Add continous testing configuration and script

- Initial script and config for windows x64.
- Add script that replaces strings in DEPS, so that it can point to
  a mirror if needed.

Change-Id: Ib94a5902dba91fe521517b01aaa439c16cccebf9

kokoro/deps_replacer.py

@@ -0,0 +1,25 @@
+# Copyright 2017 Google Inc. All Rights Reserved.
+"""This is a simple string replacer for DEPS file.
+
+This replaces all instances of search_text with replacement_text.
+
+Usage:
+ this_script.py search_text replacement_text
+"""
+
+import os
+import sys
+
+if len(sys.argv) != 3:
+  sys.exit(1)
+
+script_dir = os.path.dirname(os.path.realpath(__file__))
+deps_file = os.path.join(os.path.dirname(script_dir), 'DEPS')
+
+new_file_content = ''
+with open(deps_file, 'r') as f:
+  for line in f:
+    new_file_content += line.replace(sys.argv[1], sys.argv[2])
+
+with open(deps_file, 'w') as f:
+  f.write(new_file_content)

kokoro/windows/x64/continuous.bat

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+:: Copyright 2017 Google Inc. All Rights Reserved.
+set OUTPUT_DIRECTORY=Release_x64
+set GYP_DEFINES=target_arch=x64
+
+:: TODO(rkuroiwa): Put this in a batch script and source it, so that this
+:: doesn't need to be copied for all configurations.
+git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git ..\depot_tools\
+cd ..
+python src\kokoro\deps_replacer.py "github.com" "github.googlesource.com"
+depot_tools\gclient config https://github.com/google/shaka-packager.git --name=src --unmanaged
+depot_tools\gclient sync
+cd src
+..\depot_tools\ninja -C "out\%OUTPUT_DIRECTORY%" -k 100
+
+copy "out\%OUTPUT_DIRECTORY%\packager.exe" packager-win.exe
+for %%f in ("out\%OUTPUT_DIRECTORY%\*_*test.exe") do (%%f || exit /b 666)
+python "out\%OUTPUT_DIRECTORY%\packager_test.py" -v

kokoro/windows/x64/continuous.cfg

@@ -0,0 +1 @@
+build_file: "continuous.bat"