Bug 1242103 - Add browser-chrome-screenshots test configs for Windows and Linux. r=armenzg

--HG--
extra : commitid : A9fQAQ91xoF

testing/mozharness/configs/unittests/linux_unittest.py

@@ -197,6 +197,7 @@ config = {
         "browser-chrome-chunked": ["--browser-chrome", "--chunk-by-runtime"],
         "browser-chrome-addons": ["--browser-chrome", "--chunk-by-runtime", "--tag=addons"],
         "browser-chrome-coverage": ["--timeout=1200"],
+        "browser-chrome-screenshots": ["--browser-chrome", "--subsuite=screenshots"],
         "mochitest-gl": ["--subsuite=webgl"],
         "mochitest-devtools-chrome": ["--browser-chrome", "--subsuite=devtools"],
         "mochitest-devtools-chrome-chunked": ["--browser-chrome", "--subsuite=devtools", "--chunk-by-runtime"],

testing/mozharness/configs/unittests/win_unittest.py

@@ -172,6 +172,7 @@ config = {
         "browser-chrome": ["--browser-chrome"],
         "browser-chrome-chunked": ["--browser-chrome", "--chunk-by-runtime"],
         "browser-chrome-addons": ["--browser-chrome", "--chunk-by-runtime", "--tag=addons"],
+        "browser-chrome-screenshots": ["--browser-chrome", "--subsuite=screenshots"],
         "mochitest-gl": ["--subsuite=webgl"],
         "mochitest-devtools-chrome": ["--browser-chrome", "--subsuite=devtools"],
         "mochitest-devtools-chrome-chunked": ["--browser-chrome", "--subsuite=devtools", "--chunk-by-runtime"],