Reland "Convert some mojo_base typemaps to GN targets"

This is a reland of aa7438aa

Unmodified from the original CL, as breakage was from a precursor
that has since been fixed and relanded.

Original change's description:
> Convert some mojo_base typemaps to GN targets
>
> Uses new GN-based typemap definitions to replace some typemap files in
> mojo/public/cpp/base.
>
> Bug: 1059389
> Change-Id: If1389c9ceec8ae90df753895af0abd9f72c704a0
> Tbr: dtapuska@chromium.org
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2090723
> Reviewed-by: Ken Rockot <rockot@google.com>
> Reviewed-by: Oksana Zhuravlova <oksamyt@chromium.org>
> Reviewed-by: Tom Sepez <tsepez@chromium.org>
> Reviewed-by: Daniel Cheng <dcheng@chromium.org>
> Commit-Queue: Ken Rockot <rockot@google.com>
> Cr-Commit-Position: refs/heads/master@{#748056}

Bug: 1059389
Change-Id: I5bbe5afff09493b3394f8922c3fe190e731305b7
Tbr: dcheng@chromium.org
Tbr: tsepez@chromium.org
Tbr: oksamyt@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2095929Reviewed-by: Ken Rockot <rockot@google.com>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Ken Rockot <rockot@google.com>
Cr-Commit-Position: refs/heads/master@{#748569}

mojo/public/cpp/base/BUILD.gn

@@ -23,6 +23,23 @@ component("base") {
   ]
 }
 
+component("typemap_traits") {
+  output_name = "mojo_base_typemap_traits"
+
+  sources = [
+    "big_string_mojom_traits.cc",
+    "big_string_mojom_traits.h",
+  ]
+
+  defines = [ "IS_MOJO_BASE_TRAITS_IMPL" ]
+
+  public_deps = [
+    ":shared_typemap_traits",
+    "//base",
+    "//mojo/public/cpp/base",
+  ]
+}
+
 # Normally typemap traits sources should be build directly into mojom targets
 # via the typemap file. This target is for typemapped mojo_base types whose
 # traits are shared between chromium and blink variants.

mojo/public/cpp/base/big_buffer.typemap

-# 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.
-
-mojom = "//mojo/public/mojom/base/big_buffer.mojom"
-public_headers = [ "//mojo/public/cpp/base/big_buffer.h" ]
-traits_headers = [ "//mojo/public/cpp/base/big_buffer_mojom_traits.h" ]
-public_deps = [
-  "//mojo/public/cpp/base",
-  "//mojo/public/cpp/base:shared_typemap_traits",
-]
-type_mappings =
-    [ "mojo_base.mojom.BigBuffer=::mojo_base::BigBuffer[move_only]" ]

mojo/public/cpp/base/big_string.typemap

-# Copyright 2018 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.
-
-mojom = "//mojo/public/mojom/base/big_string.mojom"
-public_headers = []
-traits_headers = [ "//mojo/public/cpp/base/big_string_mojom_traits.h" ]
-sources = [
-  "//mojo/public/cpp/base/big_string_mojom_traits.cc",
-  "//mojo/public/cpp/base/big_string_mojom_traits.h",
-]
-public_deps = [
-  "//mojo/public/cpp/base",
-  "//mojo/public/cpp/base:shared_typemap_traits",
-]
-
-type_mappings = [ "mojo_base.mojom.BigString=::std::string" ]

mojo/public/cpp/base/big_string_mojom_traits.h

@@ -15,7 +15,7 @@
 namespace mojo {
 
 template <>
-struct COMPONENT_EXPORT(MOJO_BASE_MOJOM)
+struct COMPONENT_EXPORT(MOJO_BASE_TRAITS)
     StructTraits<mojo_base::mojom::BigStringDataView, std::string> {
   static mojo_base::BigBuffer data(const std::string& str);
 

