WIP POC blob transport over mojo

third_party/WebKit/public/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/buildflag_header.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//third_party/WebKit/public/public_features.gni")
 import("//third_party/WebKit/Source/config.gni")
 import("//third_party/WebKit/Source/core/core.gni")
 import("//tools/grit/grit_rule.gni")
@@ skipping 713 matching lines @@
     "platform/modules/serviceworker/service_worker_event_status.mojom",
     "platform/modules/serviceworker/service_worker_stream_handle.mojom",
     "platform/modules/websockets/websocket.mojom",
     "platform/referrer.mojom",
     "platform/site_engagement.mojom",
     "web/console_message.mojom",
     "web/window_features.mojom",
   ]
   public_deps = [
     ":android_mojo_bindings",
+    ":blob_mojo_bindings",
     "//device/bluetooth/public/interfaces",
     "//mojo/common:common_custom_types",
     "//ui/gfx/geometry/mojo",
     "//url/mojo:url_mojom_gurl",
     "//url/mojo:url_mojom_origin",
   ]
 
   component_output_prefix = "blink_mojo_bindings"
 
   # The chromium variant must be linked with content and use the same export
@@ skipping 59 matching lines @@
 
   # See comment above
   export_class_attribute = "CONTENT_EXPORT"
   export_define = "CONTENT_IMPLEMENTATION=1"
   export_header = "content/common/content_export.h"
   export_class_attribute_blink = "BLINK_PLATFORM_EXPORT"
   export_define_blink = "BLINK_PLATFORM_IMPLEMENTATION=1"
   export_header_blink = "third_party/WebKit/public/platform/WebCommon.h"
 }
 
+# The blob_mojo_bindings is separated from the rest of mojom files
+# because its deps contain too many files in Chromium that would pollute the
+# include paths in generated mojom-blink files for other services.
+mojom("blob_mojo_bindings") {
+  visibility = [
+    "//content/*",
+    "//storage/*",
+    ":mojo_bindings",
+  ]
+  visibility_blink = [
+    "//third_party/WebKit/Source/platform",
+    "//content/common:mojo_bindings_blink",
+    ":mojo_bindings_blink",
+  ]
+  sources = [
+    "platform/blobs.mojom",
+  ]
+  deps = [
+    "//mojo/common:common_custom_types",
+    "//url/mojo:url_mojom_gurl",
+  ]
+
+  component_output_prefix = "blink_blob_mojo_bindings"
+
+  # See comment above
+  export_class_attribute = "CONTENT_EXPORT"
+  export_define = "CONTENT_IMPLEMENTATION=1"
+  export_header = "content/common/content_export.h"
+  export_class_attribute_blink = "BLINK_PLATFORM_EXPORT"
+  export_define_blink = "BLINK_PLATFORM_IMPLEMENTATION=1"
+  export_header_blink = "third_party/WebKit/public/platform/WebCommon.h"
+}
+
 group("generate_mojo_bindings") {
   deps = [
+    ":blob_mojo_bindings_blink__generator",
     ":mojo_bindings_blink__generator",
     ":offscreen_canvas_mojo_bindings_blink__generator",
   ]
 }
 
 # Some mojom typemaps are shared between Chromium and Blink variants and
 # therefore require some shared traits implementation. These definitions are
 # relegated to a separate target to avoid duplication between the variants.
 source_set("shared_typemap_traits") {
   visibility = [ ":*" ]
   sources = [
     "web/ConsoleMessageStructTraits.cpp",
     "web/ConsoleMessageStructTraits.h",
   ]
   deps = [
     ":blink_headers",
     ":mojo_bindings_shared__generator",
     "//mojo/public/cpp/bindings:struct_traits",
   ]
 }