Update GN files from previous commit as well.

TBR=tsepez@chromium.org
BUG=455399

Review URL: https://codereview.chromium.org/902753002

BUILD.gn

diff --git a/BUILD.gn b/BUILD.gn
index 12842d3..b657836 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -749,9 +749,6 @@
   public_deps = [
     "//v8",
   ]
-  deps = [
-    "//v8:v8_libplatform",
-  ]
 }
 
 static_library("jsapi") {

samples/BUILD.gn

diff --git a/samples/BUILD.gn b/samples/BUILD.gn
index e690c23..37e13da 100644
--- a/samples/BUILD.gn
+++ b/samples/BUILD.gn
@@ -14,5 +14,10 @@
   ]
   deps = [
     "//third_party/pdfium",
+    "//v8:v8_libplatform",
+  ]
+  include_dirs = [
+    "//v8",
+    "//v8/include",
   ]
 }