mojo/public/cpp/base/generic_pending_receiver.typemap

-# Copyright 2019 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.
-
-mojom = "//mojo/public/mojom/base/generic_pending_receiver.mojom"
-public_headers = [ "//mojo/public/cpp/bindings/generic_pending_receiver.h" ]
-traits_headers =
-    [ "//mojo/public/cpp/base/generic_pending_receiver_mojom_traits.h" ]
-public_deps = [
-  "//mojo/public/cpp/bindings",
-]
-deps = [
-  "//mojo/public/cpp/base:shared_typemap_traits",
-]
-type_mappings = [ "mojo_base.mojom.GenericPendingReceiver=::mojo::GenericPendingReceiver[move_only,nullable_is_same_type]" ]

mojo/public/cpp/base/time.typemap

-# 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.
-
-mojom = "//mojo/public/mojom/base/time.mojom"
-public_headers = [ "//base/time/time.h" ]
-traits_headers = [ "//mojo/public/cpp/base/time_mojom_traits.h" ]
-public_deps = [
-  "//base",
-  "//mojo/public/cpp/base:shared_typemap_traits",
-]
-
-type_mappings = [
-  "mojo_base.mojom.Time=::base::Time[copyable_pass_by_value]",
-  "mojo_base.mojom.TimeDelta=::base::TimeDelta[copyable_pass_by_value]",
-  "mojo_base.mojom.TimeTicks=::base::TimeTicks[copyable_pass_by_value]",
-]

mojo/public/cpp/base/typemaps.gni

@@ -4,13 +4,10 @@
 
 typemaps = [
   "//mojo/public/cpp/base/application_state.typemap",
-  "//mojo/public/cpp/base/big_buffer.typemap",
-  "//mojo/public/cpp/base/big_string.typemap",
   "//mojo/public/cpp/base/file_error.typemap",
   "//mojo/public/cpp/base/file_info.typemap",
   "//mojo/public/cpp/base/file_path.typemap",
   "//mojo/public/cpp/base/file.typemap",
-  "//mojo/public/cpp/base/generic_pending_receiver.typemap",
   "//mojo/public/cpp/base/read_only_buffer.typemap",
   "//mojo/public/cpp/base/memory_allocator_dump_cross_process_uid.typemap",
   "//mojo/public/cpp/base/memory_pressure_level.typemap",
@@ -22,8 +19,5 @@ typemaps = [
   "//mojo/public/cpp/base/logfont_win.typemap",
   "//mojo/public/cpp/base/text_direction.typemap",
   "//mojo/public/cpp/base/thread_priority.typemap",
-  "//mojo/public/cpp/base/time.typemap",
   "//mojo/public/cpp/base/token.typemap",
-  "//mojo/public/cpp/base/unguessable_token.typemap",
-  "//mojo/public/cpp/base/values.typemap",
 ]

mojo/public/cpp/base/unguessable_token.typemap

-# 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.
-
-mojom = "//mojo/public/mojom/base/unguessable_token.mojom"
-public_headers = [ "//base/unguessable_token.h" ]
-traits_headers = [ "//mojo/public/cpp/base/unguessable_token_mojom_traits.h" ]
-public_deps = [
-  "//mojo/public/cpp/base:shared_typemap_traits",
-]
-
-type_mappings = [ "mojo_base.mojom.UnguessableToken=::base::UnguessableToken" ]

mojo/public/cpp/base/values.typemap

-# Copyright 2018 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.
-
-mojom = "//mojo/public/mojom/base/values.mojom"
-public_headers = [ "//base/values.h" ]
-traits_headers = [ "//mojo/public/cpp/base/values_mojom_traits.h" ]
-public_deps = [
-  "//base",
-  "//mojo/public/cpp/base:shared_typemap_traits",
-]
-type_mappings = [
-  "mojo_base.mojom.Value=::base::Value[move_only]",
-  "mojo_base.mojom.DictionaryValue=::base::Value[move_only]",
-  "mojo_base.mojom.ListValue=::base::Value[move_only]",
-]

