Rework how the gn migration targets are included from all.gyp.

This change splits out the targets being used to track the gn
migration from  all.gyp into a separate, new file
(gn_migration.gypi), and reworks their structure to

  1) better match the gn_all target in src/BUILD.gn,
  2) identify the targets built by 'all' in gyp that
     are not yet explicitly listed in the gn_all target
     (the new 'add_to_gn_all' target),
  3) identify the targets left to be converted.

The 'add_to_gn_all' targets will simply be moved to gn_all in
a follow-up CL.

Right now these targets will be linux-only, but follow-up CLs
will expand them to the other configurations.

This CL should produce no actual changes in the builds.

R=brettw@chromium.org
BUG=461019
CQ_EXTRA_TRYBOTS=tryserver.chromium.linux:android_chromium_gn_compile_dbg,android_chromium_gn_compile_rel;tryserver.chromium.win:win8_chromium_gn_rel,win8_chromium_gn_dbg;tryserver.chromium.mac:mac_chromium_gn_rel,mac_chromium_gn_dbg

Review URL: https://codereview.chromium.org/962343002

Cr-Commit-Position: refs/heads/master@{#318599}

build/all.gyp

@@ -467,6 +467,12 @@
     }, # target_name: chromium_builder_tests
   ],
   'conditions': [
+    # TODO(GYP): make gn_migration.gypi work unconditionally.
+    ['OS=="linux" and chromeos==0', {
+      'includes': [
+        'gn_migration.gypi',
+      ],
+    }],
     ['OS!="ios"', {
       'targets': [
         {
@@ -515,156 +521,6 @@
     }], # OS!=ios
     ['OS!="ios" and OS!="android"', {
       'targets': [
-        {
-          # TODO(GYP) - make gyp_all and gn_all work on iOS and Android also.
-          'target_name': 'gyp_all',
-          'type': 'none',
-          'dependencies': [
-            ':gn_all',
-            '../chrome/chrome.gyp:chromedriver_unittests',
-            '../components/components_tests.gyp:components_browsertests',
-            # '../components/nacl.gyp:nacl_loader_unittests',  # TODO(GYP)
-            # '../remoting/remoting.gyp:remoting_unittests',  # TODO(GYP)
-            '../ui/compositor/compositor.gyp:compositor_unittests',
-          ],
-          'conditions': [
-            ['OS!="android"', {
-              'dependencies': [
-                # '../device/device_tests.gyp:device_unittests',  # TODO(GYP)
-                # '../google_apis/google_apis.gyp:google_apis_unittests',  # TODO(GYP)
-              ],
-            }],
-          ],
-        },
-        {
-          'target_name': 'gn_all',
-          'type': 'none',
-
-          'dependencies': [
-            '../base/base.gyp:base_unittests',
-            '../cc/cc_tests.gyp:cc_unittests',
-            '../chrome/chrome.gyp:chrome',
-            '../chrome/chrome.gyp:browser_tests',
-            '../chrome/chrome.gyp:interactive_ui_tests',
-            '../chrome/chrome.gyp:sync_integration_tests',
-            '../chrome/chrome.gyp:unit_tests',
-            '../components/components_tests.gyp:components_unittests',
-            '../content/content_shell_and_tests.gyp:content_shell',
-            '../content/content_shell_and_tests.gyp:content_browsertests',
-            '../content/content_shell_and_tests.gyp:content_perftests',
-            '../content/content_shell_and_tests.gyp:content_unittests',
-            '../crypto/crypto.gyp:crypto_unittests',
-            '../extensions/extensions_tests.gyp:extensions_browsertests',
-            '../extensions/extensions_tests.gyp:extensions_unittests',
-            '../google_apis/gcm/gcm.gyp:gcm_unit_tests',
-            '../gpu/gpu.gyp:gpu_unittests',
-            '../ipc/ipc.gyp:ipc_tests',
-            '../ipc/mojo/ipc_mojo.gyp:ipc_mojo_unittests',
-            '../jingle/jingle.gyp:jingle_unittests',
-            '../media/media.gyp:media_unittests',
-            '../media/cast/cast.gyp:cast_unittests',
-            '../mojo/mojo.gyp:mojo',
-            '../mojo/mojo_base.gyp:mojo_common_unittests',
-            '../net/net.gyp:net_unittests',
-            '../ppapi/ppapi_internal.gyp:ppapi_tests',
-            '../printing/printing.gyp:printing_unittests',
-            '../sql/sql.gyp:sql_unittests',
-            '../skia/skia_tests.gyp:skia_unittests',
-            '../sync/sync.gyp:sync_unit_tests',
-
