Move the generation and inclusion of RuntimeEnabledFeatures to blink_platform.dll since many pieces…

Source/core/core_derived_sources.gyp

Index: Source/core/core_derived_sources.gyp
diff --git a/Source/core/core_derived_sources.gyp b/Source/core/core_derived_sources.gyp
index 0581c844dc31528b048bd66d87744d163a5cd960..5c50372b3225785fc4c457bef7f123007afd61a2 100644
--- a/Source/core/core_derived_sources.gyp
+++ b/Source/core/core_derived_sources.gyp
@@ -71,7 +71,7 @@
           'inputs': [
             '<@(scripts_for_in_files)',
             '../build/scripts/make_internal_runtime_flags.py',
-            'page/RuntimeEnabledFeatures.in',
+            '../platform/RuntimeEnabledFeatures.in',
             '../build/scripts/templates/InternalRuntimeFlags.h.tmpl',
             '../build/scripts/templates/InternalRuntimeFlags.idl.tmpl',
           ],
@@ -82,7 +82,7 @@
           'action': [
             'python',
             '../build/scripts/make_internal_runtime_flags.py',
-            'page/RuntimeEnabledFeatures.in',
+            '../platform/RuntimeEnabledFeatures.in',
             '--output_dir',
             '<(SHARED_INTERMEDIATE_DIR)/blink',
           ],
@@ -172,27 +172,6 @@
           ],
         },
         {
-          'action_name': 'RuntimeEnabledFeatures',
-          'inputs': [
-            '<@(scripts_for_in_files)',
-            '../build/scripts/make_runtime_features.py',
-            'page/RuntimeEnabledFeatures.in',
-            '../build/scripts/templates/RuntimeEnabledFeatures.cpp.tmpl',
-            '../build/scripts/templates/RuntimeEnabledFeatures.h.tmpl',
-          ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/blink/RuntimeEnabledFeatures.cpp',
-            '<(SHARED_INTERMEDIATE_DIR)/blink/RuntimeEnabledFeatures.h',
-          ],
-          'action': [
-            'python',
-            '../build/scripts/make_runtime_features.py',
-            'page/RuntimeEnabledFeatures.in',
-            '--output_dir',
-            '<(SHARED_INTERMEDIATE_DIR)/blink',
-          ],
-        },
-        {
           'action_name': 'CSSPropertyNames',
           'variables': {
             'in_files': [