repairs CopyFromCompositingSurface in HighDPI

This CL removes the DIP=>Pixel transform in
DelegatedFrameHost::CopyFromCompositingSurface(), because said
transformation seems to be happening later in the copy logic
and is currently being applied twice.

BUG=397708

Review URL: https://codereview.chromium.org/421293002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@286414 0039d316-1c4b-4281-b951-d872f2087c98
void DelegatedFrameHost::DidReceiveFrameFromRenderer() {
  if (frame_subscriber() && CanCopyToVideoFrame()) {
    const base::TimeTicks present_time = base::TimeTicks::Now();
    scoped_refptr<media::VideoFrame> frame;
    RenderWidgetHostViewFrameSubscriber::DeliverFrameCallback callback;
    if (frame_subscriber()->ShouldCaptureFrame(present_time,
                                               &frame, &callback)) {
      CopyFromCompositingSurfaceToVideoFrame(
          gfx::Rect(current_frame_size_in_dip_),
          frame,
          base::Bind(callback, present_time));
    }
  }
}

void DelegatedFrameHost::DidReceiveFrameFromRenderer() {
  if (frame_subscriber() && CanCopyToVideoFrame()) {
    const base::TimeTicks present_time = base::TimeTicks::Now();
    scoped_refptr<media::VideoFrame> frame;
    RenderWidgetHostViewFrameSubscriber::DeliverFrameCallback callback;
    if (frame_subscriber()->ShouldCaptureFrame(present_time,
                                               &frame, &callback)) {
      CopyFromCompositingSurfaceToVideoFrame(
          gfx::Rect(current_frame_size_in_dip_),
          frame,
          base::Bind(callback, present_time));
    }
  }
}
