Rework ExtensionApiUnittest to run in extensions_unittests, removing its Chrome dependencies.

extensions/browser/api/sockets_tcp/sockets_tcp_api_unittest.cc

Index: extensions/browser/api/sockets_tcp/sockets_tcp_api_unittest.cc
diff --git a/chrome/browser/extensions/api/sockets_tcp/sockets_tcp_api_unittest.cc b/extensions/browser/api/sockets_tcp/sockets_tcp_api_unittest.cc
similarity index 83%
rename from chrome/browser/extensions/api/sockets_tcp/sockets_tcp_api_unittest.cc
rename to extensions/browser/api/sockets_tcp/sockets_tcp_api_unittest.cc
index e883e7c1233adb3f33588f95c7cd68d3fc2940b7..0ba3b3b6314c79d386037a125bece0c8b584a92c 100644
--- a/chrome/browser/extensions/api/sockets_tcp/sockets_tcp_api_unittest.cc
+++ b/extensions/browser/api/sockets_tcp/sockets_tcp_api_unittest.cc
@@ -3,15 +3,12 @@
 // found in the LICENSE file.
 
 #include "base/values.h"
-#include "chrome/browser/browser_process_impl.h"
-#include "chrome/browser/extensions/extension_api_unittest.h"
-#include "chrome/browser/extensions/test_extension_system.h"
-#include "chrome/browser/profiles/profile_manager.h"
-#include "chrome/test/base/testing_browser_process.h"
+#include "content/public/test/test_browser_context.h"
 #include "extensions/browser/api/api_resource_manager.h"
 #include "extensions/browser/api/socket/socket.h"
 #include "extensions/browser/api/socket/tcp_socket.h"
 #include "extensions/browser/api/sockets_tcp/sockets_tcp_api.h"
+#include "extensions/browser/extension_api_unittest.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -32,7 +29,7 @@ class SocketsTcpUnitTest : public ExtensionApiUnittest {
     ExtensionApiUnittest::SetUp();
 
     ApiResourceManager<ResumableTCPSocket>::GetFactoryInstance()
-        ->SetTestingFactoryAndUse(browser()->profile(),
+        ->SetTestingFactoryAndUse(browser_context(),
                                   ApiResourceManagerTestFactory);
   }
 };