Replace uses of legacy SkBitmap::copyTo() API

chrome/renderer/chrome_render_frame_observer.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 "chrome/renderer/chrome_render_frame_observer.h"
 
 #include <stddef.h>
 #include <string.h>
 
 #include <limits>
@@ skipping 185 matching lines @@
   gfx::Size original_size;
   if (!context_node.IsNull() && context_node.IsElementNode()) {
     blink::WebImage image = context_node.To<WebElement>().ImageContents();
     original_size = image.Size();
     thumbnail = Downscale(image,
                           thumbnail_min_area_pixels,
                           thumbnail_max_size_pixels);
   }
 
   SkBitmap bitmap;
-  if (thumbnail.colorType() == kN32_SkColorType)
+  if (thumbnail.colorType() == kN32_SkColorType) {
     bitmap = thumbnail;
-  else
-    thumbnail.copyTo(&bitmap, kN32_SkColorType);
+  } else {
+    SkImageInfo info = thumbnail.info().makeColorType(kN32_SkColorType);
+    if (bitmap.tryAllocPixels(info)) {
+      thumbnail.readPixels(info, bitmap.getPixels(), bitmap.rowBytes(), 0, 0);
+    }
+  }
 
   std::vector<uint8_t> thumbnail_data;
   if (bitmap.getPixels()) {
     const int kDefaultQuality = 90;
     std::vector<unsigned char> data;
     if (gfx::JPEGCodec::Encode(
             reinterpret_cast<unsigned char*>(bitmap.getAddr32(0, 0)),
             gfx::JPEGCodec::FORMAT_SkBitmap, bitmap.width(), bitmap.height(),
             static_cast<int>(bitmap.rowBytes()), kDefaultQuality, &data)) {
       thumbnail_data.swap(data);
@@ skipping 139 matching lines @@
 
 void ChromeRenderFrameObserver::OnImageContextMenuRendererRequest(
     chrome::mojom::ImageContextMenuRendererRequest request) {
   image_context_menu_renderer_bindings_.AddBinding(this, std::move(request));
 }
 
 void ChromeRenderFrameObserver::OnThumbnailCapturerRequest(
     chrome::mojom::ThumbnailCapturerRequest request) {
   thumbnail_capturer_bindings_.AddBinding(this, std::move(request));
 }