Remove gen/blink/core from build files since all includes have been qualified.

Source/build/scripts/name_macros.py

Index: Source/build/scripts/name_macros.py
diff --git a/Source/build/scripts/name_macros.py b/Source/build/scripts/name_macros.py
index 7c2291f05b9b74cdb80e302ad9689fa692f9d19d..a4f69a942dfe6125dce23d96a1a003e84d2bd42e 100644
--- a/Source/build/scripts/name_macros.py
+++ b/Source/build/scripts/name_macros.py
@@ -141,7 +141,7 @@ class Writer(in_generator.Writer):
     def generate_headers_header(self):
         base_header_for_suffix = ''
         if self.suffix:
-            base_header_for_suffix = '\n#include "%(namespace)sHeaders.h"\n' % {'namespace': self.namespace}
+            base_header_for_suffix = '\n#include "core/%(namespace)sHeaders.h"\n' % {'namespace': self.namespace}
         return HEADER_TEMPLATE % {
             'license': license.license_for_generated_cpp(),
             'namespace': self.namespace,
@@ -183,7 +183,7 @@ class Writer(in_generator.Writer):
     def generate_interfaces_header(self):
         base_header_for_suffix = ''
         if self.suffix:
-            base_header_for_suffix = '\n#include "%(namespace)sInterfaces.h"\n' % {'namespace': self.namespace}
+            base_header_for_suffix = '\n#include "core/%(namespace)sInterfaces.h"\n' % {'namespace': self.namespace}
         return INTERFACES_HEADER_TEMPLATE % {
             'license': license.license_for_generated_cpp(),
             'namespace': self.namespace,