Use client_secret and client_id from prefs in grpc client.

PiperOrigin-RevId: 671450009

internal/platform/implementation/account_manager.h

@@ -17,6 +17,7 @@
 
 #include <optional>
 #include <string>
+#include <utility>
 
 #include "absl/functional/any_invocable.h"
 #include "absl/status/status.h"
@@ -89,6 +90,11 @@ class AccountManager {
       absl::AnyInvocable<void(absl::string_view)> success_callback,
       absl::AnyInvocable<void(absl::Status)> failure_callback) = 0;
 
+  // Returns a pair containing the client id and client secret used in the most
+  // recent Login request.
+  // If no current user is logged in, returns empty string for both.
+  virtual std::pair<std::string, std::string> GetOAuthClientCredential() = 0;
+
   virtual void AddObserver(Observer* observer) = 0;
   virtual void RemoveObserver(Observer* observer) = 0;
 };

internal/test/fake_account_manager.cc

@@ -16,6 +16,7 @@
 
 #include <optional>
 #include <string>
+#include <utility>
 
 #include "absl/functional/any_invocable.h"
 #include "absl/status/status.h"
@@ -89,6 +90,11 @@ bool FakeAccountManager::GetAccessToken(
   return true;
 }
 
+std::pair<std::string, std::string>
+FakeAccountManager::GetOAuthClientCredential() {
+  return {"", ""};
+}
+
 void FakeAccountManager::SetAccount(std::optional<Account> account) {
   account_ = account;
   if (account_.has_value()) {

internal/test/fake_account_manager.h

@@ -17,6 +17,7 @@
 
 #include <optional>
 #include <string>
+#include <utility>
 
 #include "absl/functional/any_invocable.h"
 #include "absl/status/status.h"
@@ -50,6 +51,7 @@ class FakeAccountManager : public AccountManager {
       absl::string_view account_id,
       absl::AnyInvocable<void(absl::string_view)> success_callback,
       absl::AnyInvocable<void(absl::Status)> failure_callback) override;
+  std::pair<std::string, std::string> GetOAuthClientCredential() override;
   void AddObserver(Observer* observer) override;
   void RemoveObserver(Observer* observer) override;
 

internal/test/mock_account_manager.h

@@ -16,6 +16,8 @@
 #define THIRD_PARTY_NEARBY_INTERNAL_TEST_MOCK_ACCOUNT_MANAGER_H_
 
 #include <optional>
+#include <string>
+#include <utility>
 
 #include "gmock/gmock.h"
 #include "absl/functional/any_invocable.h"
@@ -45,6 +47,8 @@ class MockAccountManager : public AccountManager {
                absl::AnyInvocable<void(absl::string_view)> success_callback,
                absl::AnyInvocable<void(absl::Status)> failure_callback),
               (override));
+  MOCK_METHOD((std::pair<std::string, std::string>), GetOAuthClientCredential,
+              (), (override));
   MOCK_METHOD(void, AddObserver, (Observer * observer), (override));
   MOCK_METHOD(void, RemoveObserver, (Observer * observer), (override));
 };