Drop Precise blink builders on chromium.webkit, add corresponding Trusty builders.

scripts/slave/recipe_modules/chromium_tests/chromium_webkit.py

Index: scripts/slave/recipe_modules/chromium_tests/chromium_webkit.py
diff --git a/scripts/slave/recipe_modules/chromium_tests/chromium_webkit.py b/scripts/slave/recipe_modules/chromium_tests/chromium_webkit.py
index 59beb5a39941d7c3b645f9ff332e14fc6b2c4fb7..19aac85b982655f86832b65f2a1fab99666c1b58 100644
--- a/scripts/slave/recipe_modules/chromium_tests/chromium_webkit.py
+++ b/scripts/slave/recipe_modules/chromium_tests/chromium_webkit.py
@@ -298,30 +298,9 @@ SPEC['builders'] = {
     'use_isolate': True,
     'checkout_dir': 'mac_layout',
   },
-  'WebKit Linux Precise': {
-    'chromium_config': 'chromium',
-    'chromium_apply_config': ['mb', 'ninja_confirm_noop'],

[qyearsley, 2016/11/14 18:52:37]

The reason why the flag "--ninja-ensure-up-to-date" was being removed in some
places was because "ninja_confirm_noop" was in this config here but not in
"WebKit Linux Trusty" below.

It seems like if we want to ensure that the build is up to date on one of these
builders, then we probably want to do so on all of them, so perhaps I should
remove it from all or add it to all -- do you know whether it's necessary?

For this CL, to match the behavior before, it also seems like just adding it to
"WebKit Linux Trusty" seems reasonable.

-    'gclient_config': 'chromium',
-    'chromium_config_kwargs': {
-      'BUILD_CONFIG': 'Release',
-      'TARGET_BITS': 64,
-    },
-    'compile_targets': [
-      'blink_tests',
-    ],
-    'tests': [
-      steps.BlinkTest(),
-    ],
-    'testing': {
-      'platform': 'linux',
-    },
-    'enable_swarming': True,
-    'use_isolate': True,
-    'checkout_dir': 'linux_layout',
-  },
   'WebKit Linux Trusty': {
     'chromium_config': 'chromium',
-    'chromium_apply_config': ['mb'],
+    'chromium_apply_config': ['mb', 'ninja_confirm_noop'],
     'gclient_config': 'chromium',
     'chromium_config_kwargs': {
       'BUILD_CONFIG': 'Release',
@@ -340,7 +319,7 @@ SPEC['builders'] = {
     'use_isolate': True,
     'checkout_dir': 'linux_layout',
   },
-  'WebKit Linux Precise ASAN': {
+  'WebKit Linux Trusty ASAN': {
     'chromium_config': 'chromium_clang',
     'chromium_apply_config': ['asan', 'mb'],
     'gclient_config': 'chromium',
@@ -364,7 +343,7 @@ SPEC['builders'] = {
     'use_isolate': True,
     'checkout_dir': 'linux_layout',
   },
-  'WebKit Linux Precise MSAN': {
+  'WebKit Linux Trusty MSAN': {
     'chromium_config': 'chromium_clang',
     'gclient_config': 'chromium',
     'chromium_apply_config': [
@@ -394,7 +373,7 @@ SPEC['builders'] = {
     'use_isolate': True,
     'checkout_dir': 'linux_layout',
   },
-  'WebKit Linux Precise (dbg)': {
+  'WebKit Linux Trusty (dbg)': {
     'chromium_config': 'chromium',
     'chromium_apply_config': ['mb'],
     'gclient_config': 'chromium',
@@ -451,7 +430,7 @@ SPEC['builders'] = {
       'platform': 'linux',
     },
   },
-  'WebKit Linux Precise Leak': {
+  'WebKit Linux Trusty Leak': {
     'chromium_config': 'chromium',
     'chromium_apply_config': ['mb'],
     'gclient_config': 'chromium',