Revert of Switch components/password_manager code from IPC messages to Mojo.

components/password_manager/content/renderer/credential_manager_client_browsertest.cc

Index: components/password_manager/content/renderer/credential_manager_client_browsertest.cc
diff --git a/components/password_manager/content/renderer/credential_manager_client_browsertest.cc b/components/password_manager/content/renderer/credential_manager_client_browsertest.cc
index c1cee2d714be2fc947949369ed7186435235a766..cb28b974bbfe3aca9f5c21ff84a5becd7e357191 100644
--- a/components/password_manager/content/renderer/credential_manager_client_browsertest.cc
+++ b/components/password_manager/content/renderer/credential_manager_client_browsertest.cc
@@ -6,12 +6,10 @@
 
 #include <tuple>
 
+#include "components/password_manager/content/common/credential_manager_messages.h"
 #include "components/password_manager/content/renderer/credential_manager_client.h"
-#include "content/public/common/service_registry.h"
-#include "content/public/renderer/render_frame.h"
-#include "content/public/renderer/render_view.h"
 #include "content/public/test/render_view_test.h"
-#include "mojo/public/cpp/bindings/binding_set.h"
+#include "ipc/ipc_test_sink.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebCredential.h"
 #include "third_party/WebKit/public/platform/WebCredentialManagerClient.h"
@@ -19,58 +17,9 @@
 #include "third_party/WebKit/public/platform/WebPassOwnPtr.h"
 #include "third_party/WebKit/public/platform/WebPasswordCredential.h"
 
-using content::ServiceRegistry;
-
 namespace password_manager {
 
 namespace {
-
-const char kTestCredentialPassword[] = "https://password.com/";
-const char kTestCredentialEmpty[] = "https://empty.com/";
-const char kTestCredentialReject[] = "https://reject.com/";
-
-class FakeCredentialManager : public mojom::CredentialManager {
- public:
-  FakeCredentialManager() {}
-  ~FakeCredentialManager() override {}
-
-  void BindRequest(mojom::CredentialManagerRequest request) {
-    bindings_.AddBinding(this, std::move(request));
-  }
-
- private:
-  // mojom::CredentialManager methods:
-  void Store(mojom::CredentialInfoPtr credential,
-             const StoreCallback& callback) override {
-    callback.Run();
-  }
-
-  void RequireUserMediation(
-      const RequireUserMediationCallback& callback) override {
-    callback.Run();
-  }
-
-  void Get(bool zero_click_only,
-           bool include_passwords,
-           mojo::Array<mojo::String> federations,
-           const GetCallback& callback) override {
-    mojo::String& url = federations[0];
-
-    if (url == kTestCredentialPassword) {
-      mojom::CredentialInfoPtr info = mojom::CredentialInfo::New();
-      info->type = mojom::CredentialType::PASSWORD;
-      callback.Run(mojom::CredentialManagerError::SUCCESS, std::move(info));
-    } else if (url == kTestCredentialEmpty) {
-      callback.Run(mojom::CredentialManagerError::SUCCESS,
-                   mojom::CredentialInfo::New());
-    } else if (url == kTestCredentialReject) {
-      callback.Run(mojom::CredentialManagerError::PASSWORDSTOREUNAVAILABLE,
-                   nullptr);
-    }
-  }
-
-  mojo::BindingSet<mojom::CredentialManager> bindings_;
-};
 
 class CredentialManagerClientTest : public content::RenderViewTest {
  public:
@@ -80,14 +29,8 @@
 
   void SetUp() override {
     content::RenderViewTest::SetUp();
+    credential_.reset(new blink::WebPasswordCredential("", "", "", GURL()));
     client_.reset(new CredentialManagerClient(view_));
-
-    ServiceRegistry* registry =
-        view_->GetMainRenderFrame()->GetServiceRegistry();
-    registry->AddServiceOverrideForTesting(
-        mojom::CredentialManager::Name_,
-        base::Bind(&CredentialManagerClientTest::BindCredentialManager,
-                   base::Unretained(this)));
   }
 
   void TearDown() override {
@@ -96,23 +39,59 @@
     content::RenderViewTest::TearDown();
   }
 
