Only build various flash/pnacl/ppapi code when they are enabled.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 2df0bdf2e39476c53df3d1e50668d3ec00d9ca85..2e3294d1c45a2e3c5dc2addfd5df9adb56ae4e07 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -209,8 +209,6 @@
       'browser/browsing_data/browsing_data_database_helper.h',
       'browser/browsing_data/browsing_data_file_system_helper.cc',
       'browser/browsing_data/browsing_data_file_system_helper.h',
-      'browser/browsing_data/browsing_data_flash_lso_helper.cc',
-      'browser/browsing_data/browsing_data_flash_lso_helper.h',
       'browser/browsing_data/browsing_data_helper.cc',
       'browser/browsing_data/browsing_data_helper.h',
       'browser/browsing_data/browsing_data_indexed_db_helper.cc',
@@ -280,12 +278,6 @@
       'browser/component_updater/component_updater_resource_throttle.h',
       'browser/component_updater/ev_whitelist_component_installer.cc',
       'browser/component_updater/ev_whitelist_component_installer.h',
-      'browser/component_updater/flash_component_installer.h',
-      'browser/component_updater/pepper_flash_component_installer.cc',
-      'browser/component_updater/pnacl/pnacl_component_installer.cc',
-      'browser/component_updater/pnacl/pnacl_component_installer.h',
-      'browser/component_updater/ppapi_utils.cc',
-      'browser/component_updater/ppapi_utils.h',
       'browser/component_updater/recovery_component_installer.cc',
       'browser/component_updater/recovery_component_installer.h',
       'browser/component_updater/sw_reporter_installer_win.cc',
@@ -1721,6 +1713,8 @@
       'browser/spellchecker/word_trimmer.h',
     ],
     'chrome_browser_nacl_sources': [
+      'browser/component_updater/pnacl/pnacl_component_installer.cc',
+      'browser/component_updater/pnacl/pnacl_component_installer.h',
       'browser/nacl_host/nacl_browser_delegate_impl.cc',
       'browser/nacl_host/nacl_browser_delegate_impl.h',
       'browser/nacl_host/nacl_infobar_delegate.cc',
@@ -1728,6 +1722,12 @@
     ],
     # See also the plugin_installation_sources list below.
     'chrome_browser_plugins_sources': [
+      'browser/browsing_data/browsing_data_flash_lso_helper.cc',
+      'browser/browsing_data/browsing_data_flash_lso_helper.h',
+      'browser/component_updater/flash_component_installer.h',
+      'browser/component_updater/pepper_flash_component_installer.cc',
+      'browser/component_updater/ppapi_utils.cc',
+      'browser/component_updater/ppapi_utils.h',
       'browser/metrics/plugin_metrics_provider.cc',
       'browser/metrics/plugin_metrics_provider.h',
       'browser/pepper_broker_infobar_delegate.cc',
@@ -2943,7 +2943,6 @@
             '../net/net.gyp:net_with_v8',
             # TODO(tonyg): Remove this dependency (crbug.com/280157).
             '../testing/perf/perf_test.gyp:*',
-            '../third_party/adobe/flash/flash_player.gyp:flapper_version_h',
             '../third_party/expat/expat.gyp:expat',
             '../third_party/leveldatabase/leveldatabase.gyp:leveldatabase',
             '../third_party/libaddressinput/libaddressinput.gyp:libaddressinput',
@@ -3095,6 +3094,7 @@
         ['enable_plugins==1', {
           'dependencies': [
             '../ppapi/ppapi_internal.gyp:ppapi_ipc',
+            '../third_party/adobe/flash/flash_player.gyp:flapper_version_h',
           ],
           'sources': [ '<@(chrome_browser_plugins_sources)' ],
         }],