Simplify platform_canvas.h by recognizing that PlatformCanvas does not actually extend

content/renderer/render_process_impl.cc

 // Copyright (c) 2012 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 "content/renderer/render_process_impl.h"
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
@@ skipping 133 matching lines @@
   delete dib;
 }
 
 // -----------------------------------------------------------------------------
 
 
 skia::PlatformCanvas* RenderProcessImpl::GetDrawingCanvas(
     TransportDIB** memory, const gfx::Rect& rect) {
   int width = rect.width();
   int height = rect.height();
-  const size_t stride = skia::PlatformCanvas::StrideForWidth(rect.width());
+  const size_t stride = skia::PlatformCanvasStrideForWidth(rect.width());
 #if defined(OS_LINUX) || defined(OS_OPENBSD)
   const size_t max_size = base::SysInfo::MaxSharedMemorySize();
 #else
   const size_t max_size = 0;
 #endif
 
   // If the requested size is too big, reduce the height. Ideally we might like
   // to reduce the width as well to make the size reduction more "balanced", but
   // it rarely comes up in practice.
   if ((max_size != 0) && (height * stride > max_size))
@@ skipping 78 matching lines @@
 void RenderProcessImpl::ClearTransportDIBCache() {
   for (size_t i = 0; i < arraysize(shared_mem_cache_); ++i) {
     if (shared_mem_cache_[i]) {
       FreeTransportDIB(shared_mem_cache_[i]);
       shared_mem_cache_[i] = NULL;
     }
   }
 }
 
 }  // namespace content