+  IPC::TestSink& sink() { return render_thread_->sink(); }
+
+  blink::WebCredential* credential() { return credential_.get(); }
+
+  // The browser's response to any of the messages the client sends must contain
+  // a request ID so that the client knows which request is being serviced. This
+  // method grabs the ID from an outgoing |message_id| message, and sets the
+  // |request_id| param to its value. If no request ID can be found, the method
+  // returns false, and the |request_id| is set to -1.
+  //
+  // Clears any pending messages upon return.
+  bool ExtractRequestId(uint32_t message_id, int& request_id) {
+    request_id = -1;
+    const IPC::Message* message = sink().GetFirstMessageMatching(message_id);
+    if (!message)
+      return false;
+
+    switch (message_id) {
+      case CredentialManagerHostMsg_Store::ID: {
+        std::tuple<int, CredentialInfo> param;
+        CredentialManagerHostMsg_Store::Read(message, &param);
+        request_id = std::get<0>(param);
+        break;
+      }
+
+      case CredentialManagerHostMsg_RequireUserMediation::ID: {
+        std::tuple<int> param;
+        CredentialManagerHostMsg_RequireUserMediation::Read(message, &param);
+        request_id = std::get<0>(param);
+        break;
+      }
+
+      case CredentialManagerHostMsg_RequestCredential::ID: {
+        std::tuple<int, bool, bool, std::vector<GURL>> param;
+        CredentialManagerHostMsg_RequestCredential::Read(message, &param);
+        request_id = std::get<0>(param);
+        break;
+      }
+
+      default:
+        break;
+    }
+    sink().ClearMessages();
+    return request_id != -1;
+  }
+
   bool callback_errored() const { return callback_errored_; }
   void set_callback_errored(bool state) { callback_errored_ = state; }
   bool callback_succeeded() const { return callback_succeeded_; }
   void set_callback_succeeded(bool state) { callback_succeeded_ = state; }
 
-  void BindCredentialManager(mojo::ScopedMessagePipeHandle handle) {
-    fake_cm_.BindRequest(
-        mojo::MakeRequest<mojom::CredentialManager>(std::move(handle)));
-  }
-
-  std::unique_ptr<blink::WebPasswordCredential> credential_;
-  blink::WebCredentialManagerError error_;
-
  protected:
   std::unique_ptr<CredentialManagerClient> client_;
-
-  FakeCredentialManager fake_cm_;
 
   // True if a message's callback's 'onSuccess'/'onError' methods were called,
   // false otherwise. We put these on the test object rather than on the
@@ -121,6 +100,8 @@
   // pending Blink-side Promise.
   bool callback_errored_;
   bool callback_succeeded_;
+
+  std::unique_ptr<blink::WebPasswordCredential> credential_;
 };
 
 class TestNotificationCallbacks
@@ -149,101 +130,90 @@
 
   ~TestRequestCallbacks() override {}
 
-  void onSuccess(
-      blink::WebPassOwnPtr<blink::WebCredential> credential) override {
+  void onSuccess(blink::WebPassOwnPtr<blink::WebCredential>) override {
     test_->set_callback_succeeded(true);
-
-    blink::WebCredential* ptr =
-        std::unique_ptr<blink::WebCredential>(credential).release();
-    test_->credential_.reset(static_cast<blink::WebPasswordCredential*>(ptr));
   }
 
   void onError(blink::WebCredentialManagerError reason) override {
     test_->set_callback_errored(true);
-    test_->credential_.reset();
-    test_->error_ = reason;
   }
 
  private:
   CredentialManagerClientTest* test_;
 };
 
-void RunAllPendingTasks() {
-  base::RunLoop run_loop;
-  base::MessageLoop::current()->PostTask(
-      FROM_HERE, base::MessageLoop::QuitWhenIdleClosure());
-  run_loop.Run();
-}
-
 }  // namespace
 
 TEST_F(CredentialManagerClientTest, SendStore) {
-  credential_.reset(new blink::WebPasswordCredential("", "", "", GURL()));
+  int request_id;
+  EXPECT_FALSE(
+      ExtractRequestId(CredentialManagerHostMsg_Store::ID, request_id));
+
   std::unique_ptr<TestNotificationCallbacks> callbacks(
       new TestNotificationCallbacks(this));
-  client_->dispatchStore(*credential_, callbacks.release());
-
-  RunAllPendingTasks();
-
+  client_->dispatchStore(*credential(), callbacks.release());
+
+  EXPECT_TRUE(ExtractRequestId(CredentialManagerHostMsg_Store::ID, request_id));
+
+  client_->OnAcknowledgeStore(request_id);
   EXPECT_TRUE(callback_succeeded());
   EXPECT_FALSE(callback_errored());
 }
 
