Add most remaining "fast" test suites to the Linux GN bot.

testing/buildbot/tryserver.chromium.linux.json

 {
   "android_chromium_gn_compile_dbg": {
     "additional_compile_targets": [
       "chrome_shell_apk"
     ],
     "gtest_tests": []
   },
   "android_chromium_gn_compile_rel": {
     "additional_compile_targets": [
       "chrome_shell_apk"
@@ skipping 154 matching lines @@
     "gtest_tests": [
       {
         "test": "base_unittests"
       }
     ]
   },
   "linux_chromium_gn_rel": {
     "additional_compile_targets": [
       "browser_tests",
       "content_browsertests",
-      "content_unittests",
-      "events_unittests",
       "extensions_browsertests",
-      "extensions_unittests",
-      "gcm_unit_tests",
-      "gfx_unittests",
-      "gn_unittests",
-      "google_apis_unittests",
-      "gpu_unittests",
       "html_viewer_unittests",
       "interactive_ui_tests",
-      "ipc_mojo_unittests",
-      "ipc_tests",
-      "jingle_unittests",
       "mandoline:all",
       "media_unittests",
-      "nacl_loader_unittests",
       "net_unittests",
-      "ppapi_unittests",
-      "printing_unittests",
-      "remoting_unittests",
-      "sandbox_linux_unittests",
-      "skia_unittests",
-      "sql_unittests",
       "sync_integration_tests",
-      "sync_unit_tests",
-      "ui_base_unittests",
-      "ui_touch_selection_unittests",
       "unit_tests",
-      "url_unittests",
-      "view_manager_service_unittests",
-      "views_unittests",
-      "wm_unittests"
+      "view_manager_service_unittests"
     ],
     "gtest_tests": [
       {
         "test": "accessibility_unittests"
       },
       {
         "test": "app_list_unittests"
       },
       {
         "test": "aura_unittests"
@@ skipping 13 matching lines @@
       {
         "test": "chromedriver_unittests"
       },
       {
         "test": "components_browsertests"
       },
       {
         "test": "components_unittests"
       },
       {
+        "test": "content_unittests"
+      },
+      {
         "test": "crypto_unittests"
       },
       {
         "test": "dbus_unittests"
       },
       {
         "test": "device_unittests"
       },
       {
         "test": "display_unittests"
+      },
+      {
+        "test": "events_unittests"
+      },
+      {
+        "test": "extensions_unittests"
+      },
+      {
+        "test": "extensions_unittests"
+      },
+      {
+        "test": "gcm_unit_tests"
+      },
+      {
+        "test": "gfx_unittests"
+      },
+      {
+        "test": "gn_unittests"
+      },
+      {
+        "test": "google_apis_unittests"
+      },
+      {
+        "test": "gpu_unittests"
+      },
+      {
+        "test": "ipc_mojo_unittests"
+      },
+      {
+        "test": "ipc_tests"
+      },
+      {
+        "test": "jingle_unittests"
+      },
+      {
+        "test": "nacl_loader_unittests"
+      },
+      {
+        "test": "ppapi_unittests"
+      },
+      {
+        "test": "printing_unittests"
+      },
+      {
+        "test": "remoting_unittests"
+      },
+      {
+        "test": "sandbox_linux_unittests"
+      },
+      {
+        "test": "skia_unittests"
+      },
+      {
+        "test": "sql_unittests"
+      },
+      {
+        "test": "sync_unit_tests"
+      },
+      {
+        "test": "ui_base_unittests"
+      },
+      {
+        "test": "ui_touch_selection_unittests"
+      },
+      {
+        "test": "url_unittests"
+      },
+      {
+        "test": "views_unittests"
+      },
+      {
+        "test": "wm_unittests"
       }
     ]
   }
 }