[inspector] Fix double rules warning when compiling inspector with GYP

src/inspector/inspector.gyp

 # Copyright 2016 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'protocol_path': '../../third_party/inspector_protocol',
   },
   'includes': [
     'inspector.gypi',
     '<(PRODUCT_DIR)/../../../third_party/inspector_protocol/inspector_protocol.gypi',
   ],
   'targets': [
     { 'target_name': 'inspector_injected_script',
       'type': 'none',
-      'conditions': [
-        ['want_separate_host_toolset==1', {
-          'toolsets': ['host', 'target'],
-        }, {
-          'toolsets': ['target'],
-        }]
-      ],
+      'toolsets': ['target'],
       'actions': [
         {
           'action_name': 'convert_js_to_cpp_char_array',
           'inputs': [
             'build/xxd.py',
             '<(inspector_injected_script_source)',
           ],
           'outputs': [
             '<(inspector_generated_injected_script)',
           ],
           'action': [
             'python',
             'build/xxd.py',
             'InjectedScriptSource_js',
             'injected-script-source.js',
             '<@(_outputs)'
           ],
         },
       ],
       # Since this target generates header files, it needs to be a hard dependency.
       'hard_dependency': 1,
     },
     { 'target_name': 'inspector_debugger_script',
       'type': 'none',
-      'conditions': [
-        ['want_separate_host_toolset==1', {
-          'toolsets': ['host', 'target'],
-        }, {
-          'toolsets': ['target'],
-        }]
-      ],
+      'toolsets': ['target'],
       'actions': [
         {
           'action_name': 'convert_js_to_cpp_char_array',
           'inputs': [
             'build/xxd.py',
             '<(inspector_debugger_script_source)',
           ],
           'outputs': [
             '<(inspector_generated_debugger_script)',
           ],
           'action': [
             'python',
             'build/xxd.py',
             'DebuggerScript_js',
             'debugger-script.js',
             '<@(_outputs)'
           ],
         },
       ],
       # Since this target generates header files, it needs to be a hard dependency.
       'hard_dependency': 1,
     },
     { 'target_name': 'protocol_compatibility',
       'type': 'none',
-      'conditions': [
-        ['want_separate_host_toolset==1', {
-          'toolsets': ['host', 'target'],
-        }, {
-          'toolsets': ['target'],
-        }]
-      ],
+      'toolsets': ['target'],
       'actions': [
         {
           'action_name': 'protocol_compatibility',
           'inputs': [
             'js_protocol.json',
           ],
           'outputs': [
             '<@(SHARED_INTERMEDIATE_DIR)/src/js_protocol.stamp',
           ],
           'action': [
             'python',
             '<(protocol_path)/CheckProtocolCompatibility.py',
             '--stamp', '<@(_outputs)',
             'js_protocol.json',
           ],
           'message': 'Generating inspector protocol sources from protocol json definition',
         },
       ]
     },
     { 'target_name': 'protocol_generated_sources',
       'type': 'none',
       'dependencies': [ 'protocol_compatibility' ],
-      'conditions': [
-        ['want_separate_host_toolset==1', {
-          'toolsets': ['host', 'target'],
-        }, {
-          'toolsets': ['target'],
-        }]
-      ],
+      'toolsets': ['target'],
       'actions': [
         {
           'action_name': 'protocol_generated_sources',
           'inputs': [
             'js_protocol.json',
             'inspector_protocol_config.json',
             '<@(inspector_protocol_files)',
           ],
           'outputs': [
             '<@(inspector_generated_sources)',
           ],
           'action': [
             'python',
             '<(protocol_path)/CodeGenerator.py',
             '--jinja_dir', '../../third_party',
             '--output_base', '<(SHARED_INTERMEDIATE_DIR)/src/inspector',
             '--config', 'inspector_protocol_config.json',
           ],
           'message': 'Generating inspector protocol sources from protocol json',
         },
       ]
     },
   ],
 }