Add unit tests for FontPlatformData::hasSpaceInLigaturesOrKerning

Source/platform/blink_platform.gypi

 {
   'includes': [
     'platform_generated.gypi',
   ],
   'variables': {
     'platform_files': [
       'AsyncFileSystemCallbacks.h',
       'CalculationValue.h',
       'CheckedInt.h',
       'Clock.cpp',
@@ skipping 984 matching lines @@
       'transforms/TransformTestHelper.h',
       'transforms/TransformationMatrixTest.cpp',
       'weborigin/DatabaseIdentifierTest.cpp',
       'weborigin/KnownPortsTest.cpp',
       'weborigin/KURLTest.cpp',
       'weborigin/OriginAccessEntryTest.cpp',
       'weborigin/SchemeRegistryTest.cpp',
       'weborigin/SecurityOriginTest.cpp',
       'weborigin/SecurityPolicyTest.cpp',
     ],
-    # NOTE: these are legacy unit tests, do not add more!
+    # NOTE: These are legacy unit tests and tests that require a Platform

[leviw_travelin_and_unemployed, 2015/07/16 00:01:39]

This comment is a little confusing to me.

[eae, 2015/07/16 00:21:54]

will reword, thanks.

+    # object and are a part of the web:webkit_unit_tests binary.
+    # Do not add more unless the test requires a Platform object.
     'platform_web_unittest_files': [
+      'fonts/FontPlatformDataTest.cpp',
+      'fonts/TestFontSelector.h',
       'graphics/BitmapImageTest.cpp',
       'graphics/Canvas2DLayerBridgeTest.cpp',
       'graphics/Canvas2DLayerManagerTest.cpp',
       'graphics/DeferredImageDecoderTest.cpp',
       'graphics/GraphicsLayerTest.cpp',
       'graphics/ImageDecodingStoreTest.cpp',
       'graphics/ImageFrameGeneratorTest.cpp',
       'graphics/ImageLayerChromiumTest.cpp',
       'graphics/test/MockImageDecoder.h',
       'graphics/test/MockWebGraphicsContext3D.h',
@@ skipping 26 matching lines @@
       ['os_posix==1 and OS!="mac"',
         {
           'platform_test_files': [
             'text/LocaleICUTest.cpp',
           ],
         }
       ],
     ],
   },
 }