-            # TODO(GYP): the Blink test targets should be public, but
-            # currently aren't. all_blink puls them in, though
-            # "//third_party/WebKit/Source/platform:heap_unittests",
-            # "//third_party/WebKit/Source/platform:platform_unittests",
-            # "//third_party/WebKit/Source/wtf:wtf_unittests",
-            '../third_party/WebKit/public/all.gyp:all_blink',
-
-            '../third_party/cacheinvalidation/cacheinvalidation.gyp:cacheinvalidation_unittests',
-
-            # TODO(GYP): Needed only w/ cld_version==1. What configs set that?
-            '../third_party/cld/cld.gyp:cld',
-
-            # TODO(GYP): This is needed only w/ use_system_fontconfig==0. What configs set that?
-            #'../third_party/fontconfig/fontconfig.gyp:fontconfig',
-
-            # TODO(GYP): This will be pulled in automatically when enable_webrtc==true.
-            # For now pull it in manually so that it doesn't regress.
-            '../third_party/libsrtp/libsrtp.gyp:libsrtp',
-
-            '../third_party/mojo/mojo_edk_tests.gyp:mojo_system_unittests',
-            '../third_party/mojo/mojo_edk_tests.gyp:mojo_public_bindings_unittests',
-            '../third_party/mojo/mojo_edk_tests.gyp:mojo_public_environment_unittests',
-            '../third_party/mojo/mojo_edk_tests.gyp:mojo_public_system_perftests',
-            '../third_party/mojo/mojo_edk_tests.gyp:mojo_public_system_unittests',
-            '../third_party/mojo/mojo_edk_tests.gyp:mojo_public_utility_unittests',
-            '../third_party/pdfium/samples/samples.gyp:pdfium_test',
-
-            # TODO(GYP): Verify that this is no longer needed.
-            '../third_party/smhasher/smhasher.gyp:pmurhash',
-
-            # TODO(GYP): This will be pulled in automatically when enable_webrtc==true.
-            # For now pull it in manually so that it doesn't regress.
-            '../third_party/usrsctp/usrsctp.gyp:usrsctplib',
-
-            '../tools/gn/gn.gyp:gn',
-            '../tools/gn/gn.gyp:gn_unittests',
-            '../ui/accessibility/accessibility.gyp:accessibility_unittests',
-            '../ui/app_list/app_list.gyp:app_list_unittests',
-            '../ui/base/ui_base_tests.gyp:ui_base_unittests',
-            '../ui/display/display.gyp:display_unittests',
-            '../ui/events/events.gyp:events_unittests',
-            '../ui/gfx/gfx_tests.gyp:gfx_unittests',
-            '../ui/touch_selection/ui_touch_selection.gyp:ui_touch_selection_unittests',
-            '../url/url.gyp:url_unittests',
-          ],
-          'conditions': [
-            ['OS!="win"', {
-              'dependencies': [
-                '../breakpad/breakpad.gyp:symupload',
-              ],
-            }],
-            ['use_x11==1', {
-              'dependencies': [
-                '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
-              ],
-            }],
-            ['toolkit_views==1', {
-              'dependencies': [
-                '../ui/views/views.gyp:views_unittests',
-              ],
-            }],
-            ['use_aura==1', {
-              'dependencies': [
-                '../ui/wm/wm.gyp:wm_unittests',
-              ],
-            }],
-            ['use_ozone==1', {
-              'dependencies': [
-                '../ui/ozone/ozone.gyp:ozone',
-              ],
-            }],
-            ['OS=="win" or OS=="mac" or OS=="android"', {
-              'dependencies': [
-                '../rlz/rlz.gyp:rlz_lib',
-              ],
-            }],
-            ['OS=="android"', {
-              'dependencies': [
-                '../chrome/chrome.gyp:chrome_shell_apk',
-                '../content/content_shell_and_tests.gyp:content_shell_apk',
-              ],
-              'dependencies!': [
-                '../url/url.gyp:url_unittests',
-              ],
-            }],
-            ['OS=="linux"', {
-              'dependencies': [
-                '../dbus/dbus.gyp:dbus_unittests',
-                '../sandbox/sandbox.gyp:sandbox_linux_unittests',
-              ],
-            }],
-          ],
-        },
         {
           'target_name': 'chromium_builder_nacl_win_integration',
           'type': 'none',