cc: Remove use of PassAs() and constructor-casting with scoped_ptr.

cc/test/test_web_graphics_context_3d.cc

 // 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 "cc/test/test_web_graphics_context_3d.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 484 matching lines @@
 void TestWebGraphicsContext3D::bufferData(GLenum target,
                                           GLsizeiptr size,
                                           const void* data,
                                           GLenum usage) {
   base::AutoLock lock(namespace_->lock);
   base::ScopedPtrHashMap<unsigned, Buffer>& buffers = namespace_->buffers;
   DCHECK_GT(buffers.count(bound_buffer_), 0u);
   DCHECK_EQ(target, buffers.get(bound_buffer_)->target);
   Buffer* buffer = buffers.get(bound_buffer_);
   if (context_lost_) {
-    buffer->pixels.reset();
+    buffer->pixels = nullptr;
     return;
   }
 
   size_t old_size = buffer->size;
 
   buffer->pixels.reset(new uint8[size]);
   buffer->size = size;
   if (data != NULL)
     memcpy(buffer->pixels.get(), data, size);
   if (buffer->target == GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM)
@@ skipping 18 matching lines @@
 
   return buffers.get(bound_buffer_)->pixels.get();
 }
 
 GLboolean TestWebGraphicsContext3D::unmapBufferCHROMIUM(
     GLenum target) {
   base::AutoLock lock(namespace_->lock);
   base::ScopedPtrHashMap<unsigned, Buffer>& buffers = namespace_->buffers;
   DCHECK_GT(buffers.count(bound_buffer_), 0u);
   DCHECK_EQ(target, buffers.get(bound_buffer_)->target);
-  buffers.get(bound_buffer_)->pixels.reset();
+  buffers.get(bound_buffer_)->pixels = nullptr;
   return true;
 }
 
 GLuint TestWebGraphicsContext3D::createImageCHROMIUM(GLsizei width,
                                                      GLsizei height,
                                                      GLenum internalformat,
                                                      GLenum usage) {
   DCHECK_EQ(GL_RGBA8_OES, static_cast<int>(internalformat));
   GLuint image_id = NextImageId();
   base::AutoLock lock(namespace_->lock);
@@ skipping 171 matching lines @@
 
 TestWebGraphicsContext3D::Buffer::Buffer() : target(0), size(0) {}
 
 TestWebGraphicsContext3D::Buffer::~Buffer() {}
 
 TestWebGraphicsContext3D::Image::Image() {}
 
 TestWebGraphicsContext3D::Image::~Image() {}
 
 }  // namespace cc