Remove VideoDecoder::natural_size() & added VideoFrame::natural_size().

media/tools/shader_bench/gpu_color_painter.cc

Index: media/tools/shader_bench/gpu_color_painter.cc
diff --git a/media/tools/shader_bench/gpu_color_painter.cc b/media/tools/shader_bench/gpu_color_painter.cc
index 2c81d2b80f1f183e5fbf7ac296c13f565f300949..3811024b407c098e4fd935c8f45d6c691f4e36e0 100644
--- a/media/tools/shader_bench/gpu_color_painter.cc
+++ b/media/tools/shader_bench/gpu_color_painter.cc
@@ -106,9 +106,9 @@ void GPUColorWithLuminancePainter::Paint(
     scoped_refptr<media::VideoFrame> video_frame) {
   for (unsigned int i = 0; i < kNumYUVPlanes; ++i) {
     unsigned int width = (i == media::VideoFrame::kYPlane) ?
-        video_frame->width() : video_frame->width() / 2;
+        video_frame->size().width() : video_frame->size().width() / 2;
     unsigned int height = (i == media::VideoFrame::kYPlane) ?
-        video_frame->height() : video_frame->height() / 2;
+        video_frame->size().height() : video_frame->size().height() / 2;
     glBindTexture(GL_TEXTURE_2D, textures_[i]);
     glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,
                     GL_LUMINANCE, GL_UNSIGNED_BYTE, video_frame->data(i));