Clean up calls like "gfx::Rect(0, 0, size().width(), size().height()".

The caller can use the much shorter "gfx::Rect(size())", since gfx::Rect
has a constructor that just takes a Size.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/2204001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@48283 0039d316-1c4b-4281-b951-d872f2087c98
LRESULT AeroPeekWindow::OnDwmSendIconicLivePreviewBitmap(UINT message,
                                                         WPARAM wparam,
                                                         LPARAM lparam) {
  DCHECK(delegate_);

  SkBitmap preview;
  delegate_->GetTabPreview(tab_id_, &preview);

  ChromeThread::PostTask(ChromeThread::IO,
                         FROM_HERE,
                         new SendLivePreviewTask(hwnd(),
                                                 GetContentBounds(),
                                                 preview));
  return 0;
}

LRESULT AeroPeekWindow::OnDwmSendIconicLivePreviewBitmap(UINT message,
                                                         WPARAM wparam,
                                                         LPARAM lparam) {
  DCHECK(delegate_);

  SkBitmap preview;
  delegate_->GetTabPreview(tab_id_, &preview);

  ChromeThread::PostTask(ChromeThread::IO,
                         FROM_HERE,
                         new SendLivePreviewTask(hwnd(),
                                                 GetContentBounds(),
                                                 preview));
  return 0;
}
