Update BUILD deps for SecurityInterstitialsPageController

It needs to link against Blink to use blink::MainThreadIsolate()

Bug: none
Change-Id: Ib99bebbcb421d566a55dc491603c61c3299639d1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1890005
Commit-Queue: Evan Stade <estade@chromium.org>
Commit-Queue: Carlos IL <carlosil@chromium.org>
Reviewed-by: Carlos IL <carlosil@chromium.org>
Auto-Submit: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710847}

components/security_interstitials/content/renderer/BUILD.gn

@@ -8,6 +8,6 @@ static_library("security_interstitial_page_controller") {
     "//components/security_interstitials/core:",
     "//content/public/renderer",
     "//gin",
-    "//third_party/blink/public:blink_headers",
+    "//third_party/blink/public:blink",
   ]
 }