Admixtures in BrowserTestBase

content/public/test/browser_test_base.h

Index: content/public/test/browser_test_base.h
diff --git a/content/public/test/browser_test_base.h b/content/public/test/browser_test_base.h
index 1514c65062ee50ec668b1c6f37e472e98e7c7f10..a350241a6ca020f1e8c2a458d766164ffb6244b2 100644
--- a/content/public/test/browser_test_base.h
+++ b/content/public/test/browser_test_base.h
@@ -7,6 +7,7 @@
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
+#include "base/memory/scoped_vector.h"
 #include "base/threading/thread.h"
 #include "net/test/spawned_test_server/spawned_test_server.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -28,6 +29,27 @@ namespace content {
 
 class BrowserTestBase : public testing::Test {
  public:
+  // Class that can be used to add some features not related directly
+  // to the testing process and do set ups needed for them in proper time.
+  // To do this you need to derive Admixture, implement
+  // all the methods you need there and (if needed) reload set ups and tear
+  // downs
+  // for things that you would usually do in those of the test, but which are
+  // connected
+  // to the admixture, not to the test itself.
+  // Finally, AddAdmixture() should be called in the test's constructor for each
+  // Admixture.
+  class Admixture {
+   public:
+    Admixture() {}
+    virtual ~Admixture() {}
+    virtual void SetUpCommandLine(base::CommandLine* command_line) {}
+    virtual void SetUpOnMainThread() {}
+    virtual void SetUpInProcessBrowserTestFixture() {}
+    virtual void TearDownOnMainThread() {}
+    virtual void TearDownInProcessBrowserTestFixture() {}
+  };
+
   BrowserTestBase();
   virtual ~BrowserTestBase();
 
@@ -130,6 +152,15 @@ class BrowserTestBase : public testing::Test {
   // Returns true if the test will be using GL acceleration via OSMesa.
   bool UsingOSMesa() const;
 
+  // Adds |admixture| as an admixture for this test, passing ownership
+  // for it to BrowserTestBase.
+  // Should be called in constructor of the test (should be already completed
+  // before running set ups).
+  void AddAdmixture(Admixture* admixture);
+
+  // Returns admixtures for this test.
+  std::vector<BrowserTestBase::Admixture*> GetAdmixtures();
+
  private:
   void ProxyRunTestOnMainThreadLoop();
 
@@ -142,6 +173,9 @@ class BrowserTestBase : public testing::Test {
   // Host resolver used during tests.
   scoped_refptr<net::RuleBasedHostResolverProc> rule_based_resolver_;
 
+  // Holds admixtures for this test.
+  ScopedVector<Admixture> admixtures_;
+
   // Expected exit code (default is 0).
   int expected_exit_code_;