Cleanup in chrome/browser

- make more things const
- remove unreferenced declaration of GetGoButton
- fix indentation in one place

Review URL: http://codereview.chromium.org/53053

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@12475 0039d316-1c4b-4281-b951-d872f2087c98

• base/process_util.h[diff]
• base/process_util_linux.cc[diff]
• base/process_util_mac.mm[diff]
• base/process_util_win.cc[diff]
• chrome/browser/browser.cc[diff]
• chrome/browser/browser.h[diff]
• chrome/browser/tabs/tab_strip_model.cc[diff]
• chrome/browser/tabs/tab_strip_model.h[diff]
• chrome/browser/task_manager.cc[diff]
• chrome/browser/task_manager.h[diff]
• chrome/browser/webdata/web_data_service.cc[diff]
• chrome/browser/webdata/web_data_service.h[diff]
• chrome/browser/webdata/web_database.cc[diff]
• chrome/browser/webdata/web_database.h[diff]