Wake Lock API implementation (Blink part)

Source/web/web.gypi

 {
   'variables': {
     'web_files': [
       'AssertMatchingEnums.cpp',
       'AssociatedURLLoader.cpp',
       'AssociatedURLLoader.h',
       'ChromeClientImpl.cpp',
       'ChromeClientImpl.h',
       'ColorChooserPopupUIController.cpp',
       'ColorChooserPopupUIController.h',
@@ skipping 267 matching lines @@
       'tests/LinkHighlightTest.cpp',
       'tests/ListenerLeakTest.cpp',
       'tests/MHTMLTest.cpp',
       'tests/OpenTypeVerticalDataTest.cpp',
       'tests/PageSerializerTest.cpp',
       'tests/PaintAggregatorTest.cpp',
       'tests/PinchViewportTest.cpp',
       'tests/PrerenderingTest.cpp',
       'tests/ProgrammaticScrollTest.cpp',
       'tests/LayoutGeometryMapTest.cpp',
+      'tests/ScreenWakeLockTest.cpp',
       'tests/ScrollingCoordinatorTest.cpp',
       'tests/SpinLockTest.cpp',
       'tests/TextFinderTest.cpp',
       'tests/TopControlsTest.cpp',
       'tests/TouchActionTest.cpp',
       'tests/ViewportTest.cpp',
       'tests/WebDocumentTest.cpp',
       'tests/WebFrameTest.cpp',
       'tests/WebHelperPluginTest.cpp',
       'tests/WebImageTest.cpp',
@@ skipping 14 matching lines @@
         {
           'web_unittest_files': [
             # Mac uses ScrollAnimatorMac instead of ScrollAnimatorNone.
             'tests/ScrollAnimatorNoneTest.cpp',
           ],
         }
       ],
     ],
   },
 }