[Autofill] Migrate ChromePasswordManagerClient<-->PasswordGenerationAgent IPCs to mojo.

content/common/associated_interface_provider_impl.cc

 // 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 "content/common/associated_interface_provider_impl.h"
+#include "mojo/public/cpp/bindings/associated_binding.h"
+#include "mojo/public/cpp/bindings/binding.h"
 
 namespace content {
 
+class AssociatedInterfaceProviderImpl::LocalProvider
+    : public mojom::RouteProvider,
+      mojom::AssociatedInterfaceProvider {
+ public:
+  explicit LocalProvider(mojom::AssociatedInterfaceProviderAssociatedPtr* proxy)
+      : route_provider_binding_(this),
+        associated_interface_provider_binding_(this) {
+    route_provider_binding_.Bind(mojo::GetProxy(&route_provider_ptr_));
+    route_provider_ptr_->GetRoute(
+        0, mojo::GetProxy(proxy, route_provider_ptr_.associated_group()));
+  }
+
+  ~LocalProvider() override {}
+
+  void SetBinderForName(
+      const std::string& name,
+      const base::Callback<void(mojo::ScopedInterfaceEndpointHandle)>& binder) {
+    binders_[name] = binder;
+  }
+
+ private:
+  // mojom::RouteProvider:
+  void GetRoute(
+      int32_t routing_id,
+      mojom::AssociatedInterfaceProviderAssociatedRequest request) override {
+    DCHECK(request.is_pending());
+    associated_interface_provider_binding_.Bind(std::move(request));
+  }
+
+  // mojom::AssociatedInterfaceProvider:
+  void GetAssociatedInterface(
+      const std::string& name,
+      mojom::AssociatedInterfaceAssociatedRequest request) override {
+    auto it = binders_.find(name);
+    if (it != binders_.end())
+      it->second.Run(request.PassHandle());
+  }
+
+  using BinderMap =
+      std::map<std::string,
+               base::Callback<void(mojo::ScopedInterfaceEndpointHandle)>>;
+  BinderMap binders_;
+
+  mojom::RouteProviderPtr route_provider_ptr_;
+  mojo::Binding<mojom::RouteProvider> route_provider_binding_;
+
+  mojo::AssociatedBinding<mojom::AssociatedInterfaceProvider>
+      associated_interface_provider_binding_;
+};
+
 AssociatedInterfaceProviderImpl::AssociatedInterfaceProviderImpl(
     mojom::AssociatedInterfaceProviderAssociatedPtr proxy)
     : proxy_(std::move(proxy)) {
+  DCHECK(proxy_.is_bound());
 }
 
+AssociatedInterfaceProviderImpl::AssociatedInterfaceProviderImpl()
+    : local_provider_(new LocalProvider(&proxy_)) {}
+
 AssociatedInterfaceProviderImpl::~AssociatedInterfaceProviderImpl() {}
 
 void AssociatedInterfaceProviderImpl::GetInterface(
     const std::string& name,
     mojo::ScopedInterfaceEndpointHandle handle) {
   mojom::AssociatedInterfaceAssociatedRequest request;
   request.Bind(std::move(handle));
   return proxy_->GetAssociatedInterface(name, std::move(request));
 }
 
 mojo::AssociatedGroup* AssociatedInterfaceProviderImpl::GetAssociatedGroup() {
   return proxy_.associated_group();
 }
 
+void AssociatedInterfaceProviderImpl::OverrideBinderForTesting(
+    const std::string& name,
+    const base::Callback<void(mojo::ScopedInterfaceEndpointHandle)>& binder) {
+  DCHECK(local_provider_);
+  local_provider_->SetBinderForName(name, binder);
+}
+
 }  // namespace content