Sort GYP and GN files under ppapi

ppapi/thunk/BUILD.gn

Index: ppapi/thunk/BUILD.gn
diff --git a/ppapi/thunk/BUILD.gn b/ppapi/thunk/BUILD.gn
index e507816cb2a55553fbbe1dcb988bb2c5db677544..8e66d9230810bcd4fd0e2ec31c8ce048eb61a306 100644
--- a/ppapi/thunk/BUILD.gn
+++ b/ppapi/thunk/BUILD.gn
@@ -7,10 +7,10 @@ source_set("thunk") {
     "enter.cc",
     "enter.h",
     "ppb_audio_api.h",
-    "ppb_audio_config_api.h",
-    "ppb_audio_config_thunk.cc",
     "ppb_audio_buffer_api.h",
     "ppb_audio_buffer_thunk.cc",
+    "ppb_audio_config_api.h",
+    "ppb_audio_config_thunk.cc",
     "ppb_audio_input_api.h",
     "ppb_audio_thunk.cc",
     "ppb_broker_api.h",
@@ -53,14 +53,14 @@ source_set("thunk") {
     "ppb_graphics_3d_api.h",
     "ppb_graphics_3d_thunk.cc",
     "ppb_host_resolver_api.h",
-    "ppb_host_resolver_thunk.cc",
     "ppb_host_resolver_private_api.h",
     "ppb_host_resolver_private_thunk.cc",
+    "ppb_host_resolver_thunk.cc",
     "ppb_image_data_api.h",
     "ppb_image_data_thunk.cc",
     "ppb_input_event_api.h",
-    "ppb_input_event_thunk.cc",
     "ppb_input_event_private_thunk.cc",
+    "ppb_input_event_thunk.cc",
     "ppb_instance_api.h",
     "ppb_instance_private_thunk.cc",
     "ppb_instance_thunk.cc",
@@ -98,12 +98,12 @@ source_set("thunk") {
     "ppb_tcp_socket_thunk.cc",
     "ppb_text_input_thunk.cc",
     "ppb_truetype_font_api.h",
-    "ppb_truetype_font_singleton_api.h",
     "ppb_truetype_font_dev_thunk.cc",
+    "ppb_truetype_font_singleton_api.h",
     "ppb_udp_socket_api.h",
-    "ppb_udp_socket_thunk.cc",
     "ppb_udp_socket_private_api.h",
     "ppb_udp_socket_private_thunk.cc",
+    "ppb_udp_socket_thunk.cc",
     "ppb_uma_private_thunk.cc",
     "ppb_uma_singleton_api.h",
     "ppb_url_loader_api.h",
@@ -147,8 +147,8 @@ source_set("thunk") {
       "ppb_broker_thunk.cc",
       "ppb_browser_font_trusted_thunk.cc",
       "ppb_buffer_thunk.cc",
-      "ppb_content_decryptor_private_thunk.cc",
       "ppb_char_set_thunk.cc",
+      "ppb_content_decryptor_private_thunk.cc",
       "ppb_flash_clipboard_thunk.cc",
       "ppb_flash_device_id_thunk.cc",
       "ppb_flash_drm_thunk.cc",
@@ -157,8 +157,8 @@ source_set("thunk") {
       "ppb_flash_font_file_thunk.cc",
       "ppb_flash_fullscreen_thunk.cc",
       "ppb_flash_menu_thunk.cc",
-      "ppb_flash_thunk.cc",
       "ppb_flash_message_loop_thunk.cc",
+      "ppb_flash_thunk.cc",
       "ppb_gles_chromium_texture_mapping_thunk.cc",
       "ppb_pdf_thunk.cc",
       "ppb_platform_verification_private_thunk.cc",