[FeaturePolicy] Initial implementation of Feature Policy

third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp

Index: third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp b/third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp
index d0bb9de194cf24ec8ad2487adc5c89c2ed997404..dcc2d54cedc5ed3ac026bf101ef3468c1fa13e39 100644
--- a/third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp
@@ -30,10 +30,12 @@
 
 #include "bindings/core/v8/V8Binding.h"
 
+#include "bindings/core/v8/ConditionalFeatures.h"
 #include "bindings/core/v8/ScriptController.h"
 #include "bindings/core/v8/V8AbstractEventListener.h"
 #include "bindings/core/v8/V8ArrayBufferView.h"
 #include "bindings/core/v8/V8BindingMacros.h"
+#include "bindings/core/v8/V8Document.h"
 #include "bindings/core/v8/V8Element.h"
 #include "bindings/core/v8/V8EventTarget.h"
 #include "bindings/core/v8/V8HTMLLinkElement.h"
@@ -63,6 +65,7 @@
 #include "core/workers/WorkletGlobalScope.h"
 #include "core/xml/XPathNSResolver.h"
 #include "platform/TracedValue.h"
+#include "platform/feature_policy/FeaturePolicy.h"
 #include "wtf/MathExtras.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/Threading.h"
@@ -812,14 +815,47 @@ void installOriginTrialsCore(ScriptState* scriptState)
 
     ExecutionContext* executionContext = scriptState->getExecutionContext();
     OriginTrialContext* originTrialContext = OriginTrialContext::from(executionContext, OriginTrialContext::DontCreateIfNotExists);
-    if (!originTrialContext)
-        return;
 
-    if (!originTrialContext->featureBindingsInstalled("LinkServiceWorker") && (RuntimeEnabledFeatures::linkServiceWorkerEnabled() || originTrialContext->isFeatureEnabled("ForeignFetch"))) {
-        if (executionContext->isDocument()) {
-            V8HTMLLinkElement::installLinkServiceWorker(scriptState);
+    if (originTrialContext) {
+        if (!originTrialContext->featureBindingsInstalled("LinkServiceWorker") && (RuntimeEnabledFeatures::linkServiceWorkerEnabled() || originTrialContext->isFeatureEnabled("ForeignFetch"))) {
+            if (executionContext->isDocument()) {
+                V8HTMLLinkElement::installLinkServiceWorker(scriptState);
+            }
         }
     }
+
+    // Install feature-policy-controlled features, if necessary
+    LocalDOMWindow* domwindow = scriptState->domWindow();
+    if (!domwindow)
+        return;
+    LocalFrame* frame = domwindow->frame();
+    if (!frame)
+        return;
+    if (RuntimeEnabledFeatures::featurePolicyEnabled()) {
+        // Feature policy is active, so we need to check that it isn't too early
+        // to decide which features to install, and also abort if we've already
+        // installed them.
+        FeaturePolicy* policy = frame->getFeaturePolicy();
+        if (!policy)
+            return;
+        if (policy->featurePolicyBindingsInstalled())
+            return;
+    }
+
+    if (executionContext->isDocument()) {
+        ScriptState::Scope scope(scriptState);
+        v8::Local<v8::Context> context = scriptState->context();
+        v8::Local<v8::Object> global = context->Global();
+        v8::Isolate* isolate = scriptState->isolate();
+        v8::Local<v8::String> documentName = v8::String::NewFromOneByte(isolate, reinterpret_cast<const uint8_t*>("document"), v8::NewStringType::kNormal).ToLocalChecked();
+        v8::Local<v8::Object> document = global->Get(context, documentName).ToLocalChecked()->ToObject();
+        if (isFeatureEnabledInFrame(&blink::kDocumentCookie, frame))
+            V8Document::installDocumentCookie(scriptState, document);
+        if (isFeatureEnabledInFrame(&blink::kDocumentDomain, frame))
+            V8Document::installDocumentDomain(scriptState, document);
+        if (isFeatureEnabledInFrame(&blink::kDocumentWrite, frame))
+            V8Document::installDocumentWrite(scriptState, document);
+    }
 }
 
 namespace {
@@ -830,14 +866,13 @@ void installOriginTrials(ScriptState* scriptState)
 {
     v8::Local<v8::Context> context = scriptState->context();
     ExecutionContext* executionContext = toExecutionContext(context);
-    OriginTrialContext* originTrialContext = OriginTrialContext::from(executionContext, OriginTrialContext::DontCreateIfNotExists);
-    if (!originTrialContext)
-        return;
-
     ScriptState::Scope scope(scriptState);
 
     (*s_installOriginTrialsFunction)(scriptState);
 
+    OriginTrialContext* originTrialContext = OriginTrialContext::from(executionContext, OriginTrialContext::DontCreateIfNotExists);
+    if (!originTrialContext)
+        return;
     // Mark each enabled feature as having been installed.
     if (!originTrialContext->featureBindingsInstalled("DurableStorage") && (RuntimeEnabledFeatures::durableStorageEnabled() || originTrialContext->isFeatureEnabled("DurableStorage"))) {
         originTrialContext->setFeatureBindingsInstalled("DurableStorage");