mojo/public/mojom/base/BUILD.gn

@@ -43,4 +43,138 @@ mojom_component("base") {
 
   output_prefix = "mojo_base_mojom"
   macro_prefix = "MOJO_BASE_MOJOM"
+
+  common_typemaps = [
+    ":big_buffer_typemap",
+    ":generic_pending_receiver_typemap",
+    ":time_typemap",
+    ":unguessable_token_typemap",
+    ":value_typemap",
+  ]
+
+  cpp_typemaps = common_typemaps + [ ":big_string_typemap" ]
+
+  blink_cpp_typemaps =
+      common_typemaps +
+      [ "//third_party/blink/renderer/platform/mojo:big_string_typemap" ]
+}
+
+mojom_cpp_typemap("big_buffer_typemap") {
+  types = [
+    {
+      mojom = "mojo_base.mojom.BigBuffer"
+      cpp = "::mojo_base::BigBuffer"
+      move_only = true
+    },
+  ]
+  public_headers = [
+    "//mojo/public/cpp/base/big_buffer.h",
+    "//mojo/public/cpp/base/big_buffer_mojom_traits.h",
+  ]
+  public_deps = [
+    "//mojo/public/cpp/base",
+    "//mojo/public/cpp/base:shared_typemap_traits",
+  ]
+}
+
+mojom_cpp_typemap("big_string_typemap") {
+  types = [
+    {
+      mojom = "mojo_base.mojom.BigString"
+      cpp = "::std::string"
+    },
+  ]
+  public_headers = [ "//mojo/public/cpp/base/big_string_mojom_traits.h" ]
+  public_deps = [
+    "//mojo/public/cpp/base",
+    "//mojo/public/cpp/base:typemap_traits",
+  ]
+}
+
+mojom_cpp_typemap("generic_pending_receiver_typemap") {
+  types = [
+    {
+      mojom = "mojo_base.mojom.GenericPendingReceiver"
+      cpp = "::mojo::GenericPendingReceiver"
+      move_only = true
+      nullable_is_same_type = true
+    },
+  ]
+  public_headers = [
+    "//mojo/public/cpp/base/generic_pending_receiver_mojom_traits.h",
+    "//mojo/public/cpp/bindings/generic_pending_receiver.h",
+  ]
+  public_deps = [
+    "//mojo/public/cpp/base:shared_typemap_traits",
+    "//mojo/public/cpp/bindings",
+  ]
+}
+
+mojom_cpp_typemap("time_typemap") {
+  types = [
+    {
+      mojom = "mojo_base.mojom.Time"
+      cpp = "::base::Time"
+      copyable_pass_by_value = true
+    },
+    {
+      mojom = "mojo_base.mojom.TimeDelta"
+      cpp = "::base::TimeDelta"
+      copyable_pass_by_value = true
+    },
+    {
+      mojom = "mojo_base.mojom.TimeTicks"
+      cpp = "::base::TimeTicks"
+      copyable_pass_by_value = true
+    },
+  ]
+
+  public_headers = [
+    "//base/time/time.h",
+    "//mojo/public/cpp/base/time_mojom_traits.h",
+  ]
+  public_deps = [
+    "//base",
+    "//mojo/public/cpp/base:shared_typemap_traits",
+  ]
+}
+
+mojom_cpp_typemap("unguessable_token_typemap") {
+  types = [
+    {
+      mojom = "mojo_base.mojom.UnguessableToken"
+      cpp = "::base::UnguessableToken"
+    },
+  ]
+  public_headers = [ "//mojo/public/cpp/base/unguessable_token_mojom_traits.h" ]
+  public_deps = [
+    "//base",
+    "//mojo/public/cpp/base:shared_typemap_traits",
+  ]
+}
+
+mojom_cpp_typemap("value_typemap") {
+  types = [
+    {
+      mojom = "mojo_base.mojom.Value"
+      cpp = "::base::Value"
+      move_only = true
+    },
+    {
+      mojom = "mojo_base.mojom.ListValue"
+      cpp = "::base::Value"
+      move_only = true
+    },
+    {
+      mojom = "mojo_base.mojom.DictionaryValue"
+      cpp = "::base::Value"
+      move_only = true
+    },
+  ]
+
+  public_headers = [ "//mojo/public/cpp/base/values_mojom_traits.h" ]
+  public_deps = [
+    "//base",
+    "//mojo/public/cpp/base:shared_typemap_traits",
+  ]
 }

