect.y())),  srcRect.size());
 
     ScriptWrappable::init(this);
 }
 
 ImageBitmap::~ImageBitmap()
@@ skipping 35 matching lines @@
 PassRefPtr<ImageBitmap> ImageBitmap::create(Image* image, const IntRect& cropRect)
 {
     IntRect normalizedCropRect = normalizeRect(cropRect);
     return adoptRef(new ImageBitmap(image, normalizedCropRect));
 }
 
 void ImageBitmap::notifyImageSourceChanged()
 {
     m_bitmap = cropImage(m_imageElement->cachedImage()->image(), m_cropRect);
     m_bitmapOffset = IntPoint();
-    m_imageElement = 0;
+    m_imageElement = nullptr;
 }
 
 PassRefPtr<Image> ImageBitmap::bitmapImage() const
 {
     ASSERT((m_imageElement || m_bitmap || !m_bitmapRect.width() || !m_bitmapRect.height()) && (!m_imageElement || !m_bitmap));
     if (m_imageElement)
         return m_imageElement->cachedImage()->image();
     return m_bitmap;
 }
 
 }