Add LayoutLocale class

third_party/WebKit/Source/platform/blink_platform.gypi

 {
   'includes': [
     'platform_generated.gypi',
   ],
   'variables': {
     'platform_files': [
       'AsyncFileSystemCallbacks.h',
       'CalculationValue.h',
       'CheckedInt.h',
       'ContentDecryptionModuleResult.h',
@@ skipping 31 matching lines @@
       'Histogram.cpp',
       'Histogram.h',
       'HostWindow.h',
       'JSONValues.cpp',
       'JSONValues.h',
       'KeyboardCodes.h',
       'KillRing.h',
       'KillRingNone.cpp',
       'Language.cpp',
       'Language.h',
+      'LayoutLocale.cpp',
+      'LayoutLocale.h',
       'LayoutTestSupport.cpp',
       'LayoutTestSupport.h',
       'LayoutUnit.h',
       'Length.cpp',
       'Length.h',
       'LengthBox.cpp',
       'LengthBox.h',
       'LengthFunctions.cpp',
       'LengthFunctions.h',
       'LengthPoint.h',
@@ skipping 1075 matching lines @@
       'weborigin/SecurityOriginHash.h',
       'weborigin/SecurityPolicy.cpp',
       'weborigin/SecurityPolicy.h',
       'weborigin/Suborigin.cpp',
       'weborigin/Suborigin.h',
     ],
     'platform_test_files': [
       'DecimalTest.cpp',
       'DragImageTest.cpp',
       'HistogramTest.cpp',
+      'LayoutLocaleTest.cpp',
       'LayoutUnitTest.cpp',
       'LifecycleContextTest.cpp',
       'PODArenaTest.cpp',
       'PODFreeListArenaTest.cpp',
       'PODIntervalTreeTest.cpp',
       'PODRedBlackTreeTest.cpp',
       'PurgeableVectorTest.cpp',
       'SharedBufferTest.cpp',
       'TimerTest.cpp',
       'TracedValueTest.cpp',
@@ skipping 190 matching lines @@
       ['use_default_render_theme==1',
         {
           'platform_test_files': [
             'scroll/ScrollbarThemeAuraTest.cpp',
           ],
         }
       ],
     ],
   },
 }