Can I make like this :
Under KDE4? How?
Does KDE4 have left side buttons?
If so does "Settings > Options > Personal Stuff > Use System Title Bars" not work.
Sorry that I obviously don't have KDE4 but want to mention this setting in case it helps.
Chromium does not use the KDE windows decorator. Therefore, this configuration must be made in chromium, or if not as option available in the source code of chromium. Probably using a different theme might help.