third_party/blink/public/blink_typemaps.gni

@@ -5,16 +5,12 @@
 typemaps = [
   "//gpu/ipc/common/mailbox_holder_for_blink.typemap",
   "//gpu/ipc/common/sync_token.typemap",
-  "//mojo/public/cpp/base/big_buffer.typemap",
   "//mojo/public/cpp/base/file.typemap",
   "//mojo/public/cpp/base/file_info.typemap",
   "//mojo/public/cpp/base/file_path.typemap",
   "//mojo/public/cpp/base/file_error.typemap",
-  "//mojo/public/cpp/base/generic_pending_receiver.typemap",
   "//mojo/public/cpp/base/shared_memory.typemap",
-  "//mojo/public/cpp/base/time.typemap",
   "//mojo/public/cpp/base/read_only_buffer.typemap",
-  "//mojo/public/cpp/base/unguessable_token.typemap",
   "//services/network/public/cpp/cross_origin_embedder_policy.typemap",
   "//services/network/public/cpp/url_request.typemap",
   "//services/viz/public/cpp/compositing/begin_frame_args_for_blink.typemap",

third_party/blink/renderer/platform/mojo/BUILD.gn

+# Copyright 2020 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.
+
+import("//mojo/public/tools/bindings/mojom.gni")
+
+mojom_cpp_typemap("big_string_typemap") {
+  types = [
+    {
+      mojom = "mojo_base.mojom.BigString"
+      cpp = "::WTF::String"
+      nullable_is_same_type = true
+    },
+  ]
+  public_headers = [
+    "//third_party/blink/renderer/platform/mojo/big_string_mojom_traits.h",
+    "//third_party/blink/renderer/platform/wtf/text/wtf_string.h",
+  ]
+  public_deps = [ "//mojo/public/cpp/base" ]
+}

third_party/blink/renderer/platform/mojo/big_string.typemap

-# Copyright 2018 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.
-
-mojom = "//mojo/public/mojom/base/big_string.mojom"
-public_headers =
-    [ "//third_party/blink/renderer/platform/wtf/text/wtf_string.h" ]
-traits_headers =
-    [ "//third_party/blink/renderer/platform/mojo/big_string_mojom_traits.h" ]
-type_mappings =
-    [ "mojo_base.mojom.BigString=::WTF::String[nullable_is_same_type]" ]

third_party/blink/renderer/platform/mojo/big_string_mojom_traits.h

@@ -5,6 +5,7 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_MOJO_BIG_STRING_MOJOM_TRAITS_H_
 #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_MOJO_BIG_STRING_MOJOM_TRAITS_H_
 
+#include "mojo/public/cpp/base/big_buffer.h"
 #include "mojo/public/cpp/bindings/struct_traits.h"
 #include "mojo/public/mojom/base/big_string.mojom-blink-forward.h"
 #include "third_party/blink/renderer/platform/platform_export.h"

third_party/blink/renderer/platform/mojo/blink_typemaps.gni

@@ -5,7 +5,6 @@
 typemaps = [
   "//media/capture/mojom/video_capture_types_for_blink.typemap",
   "//media/mojo/mojom/audio_parameters.typemap",
-  "//mojo/public/cpp/base/values.typemap",
   "//services/network/public/cpp/http_request_headers.typemap",
   "//services/network/public/cpp/ip_address.typemap",
   "//services/network/public/cpp/ip_endpoint.typemap",
@@ -22,7 +21,6 @@ typemaps = [
   "//third_party/blink/renderer/modules/indexeddb/indexed_db_blink.typemap",
   "//third_party/blink/renderer/platform/blob/serialized_blob.typemap",
   "//third_party/blink/renderer/platform/cookie/canonical_cookie.typemap",
-  "//third_party/blink/renderer/platform/mojo/big_string.typemap",
   "//third_party/blink/renderer/platform/mojo/fetch_api_request_headers.typemap",
   "//third_party/blink/renderer/platform/mojo/kurl.typemap",
   "//third_party/blink/renderer/platform/mojo/security_origin.typemap",