Extensions: Split extensions utility IPC messages into its own file.

chrome/chrome_utility.gypi

Index: chrome/chrome_utility.gypi
diff --git a/chrome/chrome_utility.gypi b/chrome/chrome_utility.gypi
index c76986acb3a99114820f73f28cbd7730ed0a0bd4..47c734a17be936c40756854ceeced9d2694996f1 100644
--- a/chrome/chrome_utility.gypi
+++ b/chrome/chrome_utility.gypi
@@ -39,6 +39,8 @@
         'utility/cloud_print/bitmap_image.h',
         'utility/cloud_print/pwg_encoder.cc',
         'utility/cloud_print/pwg_encoder.h',
+        'utility/extensions/extensions_handler.cc',
+        'utility/extensions/extensions_handler.h',
         'utility/extensions/unpacker.cc',
         'utility/extensions/unpacker.h',
         'utility/image_writer/disk_unmounter_mac.cc',
@@ -94,29 +96,6 @@
         'utility/web_resource_unpacker.h',
       ],
       'conditions': [
-        ['OS=="win" or OS=="mac"', {
-          'dependencies': [
-            '../components/components.gyp:wifi_component',
-          ],
-          'sources': [
-            'utility/media_galleries/iapps_xml_utils.cc',
-            'utility/media_galleries/iapps_xml_utils.h',
-            'utility/media_galleries/itunes_library_parser.cc',
-            'utility/media_galleries/itunes_library_parser.h',
-            'utility/media_galleries/picasa_album_table_reader.cc',
-            'utility/media_galleries/picasa_album_table_reader.h',
-            'utility/media_galleries/picasa_albums_indexer.cc',
-            'utility/media_galleries/picasa_albums_indexer.h',
-            'utility/media_galleries/pmp_column_reader.cc',
-            'utility/media_galleries/pmp_column_reader.h',
-          ],
-        }],
-        ['OS=="mac"', {
-          'sources': [
-            'utility/media_galleries/iphoto_library_parser.cc',
-            'utility/media_galleries/iphoto_library_parser.h',
-          ],
-        }],
         ['use_openssl==1', {
           'sources!': [
             'utility/importer/nss_decryptor.cc',
@@ -132,19 +111,57 @@
           ],
         }],
         ['OS=="android"', {
+          'sources/': [
+            ['exclude', '^utility/profile_import_handler\.cc'],
+          ],
+        }],
+        ['enable_extensions==1', {
+          'conditions': [
+            ['OS=="win" or OS=="mac"', {
+              'dependencies': [
+                '../components/components.gyp:wifi_component',
+              ],
+              'sources': [
+                'utility/media_galleries/iapps_xml_utils.cc',
+                'utility/media_galleries/iapps_xml_utils.h',
+                'utility/media_galleries/itunes_library_parser.cc',
+                'utility/media_galleries/itunes_library_parser.h',
+                'utility/media_galleries/picasa_album_table_reader.cc',
+                'utility/media_galleries/picasa_album_table_reader.h',
+                'utility/media_galleries/picasa_albums_indexer.cc',
+                'utility/media_galleries/picasa_albums_indexer.h',
+                'utility/media_galleries/pmp_column_reader.cc',
+                'utility/media_galleries/pmp_column_reader.h',
+              ],
+            }],
+            ['OS=="mac"', {
+              'sources': [
+                'utility/media_galleries/iphoto_library_parser.cc',
+                'utility/media_galleries/iphoto_library_parser.h',
+              ],
+            }],
+            ['OS!="win" and OS!="mac"', {
+              'sources': [
+                'utility/image_writer/image_writer_stub.cc',
+              ],
+            }],
+          ],
+        }, {
           'dependencies!': [
+            'common/extensions/api/api.gyp:chrome_api',
             '../third_party/libexif/libexif.gyp:libexif',
           ],
+          'export_dependent_settings!': [
+            'common/extensions/api/api.gyp:chrome_api',
+          ],
           'sources/': [
+            ['exclude', '^utility/extensions/'],
+            ['exclude', '^utility/image_writer/'],
             ['exclude', '^utility/importer/'],
             ['exclude', '^utility/media_galleries/'],
-            ['exclude', '^utility/profile_import_handler\.cc'],
           ],
-        }],
-        ['OS!="win" and OS!="mac"', {
-          'sources': [
-            'utility/image_writer/image_writer_stub.cc',
-          ]
+          'sources!': [
+          ],
         }],
         ['enable_printing!=1', {
           'sources!': [