Blink LayoutTests: Add support for Fedora.

Recent versions of Fedora ship with PHP7, so the Apache configuration
flavors for RedHat don't work on Fedora. Given that Fedora tends to
change a lot quicker than RedHat, it makes sense to have a separate
Apache configuration flavor that can be adapted to changes without
worrying about breaking RedHat support.

Tested by running third_party/WebKit/Tools/Script/run-blink-httpd and
by running some LayoutTests.

Bug: 
Change-Id: I0e468e99832498ad426e1e97852bd4927c874483
Reviewed-on: https://chromium-review.googlesource.com/818644Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: Robert Ma <robertma@chromium.org>
Reviewed-by: Quinten Yearsley <qyearsley@chromium.org>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#523622}

third_party/WebKit/Tools/Scripts/apache_config/fedora-httpd-2.4.conf

+ServerTokens Prod
+ServerRoot "/etc/httpd"
+
+PidFile "/tmp/WebKit/httpd.pid"
+ScoreBoardFile "/tmp/WebKit/httpd.scoreboard"
+
+Timeout 300
+KeepAlive On
+# Setting this value too low may change header size sometimes making flakey tests.
+MaxKeepAliveRequests 0
+KeepAliveTimeout 9999
+
+MinSpareServers 1
+MaxSpareServers 5
+StartServers 1
+MaxClients 150
+MaxRequestsPerChild 100000
+
+LoadModule mpm_prefork_module modules/mod_mpm_prefork.so
+LoadModule unixd_module modules/mod_unixd.so
+LoadModule authz_core_module modules/mod_authz_core.so
+LoadModule authz_host_module modules/mod_authz_host.so
+LoadModule include_module modules/mod_include.so
+LoadModule log_config_module modules/mod_log_config.so
+LoadModule headers_module modules/mod_headers.so
+LoadModule ssl_module modules/mod_ssl.so
+LoadModule mime_module modules/mod_mime.so
+LoadModule asis_module modules/mod_asis.so
+LoadModule cgi_module modules/mod_cgi.so
+LoadModule env_module modules/mod_env.so
+LoadModule negotiation_module modules/mod_negotiation.so
+LoadModule actions_module modules/mod_actions.so
+LoadModule alias_module modules/mod_alias.so
+LoadModule rewrite_module modules/mod_rewrite.so
+Include /etc/httpd/conf.modules.d/*php*.conf
+LoadModule autoindex_module modules/mod_autoindex.so
+
+User apache
+Group apache
+
+ServerAdmin root@localhost
+ServerName 127.0.0.1
+
+UseCanonicalName On
+
+<Directory />
+    Options Indexes FollowSymLinks MultiViews ExecCGI Includes
+    AllowOverride All
+    Require all granted
+</Directory>
+
+AccessFileName .htaccess
+
+<Files ~ "^\.([Hh][Tt]|[Dd][Ss]_[Ss])">
+    Require all denied
+</Files>
+
+TypesConfig /etc/mime.types
+HostnameLookups Off
+
+PassEnv TMPDIR
+
+LogLevel warn
+LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
+LogFormat "%h %l %u %t \"%r\" %>s %b" common
+LogFormat "%{Referer}i -> %U" referer
+LogFormat "%{User-agent}i" agent
+
+ServerSignature On
+
+AddLanguage ca .ca
+AddLanguage cs .cz .cs
+AddLanguage da .dk
+AddLanguage de .de
+AddLanguage el .el
+AddLanguage en .en
+AddLanguage eo .eo
+AddLanguage es .es
+AddLanguage et .et
+AddLanguage fr .fr
+AddLanguage he .he
+AddLanguage hr .hr
+AddLanguage it .it
+AddLanguage ja .ja
+AddLanguage ko .ko
+AddLanguage ltz .ltz
+AddLanguage nl .nl
+AddLanguage nn .nn
+AddLanguage no .no
+AddLanguage pl .po
+AddLanguage pt .pt
+AddLanguage pt-BR .pt-br
+AddLanguage ru .ru
+AddLanguage sv .sv
+AddLanguage zh-CN .zh-cn
+AddLanguage zh-TW .zh-tw
+AddCharset Big5         .Big5    .big5
+AddCharset WINDOWS-1251 .cp-1251
+AddCharset CP866        .cp866
+AddCharset ISO-8859-5   .iso-ru
+AddCharset KOI8-R       .koi8-r
+AddCharset UCS-2        .ucs2
+AddCharset UCS-4        .ucs4
+AddCharset UTF-8        .utf8
+
+<IfModule mod_negotiation.c>
+    LanguagePriority en ca cs da de el eo es et fr he hr it ja ko ltz nl nn no pl pt pt-BR ru sv zh-CN zh-TW
+</IfModule>
+
+AddType application/x-tar .tgz
+
+AddEncoding x-compress .Z
+AddEncoding x-gzip .gz .tgz
+
+AddHandler cgi-script .cgi .pl
+
+AddType application/x-x509-ca-cert .crt
+AddType application/x-pkcs7-crl    .crl
+
+AddType text/html .shtml
+AddOutputFilter INCLUDES .shtml
+
+AddHandler send-as-is asis
+
+AddType application/x-httpd-php .php
+AddType application/x-httpd-php .bat
+AddType application/x-httpd-php-source .phps
+
+<IfModule mod_dir.c>
+    DirectoryIndex index.html index.php
+</IfModule>
+
+php_flag log_errors on
+php_flag short_open_tag on
+
+RewriteEngine On
+RewriteCond %{REQUEST_METHOD} ^TRACE
+RewriteRule .* - [F]
+
+<VirtualHost *:8443>
+    ServerName 127.0.0.1
+    SSLEngine On
+</VirtualHost>
+
+#
+# Apple-specific filesystem protection.
+#
+<Files "rsrc">
+    Require all denied
+</Files>
+
+<Directory  ~ ".*\.\.namedfork">
+    Require all denied
+</Directory>

