[Bindings] Remove a redundant option write-file-if-only-changed in bindings

third_party/WebKit/Source/bindings/scripts/scripts.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.
 
 import("//third_party/WebKit/Source/core/core_idl_files.gni")
 import("//third_party/WebKit/Source/modules/modules_idl_files.gni")
 
 bindings_scripts_dir = get_path_info(".", "abspath")
 bindings_scripts_output_dir = "$root_gen_dir/blink/bindings/scripts"
 
@@ skipping 66 matching lines @@
     response_file_contents = rebase_path(invoker.sources, root_build_dir)
     args = [
       "--cache-directory",
       rebase_path(bindings_scripts_output_dir, root_build_dir),
       "--idl-files-list",
       "{{response_file_name}}",
       "--interfaces-info-file",
       rebase_path(invoker.interfaces_info_file, root_build_dir),
       "--component-info-file",
       rebase_path(invoker.component_info_file, root_build_dir),
-      "--write-file-only-if-changed=1",
     ]
 
     deps = [ "//third_party/WebKit/Source/bindings/scripts:cached_lex_yacc_tables" ] + invoker.deps
   }
 }
 
 # Calls generate_event_interfaces
 #
 # Parameters:
 #   sources = A list of IDL files to process.
@@ skipping 15 matching lines @@
     outputs = [
       output_file,
     ]
 
     script = "//third_party/WebKit/Source/bindings/scripts/generate_event_interfaces.py"
     args = [
       "--event-idl-files-list",
       rebase_path(idl_files_list, root_build_dir),
       "--event-interfaces-file",
       rebase_path(output_file, root_build_dir),
-      "--write-file-only-if-changed=1",  # Always true for Ninja.
     ]
 
     if (defined(invoker.suffix)) {
       args += [
         "--suffix",
         invoker.suffix,
       ]
     }
   }
 }
@@ skipping 44 matching lines @@
       "$output_dir/V8{{source_name_part}}${output_name_suffix}.h",
     ]
 
     args = [
       "--cache-dir",
       rebase_path(bindings_scripts_output_dir, root_build_dir),
       "--output-dir",
       rebase_path(output_dir, root_build_dir),
       "--info-dir",
       rebase_path("$bindings_output_dir", root_build_dir),
-      "--write-file-only-if-changed=1",  # Always true for Ninja.
       "--target-component",
       invoker.target_component,
       "{{source}}",
     ]
 
     public_deps = [
       "//third_party/WebKit/Source/bindings/core:core_global_constructors_idls",
 
       # FIXME: should be interfaces_info_core (w/o modules)
       # http://crbug.com/358074
@@ skipping 36 matching lines @@
       "--cache-dir",
       rebase_path(bindings_scripts_output_dir, root_build_dir),
       "--output-dir",
       rebase_path(invoker.output_dir, root_build_dir),
       "--impl-output-dir",
       rebase_path(dictionary_impl_output_dir, root_build_dir),
       "--info-dir",
       rebase_path("$bindings_output_dir", root_build_dir),
       "--target-component",
       invoker.target_component,
-      "--write-file-only-if-changed=1",
       "--generate-impl",
       rebase_path(idl_files_list, root_build_dir),
     ]
 
     deps = [
       # FIXME: should be interfaces_info_core (w/o modules)
       # http://crbug.com/358074
       "//third_party/WebKit/Source/bindings/core:interfaces_info_individual_core",
       "//third_party/WebKit/Source/bindings/modules:interfaces_info",
       "//third_party/WebKit/Source/bindings/modules:interfaces_info_individual_modules",
@@ skipping 50 matching lines @@
                idl_files_list,
              ] + invoker.sources_generated + invoker.sources
 
     outputs = [
       invoker.output_file,
     ]
 
     args = [
       "--idl-files-list",
       rebase_path(idl_files_list, root_build_dir),
-      "--write-file-only-if-changed=1",  # Always true for Ninja.
       "--",
     ]
     args += rebase_path(invoker.sources_generated, root_build_dir)
     args += [ rebase_path(invoker.output_file, root_build_dir) ]
 
     deps = invoker.deps
   }
 }
 
 # Calls the generate_global_constructors script.
@@ skipping 19 matching lines @@
                "//third_party/WebKit/Source/bindings/scripts/utilities.py",
                idl_files_list,
                invoker.global_objects_file,
              ] + invoker.sources
 
     args = [
       "--idl-files-list",
       rebase_path(idl_files_list, root_build_dir),
       "--global-objects-file",
       rebase_path(invoker.global_objects_file, root_build_dir),
-      "--write-file-only-if-changed=1",  # Always true for Ninja.
       "--",
     ]
 
     output_dir = invoker.output_dir
     component = invoker.component
 
     # generate outputs from invoker.interfaces.
     output_idl_files = []
     output_header_files = []
     foreach(interface, invoker.interfaces) {
       args += [ interface ]
       output_idl_file = "$output_dir/${interface}${component}Constructors.idl"
       args += [ rebase_path(output_idl_file, root_build_dir) ]
       output_idl_files += [ output_idl_file ]
       output_header_files +=
           [ "$output_dir/${interface}${component}Constructors.h" ]
     }
 
     outputs = output_idl_files + output_header_files
     deps = invoker.deps
   }
 }