clean up GN targets that are already migrated, add pepper_hash_for_uma.

BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This is the root build file for GN. GN will start processing by loading this
 # file, and recursively load all dependencies until all dependencies are either
 # resolved or known not to exist (which will cause the build to fail). So if
 # you add a new build file, there must be some path of dependencies from this
 # file to your new one or GN won't know about it.
 
@@ skipping 28 matching lines @@
   deps = [
     "//base:base_unittests",
     "//cc:cc_unittests",
     "//chrome",
     "//chrome/test:browser_tests",
     "//chrome/test:interactive_ui_tests",
     "//chrome/test:sync_integration_tests",
     "//chrome/test:unit_tests",
     "//chrome/test/chromedriver:chromedriver_unittests",
     "//components:components_unittests",
+    "//components/policy:policy_templates",
     "//content/shell:content_shell",
     "//content/test:content_browsertests",
     "//content/test:content_perftests",
     "//content/test:content_unittests",
     "//crypto:crypto_unittests",
     "//extensions:extensions_browsertests",
     "//extensions:extensions_unittests",
     "//google_apis/gcm:gcm_unit_tests",
     "//gpu:gpu_unittests",
     "//ipc:ipc_tests",
     "//ipc/mojo:ipc_mojo_unittests",
     "//jingle:jingle_unittests",
     "//media:media_unittests",
     "//media/cast:cast_unittests",
     "//mojo",
+    "//mojo/application",
     "//mojo/common:mojo_common_unittests",
     "//net:hpack_example_generator",
     "//net:hpack_fuzz_mutator",
     "//net:hpack_fuzz_wrapper",
     "//net:net_perftests",
     "//net:net_unittests",
     "//ppapi:ppapi_unittests",
     "//ppapi/examples",  # TODO(GYP): What's the GYP equivalent?
     "//printing:printing_unittests",
     "//skia:skia_unittests",
@@ skipping 209 matching lines @@
       "//media/cast:cast_benchmarks",
       "//media/cast:generate_barcode_video",
       "//media/cast:generate_timecode_audio",
       "//media/cast:tap_proxy",
       "//mojo/application",
       "//net:crash_cache",
       "//net:crl_set_dump",
       "//net:dns_fuzz_stub",
       "//net:gdig",
       "//net:get_server_time",
-
-      #"//net:hpack_example_generator",  # TODO(GYP) rockot in progress
-      #"//net:hpack_fuzz_mutator",  # TODO(GYP) rockot in progress
-      #"//net:hpack_fuzz_wrapper",  # TODO(GYP) rockot in progress
-      #"//net:net_perftests",  # TODO(GYP) rockot in progress
       "//net:net_watcher",  # TODO(GYP): This should be conditional on use_v8_in_net
       "//net:stress_cache",
       "//net:tld_cleanup",
       "//net:run_testserver",
       "//net:dump_cache",
-
-      # "//ppapi:pepper_hash_for_uma",  # TODO(GYP): Implement me.
+      "//ppapi:pepper_hash_for_uma",
       "//ppapi:ppapi_perftests",  # TODO(GYP): Are there other ppapi_* test targets?
       "//skia:filter_fuzz_stub",
       "//skia:image_operations_bench",
       "//sync:run_sync_testserver",
       "//sync:sync_endtoend_tests",
       "//sync/tools:sync_client",
       "//sync/tools:sync_listen_notifications",
       "//testing/gmock:gmock_main",
       "//third_party/codesighs:maptsvdifftool",
       "//third_party/libphonenumber:libphonenumber_unittests",
@@ skipping 340 matching lines @@
       "//ui/touch_selection:ui_touch_selection_unittests",  # PASSES 2/25/2015
       "//ui/views:views_unittests",  # PASSES (*) 2/25/2015
       "//ui/wm:wm_unittests",  # PASSES 2/25/2015
       "//url:url_unittests",  # PASSES 2/25/2015
 
       # Note:
       # (*) Fails but failures match GYP build at time of testing.
     ]
   }
 }