Add internet connectivity check to network monitor.

PiperOrigin-RevId: 739495202

sharing/internal/api/mock_network_monitor.h

@@ -29,6 +29,7 @@ class MockNetworkMonitor : public nearby::api::NetworkMonitor {
   ~MockNetworkMonitor() override = default;
 
   MOCK_METHOD(bool, IsLanConnected, (), (override));
+  MOCK_METHOD(bool, IsInternetConnected, (), (override));
 
   MOCK_METHOD(ConnectionType, GetCurrentConnection, (), (override));
 };

sharing/internal/api/mock_sharing_platform.h

@@ -56,11 +56,12 @@ class MockSharingPlatform : public SharingPlatform {
 
   MOCK_METHOD(void, UpdateLoggingLevel, (), (override));
 
-  MOCK_METHOD(
-      std::unique_ptr<nearby::api::NetworkMonitor>, CreateNetworkMonitor,
-      (std::function<void(nearby::api::NetworkMonitor::ConnectionType, bool)>
-           callback),
-      (override));
+  MOCK_METHOD(std::unique_ptr<nearby::api::NetworkMonitor>,
+              CreateNetworkMonitor,
+              (std::function<void(nearby::api::NetworkMonitor::ConnectionType,
+                                  bool, bool)>
+                   callback),
+              (override));
 
   MOCK_METHOD(nearby::sharing::api::BluetoothAdapter&, GetBluetoothAdapter, (),
               (override));

sharing/internal/api/network_monitor.h

@@ -38,21 +38,28 @@ class NetworkMonitor {
     kLast = k5G
   };
 
-  explicit NetworkMonitor(std::function<void(ConnectionType, bool)> callback) {
+  // Registers a callback for connection changes. The callback will be called
+  // with the current connection type, whether the device is connected to a
+  // LAN network and whether the device is connected to internet.
+  explicit NetworkMonitor(
+      std::function<void(ConnectionType, bool, bool)> callback) {
     callback_ = std::move(callback);
   }
 
   virtual ~NetworkMonitor() = default;
 
   // Returns true if connected to an AP (Access Point), not necessarily
-  // connected to the internet
+  // connected to the internet.
   virtual bool IsLanConnected() = 0;
 
+  // Returns true if connected to internet.
+  virtual bool IsInternetConnected() = 0;
+
   // Returns the type of connection used currently to access the internet
   virtual ConnectionType GetCurrentConnection() = 0;
 
  protected:
-  std::function<void(ConnectionType, bool)> callback_;
+  std::function<void(ConnectionType, bool, bool)> callback_;
 };
 
 }  // namespace api

sharing/internal/api/sharing_platform.h

@@ -57,7 +57,8 @@ class SharingPlatform {
   virtual void UpdateLoggingLevel() = 0;
 
   virtual std::unique_ptr<nearby::api::NetworkMonitor> CreateNetworkMonitor(
-      std::function<void(nearby::api::NetworkMonitor::ConnectionType, bool)>
+      std::function<void(nearby::api::NetworkMonitor::ConnectionType, bool,
+                         bool)>
           callback) = 0;
 
   virtual BluetoothAdapter& GetBluetoothAdapter() = 0;