Fill is_chrome_signin_password field in the password entry pings.

components/safe_browsing/common/BUILD.gn

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 source_set("common") {
   sources = [
     "safebrowsing_constants.cc",
     "safebrowsing_constants.h",
-    "safebrowsing_message_generator.cc",
-    "safebrowsing_message_generator.h",
-    "safebrowsing_messages.h",
-    "safebrowsing_switches.cc",
-    "safebrowsing_switches.h",
-    "safebrowsing_types.h",
   ]
+  if (!is_ios) {
+    sources += [
+      "safebrowsing_message_generator.cc",
+      "safebrowsing_message_generator.h",
+      "safebrowsing_messages.h",
+      "safebrowsing_switches.cc",
+      "safebrowsing_switches.h",
+      "safebrowsing_types.h",
+    ]
+  }
 
   deps = [
     "//base",
-    "//ipc",
-    "//url/ipc:url_ipc",
   ]
+
+  if (!is_ios) {
+    deps += [
+      "//ipc",
+      "//url/ipc:url_ipc",
+    ]
+  }
 }
 
 static_library("safe_browsing_prefs") {
   sources = [
     "safe_browsing_prefs.cc",
     "safe_browsing_prefs.h",
   ]
   deps = [
     "//base:base",
     "//components/prefs",
   ]
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
     "safe_browsing_prefs_unittest.cc",
   ]
   deps = [
     ":safe_browsing_prefs",
     "//base:base",
     "//base/test:test_support",
     "//components/prefs:test_support",
     "//testing/gtest",
   ]
 }