Refactoring for portability:
 - Move chrome/common/env_util to base/sys_info
 - Move chrome/common/rand_util to base/rand_util (new), simplify its public
   interface, and fix its implementation

Patch by Paweł Hajdan, Jr. <phajdan.jr@gmail.com>

http://codereview.chromium.org/4079


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@2697 0039d316-1c4b-4281-b951-d872f2087c98

• base/SConscript[diff]
• base/base.xcodeproj/project.pbxproj[diff]
• base/build/base.vcproj[diff]
• base/build/base_unittests.vcproj[diff]
• base/rand_util.cc[Added - diff]
• base/rand_util.h[Added - diff]
• base/rand_util_posix.cc[Added - diff]
• base/rand_util_unittest.cc[Added - diff]
• base/rand_util_win.cc[Added - diff]
• base/sys_info.h[diff]
• base/sys_info_posix.cc[diff]
• base/sys_info_unittest.cc[diff]
• base/sys_info_win.cc[diff]
• chrome/browser/browser_main.cc[diff]
• chrome/browser/cache_manager_host.cc[diff]
• chrome/browser/importer/importer_unittest.cc[diff]
• chrome/browser/metrics_log.cc[diff]
• chrome/browser/render_process_host.cc[diff]
• chrome/browser/render_process_host.h[diff]
• chrome/browser/safe_browsing/bloom_filter_unittest.cc[diff]
• chrome/browser/safe_browsing/protocol_manager.cc[diff]
• chrome/browser/views/bug_report_view.cc[diff]
• chrome/common/SConscript[diff]
• chrome/common/common.vcproj[diff]
• chrome/common/env_util.cc[Deleted - diff]
• chrome/common/env_util.h[Deleted - diff]
• chrome/common/logging_chrome.cc[diff]
• chrome/common/process_watcher.cc[diff]
• chrome/common/rand_util.cc[Deleted - diff]
• chrome/common/rand_util.h[Deleted - diff]
• chrome/renderer/renderer_main.cc[diff]
• chrome/test/automated_ui_tests/automated_ui_tests.cc[diff]
• chrome/test/selenium/selenium_test.cc[diff]