Make the SpawnerCommunicator destructor virtual since it inherits from net::URLRequest::Delegate

Also make BaseTestServer's dtor virtual protected to prevent the BaseTestServer pointer being directly deleted.

BUG=None
TEST=net_unittests should pass.
Review URL: https://chromiumcodereview.appspot.com/9704008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@126865 0039d316-1c4b-4281-b951-d872f2087c98

net/test/base_test_server.h

@@ -119,8 +119,6 @@ class BaseTestServer {
   // Initialize a HTTPS TestServer with a specific set of HTTPSOptions.
   explicit BaseTestServer(const HTTPSOptions& https_options);
 
-  ~BaseTestServer();
-
   // Returns the host port pair used by current Python based test server only
   // if the server is started.
   const HostPortPair& host_port_pair() const;
@@ -145,6 +143,7 @@ class BaseTestServer {
       std::string* replacement_path);
 
  protected:
+  virtual ~BaseTestServer();
   Type type() const { return type_; }
 
   // Gets port currently assigned to host_port_pair_ without checking

net/test/local_test_server.h

@@ -35,7 +35,7 @@ class LocalTestServer : public BaseTestServer {
   LocalTestServer(const HTTPSOptions& https_options,
                   const FilePath& document_root);
 
-  ~LocalTestServer();
+  virtual ~LocalTestServer();
 
   bool Start() WARN_UNUSED_RESULT;
 

net/test/remote_test_server.h

@@ -29,7 +29,7 @@ class RemoteTestServer : public BaseTestServer {
   RemoteTestServer(const HTTPSOptions& https_options,
                    const FilePath& document_root);
 
-  ~RemoteTestServer();
+  virtual ~RemoteTestServer();
 
   // Starts the Python test server on the host, instead of on the device.
   bool Start() WARN_UNUSED_RESULT;

net/test/spawner_communicator.h

@@ -62,7 +62,7 @@ class ScopedPortException;
 class SpawnerCommunicator : public net::URLRequest::Delegate {
  public:
   explicit SpawnerCommunicator(uint16 port);
-  ~SpawnerCommunicator();
+  virtual ~SpawnerCommunicator();
 
   // Starts an instance of the Python test server on the host/ machine.
   // If successfully started, returns true, setting |*port| to the port