third_party/WebKit/Tools/Scripts/webkitpy/common/system/platform_info.py

@@ -122,6 +122,9 @@ class PlatformInfo(object):
         if not self.is_linux():
             return None
 
+        # Fedora also has /etc/redhat-release, this check must go first.
+        if self._filesystem.exists('/etc/fedora-release'):
+            return 'fedora'
         if self._filesystem.exists('/etc/redhat-release'):
             return 'redhat'
         if self._filesystem.exists('/etc/debian_version'):

third_party/WebKit/Tools/Scripts/webkitpy/common/system/platform_info_unittest.py

@@ -168,15 +168,18 @@ class TestPlatformInfo(unittest.TestCase):
         with self.assertRaises(AssertionError):
             self.make_info(fake_sys('win32'), executive=fake_executive('6.1.1234'))
 
-    def _assert_file_implies_linux_distribution(self, file_path, distribution):
-        info = self.make_info(sys_module=fake_sys('linux2'), filesystem_module=MockFileSystem({file_path: ''}))
+    def _assert_files_imply_linux_distribution(self, file_paths, distribution):
+        fs_module = MockFileSystem({file_path: '' for file_path in file_paths})
+        info = self.make_info(sys_module=fake_sys('linux2'), filesystem_module=fs_module)
         self.assertEqual(info.linux_distribution(), distribution)
 
     def test_linux_distro_detection(self):
-        self._assert_file_implies_linux_distribution('/etc/arch-release', 'arch')
-        self._assert_file_implies_linux_distribution('/etc/debian_version', 'debian')
-        self._assert_file_implies_linux_distribution('/etc/redhat-release', 'redhat')
-        self._assert_file_implies_linux_distribution('/etc/mock-release', 'unknown')
+        self._assert_files_imply_linux_distribution(['/etc/arch-release'], 'arch')
+        self._assert_files_imply_linux_distribution(['/etc/debian_version'], 'debian')
+        self._assert_files_imply_linux_distribution(['/etc/fedora-release'], 'fedora')
+        self._assert_files_imply_linux_distribution(['/etc/fedora-release', '/etc/redhat-release'], 'fedora')
+        self._assert_files_imply_linux_distribution(['/etc/redhat-release'], 'redhat')
+        self._assert_files_imply_linux_distribution(['/etc/mock-release'], 'unknown')
 
     def test_display_name(self):
         info = self.make_info(fake_sys('darwin'))

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base.py

@@ -1483,8 +1483,8 @@ class Port(object):
         if self.host.platform.is_linux():
             distribution = self.host.platform.linux_distribution()
 
-            custom_configuration_distributions = ['arch', 'debian', 'redhat']
-            if distribution in custom_configuration_distributions:
+            custom_configurations = ['arch', 'debian', 'fedora', 'redhat']
+            if distribution in custom_configurations:
                 return '%s-httpd-%s.conf' % (distribution, self._apache_version())
 
         return 'apache2-httpd-' + self._apache_version() + '.conf'

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base_unittest.py

@@ -808,6 +808,7 @@ class PortTest(unittest.TestCase):
         self._assert_config_file_for_platform(port, 'linux', 'apache2-httpd-2.2.conf')
         self._assert_config_file_for_linux_distribution(port, 'arch', 'arch-httpd-2.2.conf')
         self._assert_config_file_for_linux_distribution(port, 'debian', 'debian-httpd-2.2.conf')
+        self._assert_config_file_for_linux_distribution(port, 'fedora', 'fedora-httpd-2.2.conf')
         self._assert_config_file_for_linux_distribution(port, 'slackware', 'apache2-httpd-2.2.conf')
         self._assert_config_file_for_linux_distribution(port, 'redhat', 'redhat-httpd-2.2.conf')