Collect failed "target"s from ninja in the compile step on Waterfall.

scripts/slave/recipes/findit/chromium/compile.expected/compile_failed.json

Index: scripts/slave/recipes/findit/chromium/compile.expected/compile_failed.json
diff --git a/scripts/slave/recipes/findit/chromium/compile.expected/compile_failed.json b/scripts/slave/recipes/findit/chromium/compile.expected/compile_failed.json
index dff031e7c93696a4d4354b50b0dff637117cceed..5c95219b22b02f7634b8b2b7fad1ea8a59499fe2 100644
--- a/scripts/slave/recipes/findit/chromium/compile.expected/compile_failed.json
+++ b/scripts/slave/recipes/findit/chromium/compile.expected/compile_failed.json
@@ -398,6 +398,8 @@
       "[GOMA_CACHE]",
       "--build-tool",
       "ninja",
+      "--ninja-compile-failure",
+      "/path/to/tmp/json",
       "--compiler",
       "goma",
       "--goma-jsonstatus",
@@ -413,11 +415,18 @@
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@",
       "step returned non-zero exit code: 1",
-      "@@@STEP_LOG_LINE@json.output (invalid)@null@@@",
-      "@@@STEP_LOG_END@json.output (invalid)@@@",
-      "@@@STEP_LOG_LINE@exception@TypeError(\"'NoneType' object has no attribute '__getitem__'\",)@@@",
-      "@@@STEP_LOG_END@exception@@@",
-      "@@@STEP_WARNINGS@@@"
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"notice\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"infra_status\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@        \"ping_status_code\": 200@@@",
+      "@@@STEP_LOG_LINE@json.output@      }@@@",
+      "@@@STEP_LOG_LINE@json.output@    }@@@",
+      "@@@STEP_LOG_LINE@json.output@  ]@@@",
+      "@@@STEP_LOG_LINE@json.output@}@@@",
+      "@@@STEP_LOG_END@json.output@@@",
+      "@@@STEP_FAILURE@@@",
+      "@@@SET_BUILD_PROPERTY@compile_failures@{\"failed_targets\": [\"obj/path/to/file.o\"], \"unknown_targets\": [], \"unrecognized_format\": false}@@@"
     ]
   },
   {