Fixes to make scripts generate includes with paths.

Source/bindings/derived_sources.gyp

Index: Source/bindings/derived_sources.gyp
diff --git a/Source/bindings/derived_sources.gyp b/Source/bindings/derived_sources.gyp
index bcb3c9ca81a8fa986d42a9976e2e59976fe79777..c4632872af36e61bc52a9855548ebf207add832d 100644
--- a/Source/bindings/derived_sources.gyp
+++ b/Source/bindings/derived_sources.gyp
@@ -119,6 +119,33 @@
          '<(SHARED_INTERMEDIATE_DIR)/supplemental_dependency.tmp',
        ],
        'message': 'Resolving partial interfaces dependencies in all IDL files',
+      }, {
+        'action_name': 'generateIDL2PathMapping',
+        'variables': {
+          # Write sources into a file, so that the action command line
+          # won't exceed OS limits.
+          'idl_files_list': '<|(idl_files_list.tmp <@(idl_files))',
+          },
+          'inputs': [
+            '../bindings/scripts/idltopathgenerator.py',
+            '<(idl_files_list)',
+            '<!@(cat <(idl_files_list))',
+          ],
+          'outputs': [
+            '<(SHARED_INTERMEDIATE_DIR)/idltopath.tmp',
+          ],
+          'msvs_cygwin_shell': 0,
+          'action': [
+            'python',
+            '../bindings/scripts/idltopathgenerator.py',
+            '--include-root-directory',
+            '..',
+            '--idl-list-file',
+            '<(idl_files_list)',
+            '--output-file',
+            '<(SHARED_INTERMEDIATE_DIR)/idltopath.tmp',
+         ],
+         'message': 'Generating a map from IDL name to header file path.',
       }]
     },
     {
@@ -160,6 +187,7 @@
           'scripts/CodeGeneratorV8.pm',
           'scripts/IDLParser.pm',
           'scripts/IDLAttributes.txt',
+          'scripts/idltopath.pm',
           '../core/scripts/preprocessor.pm',
           '<!@pymod_do_main(supplemental_idl_files <@(idl_files))',
         ],
@@ -201,6 +229,8 @@
           '<@(generator_include_dirs)',
           '--supplementalDependencyFile',
           '<(SHARED_INTERMEDIATE_DIR)/supplemental_dependency.tmp',
+          '--idlToPathFile',
+          '<(SHARED_INTERMEDIATE_DIR)/idltopath.tmp',
           '--additionalIdlFiles',
           '<(webcore_test_support_idl_files)',
           '<(RULE_INPUT_PATH)',