Fix IDL dependency computation for partial interfaces

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 9677e33d56bd508843b42d93cd6bc810c5ee0a11..aba112f8523146b31c85ac5fd07e3d3be78b3991 100644
--- a/Source/bindings/derived_sources.gyp
+++ b/Source/bindings/derived_sources.gyp
@@ -45,8 +45,7 @@
     'support_idl_files': [
       '<@(webcore_testing_support_idl_files)',
     ],
-    'testing_support_idl_files': [
-      '<@(webcore_testing_support_idl_files)',
+    'generated_support_idl_files': [
       '<@(generated_webcore_testing_support_idl_files)',
     ],
     'compiler_module_files': [
@@ -202,7 +201,8 @@
       ],
       'sources': [
         '<@(main_idl_files)',
-        '<@(testing_support_idl_files)',
+        '<@(support_idl_files)',
+        '<@(generated_support_idl_files)',
       ],
       'rules': [{
         'rule_name': 'binding',
@@ -224,7 +224,7 @@
           #
           # If a new partial interface is added, need to regyp to update these
           # dependencies, as these are computed statically at gyp runtime.
-          '<!@pymod_do_main(list_idl_files_with_partial_interface <@(main_idl_files))',
+          '<!@pymod_do_main(list_idl_files_with_partial_interface <@(main_idl_files) <@(support_idl_files))',
           # Generated IDLs are all partial interfaces, hence everything
           # potentially depends on them.
           '<@(generated_global_constructors_idl_files)',
@@ -264,7 +264,7 @@
           '--interfaceDependenciesFile',
           '<(SHARED_INTERMEDIATE_DIR)/blink/InterfaceDependencies.txt',
           '--additionalIdlFiles',
-          '<(testing_support_idl_files)',
+          '<@(support_idl_files) <@(generated_support_idl_files)',

[kihong, 2013/10/23 08:18:44]

IMHO, we don't need support_idl_files here also?

[Nils Barth (inactive), 2013/10/23 10:29:00]

Got it, removed, and updated comments to reflect these.

OIC:
Now that support_idl_files are included in InterfaceDependencies,
we can remove them from this list of additional files.
OTOH, we have to list the generated files, since they're not present
at GYP run time, so we don't include them in InterfaceDependencies.

We could include generated files in InterfaceDependencies,
and then we could get rid of additionalIdlFiles,
but this would require some hacking.

           '<@(preprocessor)',
           '<@(write_file_only_if_changed)',
           '<(RULE_INPUT_PATH)',