Use only one tester for debug Linux since we're swarming the tests now.

scripts/slave/recipe_modules/chromium/chromium_linux.py

Index: scripts/slave/recipe_modules/chromium/chromium_linux.py
diff --git a/scripts/slave/recipe_modules/chromium/chromium_linux.py b/scripts/slave/recipe_modules/chromium/chromium_linux.py
index 014c2ea5d689d8351fd6d32b98cd2d075227afab..872088f187b56c2dcb610abaa1db402c4f98bd3e 100644
--- a/scripts/slave/recipe_modules/chromium/chromium_linux.py
+++ b/scripts/slave/recipe_modules/chromium/chromium_linux.py
@@ -109,7 +109,7 @@ SPEC = {
       'enable_swarming': True,
       'use_isolate': True,
     },
-    'Linux Tests (dbg)(1)': {
+    'Linux Tests (dbg)': {
       'recipe_config': 'chromium',
       'chromium_config_kwargs': {
         'BUILD_CONFIG': 'Debug',
@@ -120,6 +120,7 @@ SPEC = {
         steps.generate_gtest,
       ],
       'tests': [
+        steps.NaclIntegrationTest(),
         steps.TelemetryUnitTests(),
         steps.TelemetryPerfUnitTests(),
       ],
@@ -129,25 +130,6 @@ SPEC = {
       },
       'enable_swarming': True,
     },
-    'Linux Tests (dbg)(2)': {
-      'recipe_config': 'chromium',
-      'chromium_config_kwargs': {
-        'BUILD_CONFIG': 'Debug',
-        'TARGET_BITS': 64,
-      },
-      'bot_type': 'tester',
-      'test_generators': [
-        steps.generate_gtest,
-      ],
-      'tests': [
-        steps.NaclIntegrationTest(),
-      ],
-      'parent_buildername': 'Linux Builder (dbg)',
-      'testing': {
-        'platform': 'linux',
-      },
-      'enable_swarming': True,
-    },
 
     'Linux Clang (dbg)': {
       'recipe_config': 'chromium_clang',