[Mac/GN] Fix Crashpad build and include some targets in gn_all.

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 284d1006aa6a8101e7f5e6c7b93e3dc1d9572636..006fcc45b9653f277d84be33621c2fcc905801cb 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -578,6 +578,7 @@ group("both_gn_and_gyp") {
   } else if (!is_android && !is_ios) {
     deps += [ "//breakpad:symupload($host_toolchain)" ]
   }
+
   if (is_chromecast) {
     deps += [ "//chromecast:cast_shell" ]
   }
@@ -586,6 +587,13 @@ group("both_gn_and_gyp") {
     deps += [ "//media/cast:cast_h264_vt_encoder_unittests" ]
   }
 
+  if (is_mac || is_win) {
+    deps += [
+      "//third_party/crashpad/crashpad/handler:crashpad_handler",
+      "//third_party/crashpad/crashpad/tools:crashpad_database_util",
+    ]
+  }
+
   if (use_openh264) {
     deps += [
       "//third_party/openh264:common",