Add CFI Linux ToT builder.

scripts/slave/recipes/chromium.expected/full_chromium_fyi_CFI_Linux_ToT.json

Index: scripts/slave/recipes/chromium.expected/full_chromium_fyi_CFI_Linux_ToT.json
diff --git a/scripts/slave/recipes/chromium.expected/full_chromium_fyi_CFI_Linux.json b/scripts/slave/recipes/chromium.expected/full_chromium_fyi_CFI_Linux_ToT.json
similarity index 94%
copy from scripts/slave/recipes/chromium.expected/full_chromium_fyi_CFI_Linux.json
copy to scripts/slave/recipes/chromium.expected/full_chromium_fyi_CFI_Linux_ToT.json
index 18251b3da9f544a8e0058049f5c00b496ca08ad0..334fba1a97f855c9b3a19c744576326b947dc041 100644
--- a/scripts/slave/recipes/chromium.expected/full_chromium_fyi_CFI_Linux.json
+++ b/scripts/slave/recipes/chromium.expected/full_chromium_fyi_CFI_Linux_ToT.json
@@ -7,7 +7,7 @@
       "--master",
       "chromium.fyi",
       "--builder",
-      "CFI Linux",
+      "CFI Linux ToT",
       "--slave",
       "TestSlavename",
       "--spec",
@@ -97,8 +97,9 @@
     ],
     "cwd": "[SLAVE_BUILD]",
     "env": {
-      "GYP_DEFINES": "cfi_vptr=1 clang=1 component=static_library target_arch=x64",
-      "GYP_LINK_CONCURRENCY": "8"
+      "GYP_DEFINES": "cfi_vptr=1 clang=1 clang_use_chrome_plugins=0 component=static_library target_arch=x64",
+      "GYP_LINK_CONCURRENCY": "8",
+      "LLVM_FORCE_HEAD_REVISION": "YES"
     },
     "name": "gclient runhooks"
   },
@@ -131,7 +132,7 @@
       "--paths",
       "{\"build\": \"[BUILD]\", \"checkout\": \"[SLAVE_BUILD]/src\"}",
       "--properties",
-      "{\"buildername\": \"CFI Linux\", \"buildnumber\": 571, \"mastername\": \"chromium.fyi\", \"slavename\": \"TestSlavename\", \"target_platform\": \"linux\"}"
+      "{\"buildername\": \"CFI Linux ToT\", \"buildnumber\": 571, \"mastername\": \"chromium.fyi\", \"slavename\": \"TestSlavename\", \"target_platform\": \"linux\"}"
     ],
     "cwd": "[SLAVE_BUILD]",
     "name": "get compile targets for scripts",
@@ -170,6 +171,9 @@
       "/path/to/tmp/json"
     ],
     "cwd": "[SLAVE_BUILD]",
+    "env": {
+      "LLVM_FORCE_HEAD_REVISION": "YES"
+    },
     "name": "clang_revision",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",
@@ -196,6 +200,9 @@
       "chromium_builder_tests"
     ],
     "cwd": "[SLAVE_BUILD]",
+    "env": {
+      "LLVM_FORCE_HEAD_REVISION": "YES"
+    },
     "name": "compile"
   },
   {