Move IPC fuzzer switches and helpers from chrome/common to content/common.

chrome/renderer/BUILD.gn

Index: chrome/renderer/BUILD.gn
diff --git a/chrome/renderer/BUILD.gn b/chrome/renderer/BUILD.gn
index c4a9eb951ba9f32ec858d930627346c1000a4139..7b963235773052c591760c0fbd9ac88b3492737a 100644
--- a/chrome/renderer/BUILD.gn
+++ b/chrome/renderer/BUILD.gn
@@ -4,7 +4,6 @@
 
 import("//build/config/features.gni")
 import("//tools/grit/grit_rule.gni")
-import("//tools/ipc_fuzzer/ipc_fuzzer.gni")
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("../chrome_renderer.gypi") ],
@@ -182,10 +181,6 @@ static_library("renderer") {
       "spellchecker/hunspell_engine.h",
     ]
   }
-
-  if (enable_ipc_fuzzer) {
-    configs += [ "//tools/ipc_fuzzer:ipc_fuzzer_config" ]
-  }
 }
 
 # In GYP this is part of test_support_common.