gn_isolate_map: Use the new location of the dawn_end2end_tests target

//third_party/dawn:dawn_end2end_tests has been moved under
//third_party/dawn/src/tests. Replace the _tmp target in gn_isolate_map
with the new location of dawn_end2end_tests.

Bug: chromium:1064305
Change-Id: I92eb438362258c668cd3babc99be947c91ba2b8c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2144968Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#758772}

testing/buildbot/gn_isolate_map.pyl

@@ -724,8 +724,8 @@
     "label": "//crypto:crypto_unittests",
     "type": "console_test_launcher",
   },
-  "dawn_end2end_tests_tmp": {
-    "label": "//third_party/dawn/src/tests:dawn_end2end_tests_tmp",
+  "dawn_end2end_tests": {
+    "label": "//third_party/dawn/src/tests:dawn_end2end_tests",
     "type": "raw",
   },
   "dawn_perf_tests": {

testing/buildbot/test_suites.pyl

@@ -1893,7 +1893,7 @@
           '--no-use-spvc',
           '--no-use-spvc-parser',
         ],
-        'test': 'dawn_end2end_tests_tmp',
+        'test': 'dawn_end2end_tests',
       },
       'dawn_end2end_skip_validation_tests': {
         'desktop_args': [
@@ -1902,7 +1902,7 @@
           '--test-launcher-retry-limit=0',
           '--skip-validation',
         ],
-        'test': 'dawn_end2end_tests_tmp',
+        'test': 'dawn_end2end_tests',
       },
       'dawn_end2end_tests': {
         'desktop_args': [
@@ -1910,7 +1910,6 @@
           # Dawn test retries deliberately disabled to prevent flakiness.
           '--test-launcher-retry-limit=0',
         ],
-        'test': 'dawn_end2end_tests_tmp',
       },
       'dawn_end2end_use_spvc_parser_tests': {
         'desktop_args': [
@@ -1920,7 +1919,7 @@
           '--use-spvc',
           '--use-spvc-parser',
         ],
-        'test': 'dawn_end2end_tests_tmp',
+        'test': 'dawn_end2end_tests',
       },
       'dawn_end2end_use_spvc_tests': {
         'desktop_args': [
@@ -1930,7 +1929,7 @@
           '--use-spvc',
           '--no-use-spvc-parser',
         ],
-        'test': 'dawn_end2end_tests_tmp',
+        'test': 'dawn_end2end_tests',
       },
       'dawn_end2end_validation_layers_tests': {
         'desktop_args': [
@@ -1939,7 +1938,7 @@
           '--test-launcher-retry-limit=0',
           '--enable-backend-validation',
         ],
-        'test': 'dawn_end2end_tests_tmp',
+        'test': 'dawn_end2end_tests',
       },
       'dawn_end2end_wire_tests': {
         'desktop_args': [
@@ -1948,7 +1947,7 @@
           '--test-launcher-retry-limit=0',
           '--use-wire',
         ],
-        'test': 'dawn_end2end_tests_tmp',
+        'test': 'dawn_end2end_tests',
       },
     },
 
@@ -1963,7 +1962,7 @@
           '--no-use-spvc',
           '--no-use-spvc-parser',
         ],
-        'test': 'dawn_end2end_tests_tmp',
+        'test': 'dawn_end2end_tests',
       },
       'dawn_end2end_skip_validation_tests': {
         'desktop_args': [
@@ -1972,7 +1971,7 @@
           '--test-launcher-retry-limit=0',
           '--skip-validation',
         ],
-        'test': 'dawn_end2end_tests_tmp',
+        'test': 'dawn_end2end_tests',
       },
       'dawn_end2end_tests': {
         'desktop_args': [
@@ -1980,7 +1979,6 @@
           # Dawn test retries deliberately disabled to prevent flakiness.
           '--test-launcher-retry-limit=0',
         ],
-        'test': 'dawn_end2end_tests_tmp',
       },
       'dawn_end2end_use_spvc_parser_tests': {
         'desktop_args': [
@@ -1990,7 +1988,7 @@
           '--use-spvc',
           '--use-spvc-parser',
         ],
-        'test': 'dawn_end2end_tests_tmp',
+        'test': 'dawn_end2end_tests',
       },
       'dawn_end2end_use_spvc_tests': {
         'desktop_args': [
@@ -2000,7 +1998,7 @@
           '--use-spvc',
           '--no-use-spvc-parser',
         ],
-        'test': 'dawn_end2end_tests_tmp',
+        'test': 'dawn_end2end_tests',
       },
       'dawn_end2end_validation_layers_tests': {
         'desktop_args': [
@@ -2009,7 +2007,7 @@
           '--test-launcher-retry-limit=0',
           '--enable-backend-validation',
         ],
-        'test': 'dawn_end2end_tests_tmp',
+        'test': 'dawn_end2end_tests',
       },
       'dawn_end2end_wire_tests': {
         'desktop_args': [
@@ -2018,7 +2016,7 @@
           '--test-launcher-retry-limit=0',
           '--use-wire',
         ],
-        'test': 'dawn_end2end_tests_tmp',
+        'test': 'dawn_end2end_tests',
       },
       'gl_tests': {
         'desktop_args': [