[fuchsia] Make message_port.h into a private library for WebEngine.

The MessagePort conversion functions are no longer used outside of
WebEngine, now that previous clients have migrated to
use //components/cast/message_port instead.

Remove vestigial dep on now-removed 'message_port' target.

Bug: 1081525
Change-Id: Ie3629ff1542b96bfe9594cc5dcb1ef15c671c9c7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2643398
Auto-Submit: Kevin Marshall <kmarshall@chromium.org>
Reviewed-by: Sharon Yang <yangsharon@chromium.org>
Commit-Queue: Sharon Yang <yangsharon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845821}

chromecast/bindings/BUILD.gn

@@ -46,7 +46,6 @@ if (is_fuchsia) {
       "//components/cast/message_port",
       "//fuchsia:cast_fidl",
       "//fuchsia/base",
-      "//fuchsia/base:message_port",
     ]
   }
 }

chromecast/bindings/bindings_manager_fuchsia.cc

@@ -11,7 +11,6 @@
 #include "base/fuchsia/fuchsia_logging.h"
 #include "components/cast/message_port/message_port_fuchsia.h"
 #include "fuchsia/base/mem_buffer_util.h"
-#include "fuchsia/base/message_port.h"
 
 namespace chromecast {
 namespace bindings {

fuchsia/base/BUILD.gn

@@ -56,20 +56,6 @@ source_set("modular") {
   ]
 }
 
-# FIDL/Mojo adapters for MessagePorts.
-source_set("message_port") {
-  sources = [ "message_port.cc" ]
-  public = [ "message_port.h" ]
-  deps = [
-    ":base",
-    "//base",
-    "//mojo/public/cpp/bindings",
-    "//third_party/blink/public/common",
-    "//third_party/blink/public/common:headers",
-    "//third_party/fuchsia-sdk/sdk/fidl/fuchsia.web",
-  ]
-}
-
 source_set("legacymetrics") {
   sources = [
     "legacymetrics_client.cc",

fuchsia/engine/BUILD.gn

@@ -109,7 +109,6 @@ component("web_engine_core") {
     "//content/public/renderer",
     "//fuchsia/base",
     "//fuchsia/base:legacymetrics",
-    "//fuchsia/base:message_port",
     "//fuchsia/base:modular",
     "//fuchsia/cast_streaming",
     "//google_apis",
@@ -191,6 +190,8 @@ component("web_engine_core") {
     "browser/media_player_impl.h",
     "browser/media_resource_provider_service.cc",
     "browser/media_resource_provider_service.h",
+    "browser/message_port.cc",
+    "browser/message_port.h",
     "browser/navigation_controller_impl.cc",
     "browser/navigation_controller_impl.h",
     "browser/navigation_policy_handler.cc",

fuchsia/engine/browser/frame_impl.cc

@@ -35,7 +35,6 @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/was_activated_option.mojom.h"
 #include "fuchsia/base/mem_buffer_util.h"
-#include "fuchsia/base/message_port.h"
 #include "fuchsia/engine/browser/accessibility_bridge.h"
 #include "fuchsia/engine/browser/cast_streaming_session_client.h"
 #include "fuchsia/engine/browser/context_impl.h"
@@ -43,6 +42,7 @@
 #include "fuchsia/engine/browser/frame_layout_manager.h"
 #include "fuchsia/engine/browser/frame_window_tree_host.h"
 #include "fuchsia/engine/browser/media_player_impl.h"
+#include "fuchsia/engine/browser/message_port.h"
 #include "fuchsia/engine/browser/navigation_policy_handler.h"
 #include "fuchsia/engine/browser/web_engine_devtools_controller.h"
 #include "fuchsia/engine/common/cast_streaming.h"

fuchsia/base/message_port.cc → fuchsia/engine/browser/message_port.cc

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "fuchsia/base/message_port.h"
+#include "fuchsia/engine/browser/message_port.h"
 
 #include <stdint.h>
 

fuchsia/base/message_port.h → fuchsia/engine/browser/message_port.h

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef FUCHSIA_BASE_MESSAGE_PORT_H_
-#define FUCHSIA_BASE_MESSAGE_PORT_H_
+#ifndef FUCHSIA_ENGINE_BROWSER_MESSAGE_PORT_H_
+#define FUCHSIA_ENGINE_BROWSER_MESSAGE_PORT_H_
 
 #include <fuchsia/web/cpp/fidl.h>
 #include <lib/fidl/cpp/interface_handle.h>
@@ -46,4 +46,4 @@ base::Optional<fuchsia::web::WebMessage> FidlWebMessageFromBlink(
 
 }  // namespace cr_fuchsia
 
-#endif  // FUCHSIA_BASE_MESSAGE_PORT_H_
+#endif  // FUCHSIA_ENGINE_BROWSER_MESSAGE_PORT_H_