[iOS/GN] Fix the compilation of "all" on iOS with gn.

mojo/public/tools/bindings/mojom.gni

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 mojom_generator_root = "//mojo/public/tools/bindings"
 mojom_generator_script = "$mojom_generator_root/mojom_bindings_generator.py"
 mojom_generator_sources = [
   "$mojom_generator_root/generators/mojom_cpp_generator.py",
   "$mojom_generator_root/generators/mojom_js_generator.py",
   "$mojom_generator_root/generators/mojom_java_generator.py",
   "$mojom_generator_root/pylib/mojom/__init__.py",
   "$mojom_generator_root/pylib/mojom/error.py",
   "$mojom_generator_root/pylib/mojom/generate/__init__.py",
   "$mojom_generator_root/pylib/mojom/generate/constant_resolver.py",
   "$mojom_generator_root/pylib/mojom/generate/data.py",
   "$mojom_generator_root/pylib/mojom/generate/generator.py",
   "$mojom_generator_root/pylib/mojom/generate/module.py",
   "$mojom_generator_root/pylib/mojom/generate/pack.py",
   "$mojom_generator_root/pylib/mojom/generate/template_expander.py",
   "$mojom_generator_root/pylib/mojom/parse/__init__.py",
   "$mojom_generator_root/pylib/mojom/parse/ast.py",
   "$mojom_generator_root/pylib/mojom/parse/lexer.py",
   "$mojom_generator_root/pylib/mojom/parse/parser.py",
   "$mojom_generator_root/pylib/mojom/parse/translate.py",
   "$mojom_generator_script",
 ]
 
-_bindings_configuration_files = [
-  "//mojo/public/tools/bindings/chromium_bindings_configuration.gni",
-  "//mojo/public/tools/bindings/blink_bindings_configuration.gni",
-]
+if (!is_ios) {
+  _bindings_configuration_files = [
+    "//mojo/public/tools/bindings/chromium_bindings_configuration.gni",
+    "//mojo/public/tools/bindings/blink_bindings_configuration.gni",
+  ]
+} else {
+  _bindings_configuration_files =
+      [ "//mojo/public/tools/bindings/chromium_bindings_configuration.gni" ]
+}
 _bindings_configurations = []
 foreach(config_file, _bindings_configuration_files) {
   _bindings_configurations += [ read_file(config_file, "scope") ]
 }
 
 # Generate C++/JavaScript/Java source files from mojom files. The output files
 # will go under the generated file directory tree with the same path as each
 # input file.
 #
 # Parameters:
@@ skipping 345 matching lines @@
           full_name = get_label_info(d, "label_no_toolchain")
           deps += [ "${full_name}_java" ]
         }
 
         srcjar_deps = [ ":$java_srcjar_target_name" ]
         run_findbugs_override = false
       }
     }
   }
 }