Screenshot effect non-obvious

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index 922e415a770c3c1d41c71cd05cb080fc592be608..8beb97bdb8b6834e0dfbfebbbd575cae55a658b7 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -731,13 +731,13 @@
       'target_name': 'chrome_devtools_lib',
       'type': 'static_library',
       'hard_dependency': 1,
-      'dependencies': [   
+      'dependencies': [
         '../base/base.gyp:base',
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../build/temp_gyp/googleurl.gyp:googleurl',
         '../net/net.gyp:net',
         '../third_party/zlib/zlib.gyp:minizip',
-        '../third_party/zlib/zlib.gyp:zlib',          
+        '../third_party/zlib/zlib.gyp:zlib',
         '../ui/ui.gyp:ui',
       ],
       'include_dirs': [
@@ -795,7 +795,7 @@
         'test/chromedriver/chrome/zip_internal.cc',
         'test/chromedriver/chrome/zip_internal.h',
         'test/chromedriver/chrome/zip_reader.cc',
-        'test/chromedriver/chrome/zip_reader.h',                
+        'test/chromedriver/chrome/zip_reader.h',
         'test/chromedriver/net/net_util.cc',
         'test/chromedriver/net/net_util.h',
         'test/chromedriver/net/sync_websocket.h',
@@ -866,7 +866,7 @@
     {
       'target_name': 'chromedriver2_lib',
       'type': 'static_library',
-      'dependencies': [   
+      'dependencies': [
         'chrome_devtools_lib',
         '../base/base.gyp:base',
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
@@ -1429,6 +1429,7 @@
         'browser/ui/ash/launcher/chrome_launcher_controller_browsertest.cc',
         'browser/ui/ash/launcher/chrome_launcher_controller_per_app_browsertest.cc',
         'browser/ui/ash/launcher/launcher_favicon_loader_browsertest.cc',
+        'browser/ui/ash/screenshot_taker_browsertest.cc',
         'browser/ui/ash/shelf_browsertest.cc',
         'browser/ui/ash/volume_controller_browsertest_chromeos.cc',
         'browser/ui/autofill/autofill_dialog_controller_browsertest.cc',