Add breakpad component to GN build.

components/BUILD.gn

Index: components/BUILD.gn
diff --git a/components/BUILD.gn b/components/BUILD.gn
index c6bdb0aa75d124aec920793de972cbbd96a12167..ebc1e63614b5175d6bcc9374bf46a36eb54ab65c 100644
--- a/components/BUILD.gn
+++ b/components/BUILD.gn
@@ -16,6 +16,8 @@ group("all_components") {
     "//components/bookmarks/browser",
     "//components/bookmarks/common",
     "//components/bookmarks/test",
+    "//components/breakpad/app",
+    "//components/breakpad/browser",
     "//components/captive_portal",
     "//components/cdm/browser",
     "//components/cdm/common",
@@ -106,6 +108,8 @@ group("all_components") {
       "//components/autofill/content/browser",  # Blocked on content/blink.
       "//components/autofill/content/common",  # Blocked on content.
       "//components/autofill/content/renderer",  # Blocked on content/blink.
+      "//components/breakpad/app",  # Should work, needs checking.
+      "//components/breakpad/browser",  # Should work, needs checking.
       "//components/captive_portal",  # Should work, needs checking.
       "//components/cloud_devices/common",  # Should work, needs checking.
       "//components/cdm/browser",  # Blocked on content.