Give the clang upload bots shorter names.

scripts/slave/recipes/chromium_upload_clang.py

Index: scripts/slave/recipes/chromium_upload_clang.py
diff --git a/scripts/slave/recipes/chromium_clang_upload.py b/scripts/slave/recipes/chromium_upload_clang.py
similarity index 94%
rename from scripts/slave/recipes/chromium_clang_upload.py
rename to scripts/slave/recipes/chromium_upload_clang.py
index 2dfb6dd452defdfb7f3781ab20a62bbbfee980e1..5a85aee3d45b836e796bff1c2c44fabfacc40e17 100644
--- a/scripts/slave/recipes/chromium_clang_upload.py
+++ b/scripts/slave/recipes/chromium_upload_clang.py
@@ -20,7 +20,7 @@ DEPS = [
 BUILDERS = freeze({
   'tryserver.chromium.linux': {
     'builders': {
-      'linux_chromium_clang_upload': {
+      'linux_upload_clang': {
         'chromium_config_kwargs': {
           'BUILD_CONFIG': 'Release',
           'TARGET_PLATFORM': 'linux',
@@ -36,7 +36,7 @@ BUILDERS = freeze({
   },
   'tryserver.chromium.mac': {
     'builders': {
-      'mac_chromium_clang_upload': {
+      'mac_upload_clang': {
         'chromium_config_kwargs': {
           'BUILD_CONFIG': 'Release',
           'TARGET_PLATFORM': 'mac',
@@ -47,7 +47,7 @@ BUILDERS = freeze({
   },
   'tryserver.chromium.win': {
     'builders': {
-      'win_chromium_clang_upload': {
+      'win_upload_clang': {
         'chromium_config_kwargs': {
           'BUILD_CONFIG': 'Release',
           'TARGET_PLATFORM': 'win',