Point to build requirements page when there is a dependency check failure.

BUG=None

Review URL: https://codereview.chromium.org/196413027

git-svn-id: svn://svn.chromium.org/blink/trunk@169952 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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

@@ -412,6 +412,8 @@ class AndroidPort(base.Port):
     # Android has aac and mp3 codecs built in.
     PORT_HAS_AUDIO_CODECS_BUILT_IN = True
 
+    BUILD_REQUIREMENTS_URL = 'https://code.google.com/p/chromium/wiki/AndroidBuildInstructions'
+
     def __init__(self, host, port_name, **kwargs):
         super(AndroidPort, self).__init__(host, port_name, **kwargs)
 

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

@@ -130,6 +130,9 @@ class Port(object):
 
     SUPPORTED_VERSIONS = []
 
+    # URL to the build requirements page.
+    BUILD_REQUIREMENTS_URL = ''
+
     @classmethod
     def latest_platform_fallback_path(cls):
         return cls.FALLBACK_PATHS[cls.SUPPORTED_VERSIONS[-1]]
@@ -383,6 +386,10 @@ class Port(object):
             _log.error('To override, invoke with --nocheck-sys-deps')
             _log.error('')
             _log.error(output)
+            if self.BUILD_REQUIREMENTS_URL is not '':
+                _log.error('')
+                _log.error('For complete build requirements, please see:')
+                _log.error(self.BUILD_REQUIREMENTS_URL)
             return test_run_results.SYS_DEPS_EXIT_STATUS
         return test_run_results.OK_EXIT_STATUS
 

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

@@ -50,6 +50,8 @@ class LinuxPort(base.Port):
 
     DEFAULT_BUILD_DIRECTORIES = ('out',)
 
+    BUILD_REQUIREMENTS_URL = 'https://code.google.com/p/chromium/wiki/LinuxBuildInstructions'
+
     @classmethod
     def _determine_driver_path_statically(cls, host, options):
         config_object = config.Config(host.executive, host.filesystem)

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

@@ -59,6 +59,8 @@ class MacPort(base.Port):
 
     CONTENT_SHELL_NAME = 'Content Shell'
 
+    BUILD_REQUIREMENTS_URL = 'https://code.google.com/p/chromium/wiki/MacBuildInstructions'
+
     @classmethod
     def determine_full_port_name(cls, host, options, port_name):
         if port_name.endswith('mac'):

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

@@ -58,6 +58,8 @@ class WinPort(base.Port):
 
     DEFAULT_BUILD_DIRECTORIES = ('build', 'out')
 
+    BUILD_REQUIREMENTS_URL = 'http://www.chromium.org/developers/how-tos/build-instructions-windows'
+
     @classmethod
     def determine_full_port_name(cls, host, options, port_name):
         if port_name.endswith('win'):