Cleanup: Remove base::environment_vector and base::file_handle_mapping_vector to StudlyCaps.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/9429039

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@123438 0039d316-1c4b-4281-b951-d872f2087c98

• base/process_util.h[diff]
• base/process_util_posix.cc[diff]
• base/process_util_unittest.cc[diff]
• base/test/multiprocess_test.cc[diff]
• base/test/multiprocess_test.h[diff]
• chrome/app/nacl_fork_delegate_linux.cc[diff]
• chrome/app/nacl_fork_delegate_linux.h[diff]
• chrome/browser/chromeos/process_proxy/process_proxy.cc[diff]
• chrome/browser/chromeos/process_proxy/process_proxy.h[diff]
• chrome/browser/importer/external_process_importer_client.cc[diff]
• chrome/browser/importer/firefox_importer_unittest_utils_mac.cc[diff]
• chrome/browser/mac/relauncher.cc[diff]
• chrome/browser/nacl_host/nacl_process_host.cc[diff]
• chrome/browser/platform_util_linux.cc[diff]
• chrome/browser/printing/cloud_print/test/cloud_print_proxy_process_browsertest.cc[diff]
• chrome/browser/process_info_snapshot_mac_unittest.cc[diff]
• chrome/browser/shell_integration_linux.cc[diff]
• chrome/test/automation/proxy_launcher.cc[diff]
• content/browser/browser_child_process_host_impl.cc[diff]
• content/browser/browser_child_process_host_impl.h[diff]
• content/browser/child_process_launcher.cc[diff]
• content/browser/child_process_launcher.h[diff]
• content/browser/gpu/gpu_process_host.cc[diff]
• content/browser/gpu/gpu_process_host.h[diff]
• content/browser/plugin_process_host.cc[diff]
• content/browser/ppapi_plugin_process_host.cc[diff]
• content/browser/renderer_host/render_process_host_impl.cc[diff]
• content/browser/utility_process_host_impl.cc[diff]
• content/browser/utility_process_host_impl.h[diff]
• content/browser/worker_host/worker_process_host.cc[diff]
• content/browser/zygote_host_linux.cc[diff]
• content/public/browser/browser_child_process_host.h[diff]
• content/public/browser/utility_process_host.h[diff]
• ipc/ipc_tests.cc[diff]
• net/test/test_server_posix.cc[diff]