Create separate extensions_common and extensions_browser GYP targets.

chrome/chrome_common.gypi

Index: chrome/chrome_common.gypi
diff --git a/chrome/chrome_common.gypi b/chrome/chrome_common.gypi
index 7acd9e78e1a83dc9143c5d293c4357f4133455e3..b7a72306fbeb2a8c5d1889dd3e1eedd726f99d6e 100644
--- a/chrome/chrome_common.gypi
+++ b/chrome/chrome_common.gypi
@@ -41,6 +41,7 @@
         '<(DEPTH)/components/components.gyp:variations',
         '<(DEPTH)/components/components.gyp:visitedlink_common',
         '<(DEPTH)/content/content.gyp:content_common',
+        '<(DEPTH)/extensions/extensions.gyp:extensions_common',
         '<(DEPTH)/net/net.gyp:net',
         '<(DEPTH)/skia/skia.gyp:skia',
         '<(DEPTH)/third_party/icu/icu.gyp:icui18n',
@@ -55,67 +56,6 @@
       'sources': [
         '../apps/app_shim/app_shim_launch.h',
         '../apps/app_shim/app_shim_messages.h',
-        '../extensions/common/crx_file.cc',
-        '../extensions/common/crx_file.h',
-        '../extensions/common/draggable_region.cc',
-        '../extensions/common/draggable_region.h',
-        '../extensions/common/error_utils.cc',
-        '../extensions/common/error_utils.h',
-        '../extensions/common/event_filter.cc',
-        '../extensions/common/event_filter.h',
-        '../extensions/common/event_filtering_info.cc',
-        '../extensions/common/event_filtering_info.h',
-        '../extensions/common/event_matcher.cc',
-        '../extensions/common/event_matcher.h',
-        '../extensions/common/extension_paths.cc',
-        '../extensions/common/extension_paths.h',
-        '../extensions/common/extension_resource.cc',
-        '../extensions/common/extension_resource.h',
-        '../extensions/common/extension_urls.cc',
-        '../extensions/common/extension_urls.h',
-        '../extensions/common/extensions_client.cc',
-        '../extensions/common/extensions_client.h',
-        '../extensions/common/features/feature.cc',
-        '../extensions/common/features/feature.h',
-        '../extensions/common/features/feature_provider.cc',
-        '../extensions/common/features/feature_provider.h',
-        '../extensions/common/id_util.cc',
-        '../extensions/common/id_util.h',
-        '../extensions/common/install_warning.cc',
-        '../extensions/common/install_warning.h',
-        '../extensions/common/manifest.cc',
-        '../extensions/common/manifest.h',
-        '../extensions/common/manifest_constants.cc',
-        '../extensions/common/manifest_constants.h',
-        '../extensions/common/matcher/regex_set_matcher.cc',
-        '../extensions/common/matcher/regex_set_matcher.h',
-        '../extensions/common/matcher/string_pattern.cc',
-        '../extensions/common/matcher/string_pattern.h',
-        '../extensions/common/matcher/substring_set_matcher.cc',
-        '../extensions/common/matcher/substring_set_matcher.h',
-        '../extensions/common/matcher/url_matcher.cc',
-        '../extensions/common/matcher/url_matcher.h',
-        '../extensions/common/matcher/url_matcher_constants.cc',
-        '../extensions/common/matcher/url_matcher_constants.h',
-        '../extensions/common/matcher/url_matcher_factory.cc',
-        '../extensions/common/matcher/url_matcher_factory.h',
-        '../extensions/common/matcher/url_matcher_helpers.cc',
-        '../extensions/common/matcher/url_matcher_helpers.h',
-        '../extensions/common/one_shot_event.cc',
-        '../extensions/common/one_shot_event.h',
-        '../extensions/common/permissions/permissions_provider.h',
-        '../extensions/common/stack_frame.cc',
-        '../extensions/common/stack_frame.h',
-        '../extensions/common/switches.cc',
-        '../extensions/common/switches.h',
-        '../extensions/common/url_pattern.cc',
-        '../extensions/common/url_pattern.h',
-        '../extensions/common/url_pattern_set.cc',
-        '../extensions/common/url_pattern_set.h',
-        '../extensions/common/user_script.cc',
-        '../extensions/common/user_script.h',
-        '../extensions/common/view_type.cc',
-        '../extensions/common/view_type.h',
         'common/all_messages.h',
         'common/attrition_experiments.h',
         'common/auto_start_linux.cc',