Move BroadcastChannel browser code from components/ to content/browser.

components/webmessaging/broadcast_channel_provider.cc

Index: components/webmessaging/broadcast_channel_provider.cc
diff --git a/components/webmessaging/broadcast_channel_provider.cc b/components/webmessaging/broadcast_channel_provider.cc
deleted file mode 100644
index 78d3dc6cc5a6c740e74203448f71d4c587f4c420..0000000000000000000000000000000000000000
--- a/components/webmessaging/broadcast_channel_provider.cc
+++ /dev/null
@@ -1,115 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "components/webmessaging/broadcast_channel_provider.h"
-
-#include "base/bind.h"
-#include "base/stl_util.h"
-#include "mojo/public/cpp/bindings/associated_binding.h"
-#include "mojo/public/cpp/bindings/interface_ptr_set.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
-
-namespace webmessaging {
-
-// There is a one-to-one mapping of BroadcastChannel instances in the renderer
-// and Connection instances in the browser. The Connection is owned by a
-// BroadcastChannelProvider.
-class BroadcastChannelProvider::Connection
-    : public mojom::BroadcastChannelClient {
- public:
-  Connection(const url::Origin& origin,
-             const mojo::String& name,
-             mojom::BroadcastChannelClientAssociatedPtrInfo client,
-             mojom::BroadcastChannelClientAssociatedRequest connection,
-             webmessaging::BroadcastChannelProvider* service);
-
-  void OnMessage(const mojo::String& message) override;
-  void MessageToClient(const mojo::String& message) const {
-    client_->OnMessage(message);
-  }
-  const url::Origin& origin() const { return origin_; }
-  const std::string& name() const { return name_; }
-
-  void set_connection_error_handler(const base::Closure& error_handler) {
-    binding_.set_connection_error_handler(error_handler);
-    client_.set_connection_error_handler(error_handler);
-  }
-
- private:
-  mojo::AssociatedBinding<mojom::BroadcastChannelClient> binding_;
-  mojom::BroadcastChannelClientAssociatedPtr client_;
-
-  webmessaging::BroadcastChannelProvider* service_;
-  url::Origin origin_;
-  std::string name_;
-};
-
-BroadcastChannelProvider::Connection::Connection(
-    const url::Origin& origin,
-    const mojo::String& name,
-    mojom::BroadcastChannelClientAssociatedPtrInfo client,
-    mojom::BroadcastChannelClientAssociatedRequest connection,
-    webmessaging::BroadcastChannelProvider* service)
-    : binding_(this, std::move(connection)),
-      service_(service),
-      origin_(origin),
-      name_(name) {
-  client_.Bind(std::move(client));
-}
-
-void BroadcastChannelProvider::Connection::OnMessage(
-    const mojo::String& message) {
-  service_->ReceivedMessageOnConnection(this, message);
-}
-
-BroadcastChannelProvider::BroadcastChannelProvider() {}
-
-void BroadcastChannelProvider::Connect(
-    mojo::InterfaceRequest<mojom::BroadcastChannelProvider> request) {
-  bindings_.AddBinding(this, std::move(request));
-}
-
-void BroadcastChannelProvider::ConnectToChannel(
-    const url::Origin& origin,
-    const mojo::String& name,
-    mojom::BroadcastChannelClientAssociatedPtrInfo client,
-    mojom::BroadcastChannelClientAssociatedRequest connection) {
-  std::unique_ptr<Connection> c(new Connection(origin, name, std::move(client),
-                                               std::move(connection), this));
-  c->set_connection_error_handler(
-      base::Bind(&BroadcastChannelProvider::UnregisterConnection,
-                 base::Unretained(this), c.get()));
-  connections_[origin].insert(std::make_pair(name, std::move(c)));
-}
-
-BroadcastChannelProvider::~BroadcastChannelProvider() {}
-
-void BroadcastChannelProvider::UnregisterConnection(Connection* c) {
-  url::Origin origin = c->origin();
-  auto& connections = connections_[origin];
-  for (auto it = connections.lower_bound(c->name()),
-            end = connections.upper_bound(c->name());
-       it != end; ++it) {
-    if (it->second.get() == c) {
-      connections.erase(it);
-      break;
-    }
-  }
-  if (connections.empty())
-    connections_.erase(origin);
-}
-
-void BroadcastChannelProvider::ReceivedMessageOnConnection(
-    Connection* c,
-    const mojo::String& message) {
-  auto& connections = connections_[c->origin()];
-  for (auto it = connections.lower_bound(c->name()),
-            end = connections.upper_bound(c->name());
-       it != end; ++it) {
-    if (it->second.get() != c)
-      it->second->MessageToClient(message);
-  }
-}
-
-}  // namespace webmessaging