 TEST_F(CredentialManagerClientTest, SendRequestUserMediation) {
+  int request_id;
+  EXPECT_FALSE(ExtractRequestId(
+      CredentialManagerHostMsg_RequireUserMediation::ID, request_id));
+
   std::unique_ptr<TestNotificationCallbacks> callbacks(
       new TestNotificationCallbacks(this));
   client_->dispatchRequireUserMediation(callbacks.release());
 
-  RunAllPendingTasks();
-
+  EXPECT_TRUE(ExtractRequestId(
+      CredentialManagerHostMsg_RequireUserMediation::ID, request_id));
+
+  client_->OnAcknowledgeRequireUserMediation(request_id);
   EXPECT_TRUE(callback_succeeded());
   EXPECT_FALSE(callback_errored());
 }
 
 TEST_F(CredentialManagerClientTest, SendRequestCredential) {
+  int request_id;
+  EXPECT_FALSE(ExtractRequestId(CredentialManagerHostMsg_RequestCredential::ID,
+                                request_id));
+
   std::unique_ptr<TestRequestCallbacks> callbacks(
       new TestRequestCallbacks(this));
   std::vector<GURL> federations;
-  federations.push_back(GURL(kTestCredentialPassword));
   client_->dispatchGet(false, true, federations, callbacks.release());
 
-  RunAllPendingTasks();
-
-  EXPECT_TRUE(callback_succeeded());
-  EXPECT_FALSE(callback_errored());
-  EXPECT_TRUE(credential_);
-  EXPECT_EQ("password", credential_->type());
+  EXPECT_TRUE(ExtractRequestId(CredentialManagerHostMsg_RequestCredential::ID,
+                               request_id));
+
+  CredentialInfo info;
+  info.type = CredentialType::CREDENTIAL_TYPE_PASSWORD;
+  client_->OnSendCredential(request_id, info);
+  EXPECT_TRUE(callback_succeeded());
+  EXPECT_FALSE(callback_errored());
 }
 
 TEST_F(CredentialManagerClientTest, SendRequestCredentialEmpty) {
+  int request_id;
+  EXPECT_FALSE(ExtractRequestId(CredentialManagerHostMsg_RequestCredential::ID,
+                                request_id));
+
   std::unique_ptr<TestRequestCallbacks> callbacks(
       new TestRequestCallbacks(this));
   std::vector<GURL> federations;
-  federations.push_back(GURL(kTestCredentialEmpty));
   client_->dispatchGet(false, true, federations, callbacks.release());
 
-  RunAllPendingTasks();
-
-  EXPECT_TRUE(callback_succeeded());
-  EXPECT_FALSE(callback_errored());
-  EXPECT_FALSE(credential_);
-}
-
-TEST_F(CredentialManagerClientTest, SendRequestCredentialReject) {
-  std::unique_ptr<TestRequestCallbacks> callbacks(
-      new TestRequestCallbacks(this));
-  std::vector<GURL> federations;
-  federations.push_back(GURL(kTestCredentialReject));
-  client_->dispatchGet(false, true, federations, callbacks.release());
-
-  RunAllPendingTasks();
-
-  EXPECT_FALSE(callback_succeeded());
-  EXPECT_TRUE(callback_errored());
-  EXPECT_FALSE(credential_);
-  EXPECT_EQ(blink::WebCredentialManagerError::
-                WebCredentialManagerPasswordStoreUnavailableError,
-            error_);
+  EXPECT_TRUE(ExtractRequestId(CredentialManagerHostMsg_RequestCredential::ID,
+                               request_id));
+
+  CredentialInfo info;  // Send an empty credential in response.
+  client_->OnSendCredential(request_id, info);
+  EXPECT_TRUE(callback_succeeded());
+  EXPECT_FALSE(callback_errored());
 }
 
 }  // namespace password_manager