Enable "gn check" for //third_party/blink/renderer/platform/heap

* It has circular dependencies with platform:platform,
  platform/instrumentation:instrumentation, and
  platform/scheduler:scheduler. This CL updates
  |allow_circular_includes_from|s for them.

* Change visibility of platform:platform_export to be used by
  platform/heap:heap_unsanitized.

This CL has no behavior changes.

Bug: 800764
Change-Id: Iba08daca769d5c41f20fd678ef2d3cbc3c72e3ad
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2400782
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Auto-Submit: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#805619}

.gn

@@ -257,7 +257,6 @@ no_check_targets = [
   "//third_party/blink/renderer/modules/peerconnection:*",  # 43 errors
   "//third_party/blink/renderer/modules/webtransport:*",  # 16 errors
   "//third_party/blink/renderer/modules:*",  # 321 errors
-  "//third_party/blink/renderer/platform/heap:*",  # 65 errors
   "//third_party/blink/renderer/platform/loader:*",  # 180 errors
   "//third_party/blink/renderer/platform/network:*",  # 15 errors
   "//third_party/blink/renderer/platform:*",  # 72 errors

third_party/blink/renderer/platform/BUILD.gn

@@ -238,8 +238,8 @@ source_set("platform_export") {
 
   visibility = []  # Allow re-assignment of list.
   visibility = [
-    ":platform",
     "//mojo/public/cpp/bindings:wtf_support",
+    "//third_party/blink/renderer/platform/*",
   ]
 }
 
@@ -250,8 +250,8 @@ component("platform") {
     "//services/device/public/mojom:mojom_blink",
     "//services/media_session/public/mojom:mojom_blink",
     "//third_party/blink/*",
-    "//url/mojom:url_mojom_origin_blink",
     "//url/mojom:url_mojom_gurl_blink",
+    "//url/mojom:url_mojom_origin_blink",
   ]
   output_name = "blink_platform"
 
@@ -1561,6 +1561,7 @@ component("platform") {
 
   allow_circular_includes_from = [
     "//third_party/blink/renderer/platform/blob",
+    "//third_party/blink/renderer/platform/heap:heap",
     "//third_party/blink/renderer/platform/instrumentation",
     "//third_party/blink/renderer/platform/scheduler",
   ]

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

@@ -39,6 +39,7 @@ source_set("heap_unsanitized") {
     "//base",
     "//third_party/blink/renderer/platform/wtf",
   ]
+  public_deps = [ "//third_party/blink/renderer/platform:platform_export" ]
 }
 
 blink_platform_sources("heap") {
@@ -138,7 +139,9 @@ source_set("test_support") {
     "//testing/gtest",
     "//third_party/blink/public/mojom:mojom_platform_blink_headers",
     "//third_party/blink/renderer/platform:bindings_buildflags",
+    "//third_party/blink/renderer/platform:platform",
   ]
+  public_deps = [ "//base/test:test_support" ]
 }
 
 test("blink_heap_unittests") {
@@ -190,8 +193,11 @@ source_set("blink_heap_unittests_sources") {
   ]
 
   deps = [
+    ":test_support",
     "//base",
     "//base/test:test_support",
+    "//mojo/core/embedder:embedder",
+    "//skia:test_fonts",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/blink/renderer/platform:test_support",

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

@@ -47,6 +47,7 @@ blink_platform_sources("instrumentation") {
     "//services/service_manager/public/cpp",
   ]
   public_deps = [ "//third_party/blink/renderer/platform/heap:heap" ]
+  allow_circular_includes_from = public_deps
 }
 
 source_set("unit_tests") {

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

@@ -183,8 +183,10 @@ blink_platform_sources("scheduler") {
     "//v8",
   ]
 
-  allow_circular_includes_from =
-      [ "//third_party/blink/renderer/platform/instrumentation" ]
+  allow_circular_includes_from = [
+    "//third_party/blink/renderer/platform/heap:heap",
+    "//third_party/blink/renderer/platform/instrumentation",
+  ]
 }
 
 source_set("test_support") {