[client hints] Refactor the "should it be sent" renderer code

This is mostly to get clarity on what this should be doing before
I change how parsing of client hints and communication from browser
works, though it's not really dependent.

Change-Id: I04e8b403a6aeae544d2616688a39c65c0e60b5bf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2083449
Commit-Queue: Maksim Orlovich <morlovich@chromium.org>
Reviewed-by: Yoav Weiss <yoavweiss@chromium.org>
Cr-Commit-Position: refs/heads/master@{#751068}

third_party/blink/renderer/core/loader/frame_fetch_context.h

@@ -35,6 +35,7 @@ n * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 #include "base/single_thread_task_runner.h"
 #include "third_party/blink/public/common/user_agent/user_agent_metadata.h"
 #include "third_party/blink/public/mojom/service_worker/service_worker_object.mojom-blink-forward.h"
+#include "third_party/blink/public/mojom/web_client_hints/web_client_hints_types.mojom-blink-forward.h"
 #include "third_party/blink/renderer/core/core_export.h"
 #include "third_party/blink/renderer/core/loader/base_fetch_context.h"
 #include "third_party/blink/renderer/platform/heap/handle.h"
@@ -168,7 +169,14 @@ class CORE_EXPORT FrameFetchContext final : public BaseFetchContext {
   UserAgentMetadata GetUserAgentMetadata() const;
   const ClientHintsPreferences GetClientHintsPreferences() const;
   float GetDevicePixelRatio() const;
-  bool ShouldSendClientHint(mojom::WebClientHintsType,
+
+  enum class ClientHintsMode { kLegacy, kStandard };
+  bool ShouldSendClientHint(ClientHintsMode mode,
+                            const FeaturePolicy*,
+                            const url::Origin& resource_origin,
+                            bool is_1p_origin,
+                            mojom::blink::WebClientHintsType,
+                            mojom::blink::FeaturePolicyFeature,
                             const ClientHintsPreferences&,
                             const WebEnabledClientHints&) const;
   void SetFirstPartyCookie(ResourceRequest&);