Use SkJpegEncoder in gfx jpeg_codec

chrome/renderer/chrome_render_frame_observer.cc

Index: chrome/renderer/chrome_render_frame_observer.cc
diff --git a/chrome/renderer/chrome_render_frame_observer.cc b/chrome/renderer/chrome_render_frame_observer.cc
index a49d2e2f8da0a217b5cd9506a3dc3c8bc1d47275..2242cdba488d5c404ca80efb69888075fc4f2ef5 100644
--- a/chrome/renderer/chrome_render_frame_observer.cc
+++ b/chrome/renderer/chrome_render_frame_observer.cc
@@ -213,13 +213,11 @@ void ChromeRenderFrameObserver::RequestThumbnailForContextNode(
   }
 
   std::vector<uint8_t> thumbnail_data;
-  if (bitmap.getPixels()) {
+  SkPixmap pixmap;
+  if (bitmap.peekPixels(&pixmap)) {
     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)) {
+    if (gfx::JPEGCodec::Encode(pixmap, kDefaultQuality, &data)) {
       thumbnail_data.swap(data);
     }
   }