Convert PDF component IPC to mojo.

third_party/WebKit/Source/platform/BUILD.gn

 # Copyright 2014 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("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 import("//third_party/WebKit/public/public_features.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
@@ skipping 196 matching lines @@
     } else if (is_mac) {
       precompiled_source =
           "//third_party/WebKit/Source/platform/Precompile-platform.h"
     }
   }
 }
 
 component("platform") {
   visibility = []  # Allow re-assignment of list.
   visibility = [
+    "//components/pdf/common:interfaces_blink",
     "//third_party/WebKit/*",
     "//url/mojo:url_mojom_origin_blink",
     "//url/mojo:url_mojom_gurl_blink",
   ]
   output_name = "blink_platform"
 
   sources = [
     "AsyncFileSystemCallbacks.h",
     "AsyncMethodRunner.h",
     "CalculationValue.h",
@@ skipping 1929 matching lines @@
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     ":test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }