[Cronet] Public key pinning for Java API

components/cronet/android/cronet_url_request_context_adapter.cc

Index: components/cronet/android/cronet_url_request_context_adapter.cc
diff --git a/components/cronet/android/cronet_url_request_context_adapter.cc b/components/cronet/android/cronet_url_request_context_adapter.cc
index 37a18cefb5069d6d39141a0d0273914781c85816..7f3b4c8f4c120ef460fa2d9dfc6e89309a8b5245 100644
--- a/components/cronet/android/cronet_url_request_context_adapter.cc
+++ b/components/cronet/android/cronet_url_request_context_adapter.cc
@@ -372,6 +372,30 @@ void CronetURLRequestContextAdapter::InitializeOnNetworkThread(
     }
   }
 
+  // Iterate through HPKP configuration for every host.
+  for (auto hpkp_itr = config->hpkp_list.begin();
+       hpkp_itr != config->hpkp_list.end(); ++hpkp_itr) {
+    const URLRequestContextConfig::Hpkp& hpkp = **hpkp_itr;
+
+    // Convert the vector of hash strings from the config to
+    // a vector of HashValue objects.
+    net::HashValueVector hash_value_vector;
+    for (const auto& hash : hpkp.pin_hashes) {
+      auto hash_value = net::HashValue(net::HASH_VALUE_SHA256);
+      bool good_hash = hash_value.FromString(*hash);
+      if (good_hash) {
+        hash_value_vector.push_back(hash_value);
+      } else {
+        LOG(WARNING) << "Unable to add hash value " << *hash;
+      }
+    }
+
+    // Add the host pinning.
+    context_->transport_security_state()->AddHPKP(hpkp.host, base::Time::Max(),
+                                                  hpkp.include_subdomains,
+                                                  hash_value_vector, GURL());
+  }
+
   JNIEnv* env = base::android::AttachCurrentThread();
   jcronet_url_request_context_.Reset(env, jcronet_url_request_context.obj());
   Java_CronetUrlRequestContext_initNetworkThread(