Revert of Add remoting and PPAPI tests to GN build (patchset #7 id:120001 of https://codereview.chromium.org/965633002/)

Reason for revert:
http://build.chromium.org/p/chromium.mac/buildstatus?builder=Mac%20GN&number=4498

ERROR at //remoting/host/BUILD.gn:56:7: Item not found
      "linux/x_server_clipboard.cc",
      ^----------------------------
You were trying to remove "linux/x_server_clipboard.cc"

Original issue's description:
> Add remoting and PPAPI tests to GN build
>
> BUG=
>
> Committed: https://crrev.com/d0437210926b14b1b7e06b2b56174fc92ade9c37
> Cr-Commit-Position: refs/heads/master@{#318539}

TBR=kelvinp@chromium.org,dpranke@chromium.org,brettw@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/970443002

Cr-Commit-Position: refs/heads/master@{#318545}

3 files changed, 2 insertions, 80 deletions

diff --git a/ppapi/BUILD.gn b/ppapi/BUILD.gn
index 7ecb40a..f7ff011 100644
--- a/ppapi/BUILD.gn
+++ b/ppapi/BUILD.gn
@@ -3,8 +3,6 @@
 # found in the LICENSE file.
 
 import("//ppapi/ppapi_sources.gni")
-import("//testing/test.gni")
-
 shared_library("ppapi_tests") {
   sources = ppapi_sources.test_common_source_files +
             ppapi_sources.test_trusted_source_files
@@ -17,76 +15,4 @@ shared_library("ppapi_tests") {
     "//ppapi/shared_impl",
   ]
 }
-
-test("ppapi_unittests") {
-  sources = [
-    "host/resource_message_filter_unittest.cc",
-    "proxy/device_enumeration_resource_helper_unittest.cc",
-    "proxy/file_chooser_resource_unittest.cc",
-    "proxy/file_system_resource_unittest.cc",
-    "proxy/flash_resource_unittest.cc",
-    "proxy/interface_list_unittest.cc",
-    "proxy/mock_resource.cc",
-    "proxy/mock_resource.h",
-    "proxy/nacl_message_scanner_unittest.cc",
-    "proxy/pdf_resource_unittest.cc",
-    "proxy/plugin_dispatcher_unittest.cc",
-    "proxy/plugin_resource_tracker_unittest.cc",
-    "proxy/plugin_var_tracker_unittest.cc",
-    "proxy/ppb_var_unittest.cc",
-    "proxy/ppp_instance_private_proxy_unittest.cc",
-    "proxy/ppp_instance_proxy_unittest.cc",
-    "proxy/ppp_messaging_proxy_unittest.cc",
-    "proxy/printing_resource_unittest.cc",
-    "proxy/raw_var_data_unittest.cc",
-    "proxy/serialized_var_unittest.cc",
-    "proxy/talk_resource_unittest.cc",
-    "proxy/video_decoder_resource_unittest.cc",
-    "proxy/video_encoder_resource_unittest.cc",
-    "proxy/websocket_resource_unittest.cc",
-    "shared_impl/media_stream_audio_track_shared_unittest.cc",
-    "shared_impl/media_stream_buffer_manager_unittest.cc",
-    "shared_impl/media_stream_video_track_shared_unittest.cc",
-    "shared_impl/proxy_lock_unittest.cc",
-    "shared_impl/resource_tracker_unittest.cc",
-    "shared_impl/thread_aware_callback_unittest.cc",
-    "shared_impl/time_conversion_unittest.cc",
-    "shared_impl/tracked_callback_unittest.cc",
-    "shared_impl/var_tracker_unittest.cc",
-  ]
-
-  deps = [
-    "//base/allocator",
-    "//base/test:run_all_unittests",
-    "//base/test:test_support",
-    "//gpu/ipc",
-    "//ipc",
-    "//ipc:test_support",
-    "//media:shared_memory_support",
-    "//ppapi/host",
-    "//ppapi/proxy",
-    "//ppapi/proxy:test_support",
-    "//ppapi/shared_impl",
-    "//ppapi/shared_impl:test_support",
-    "//testing/gmock",
-    "//testing/gtest",
-    "//ui/surface",
-  ]
-}
-
-test("ppapi_perftests") {
-  sources = [
-    "proxy/ppapi_perftests.cc",
-    "proxy/ppp_messaging_proxy_perftest.cc",
-  ]
-
-  deps = [
-    "//base/allocator",
-    "//base/test:test_support",
-    "//ppapi/proxy",
-    "//ppapi/proxy:test_support",
-    "//ppapi/shared_impl",
-    "//ppapi/shared_impl:test_support",
-    "//testing/gtest",
-  ]
-}
+# TODO(GYP) other targets from ppapi_tests.gyp
diff --git a/ppapi/ppapi_host.gypi b/ppapi/ppapi_host.gypi
index 3113ddf..eea53b4 100644
--- a/ppapi/ppapi_host.gypi
+++ b/ppapi/ppapi_host.gypi
@@ -5,7 +5,7 @@
 {
    'targets': [
     {
-      # GN version: //ppapi/host
+      # GN version: //ppapi:ppapi_host
       'target_name': 'ppapi_host',
       'type': '<(component)',
       'dependencies': [
diff --git a/ppapi/ppapi_tests.gypi b/ppapi/ppapi_tests.gypi
index ee4fd54..562903d 100644
--- a/ppapi/ppapi_tests.gypi
+++ b/ppapi/ppapi_tests.gypi
@@ -5,7 +5,6 @@
 {
   'targets': [
     {
-      # GN version: //ppapi:ppapi_tests
       'target_name': 'ppapi_tests',
       'type': 'loadable_module',
       'include_dirs': [
@@ -107,7 +106,6 @@
     },
 
     {
-      # GN version: //ppapi:ppapi_perftests
       'target_name': 'ppapi_perftests',
       'type': 'executable',
       'variables': {
@@ -134,7 +132,6 @@
       ],
     },
     {
-      # GN version: //ppapi:ppapi_unittests
       'target_name': 'ppapi_unittests',
       'type': 'executable',
       'variables': {
@@ -156,7 +153,6 @@
         '../ui/surface/surface.gyp:surface',
       ],
       'sources': [
-        # Note: sources list duplicated in GN build.
         'host/resource_message_filter_unittest.cc',
         'proxy/device_enumeration_resource_helper_unittest.cc',
         'proxy/file_chooser_resource_unittest.cc',