Separate BufferedDataSource and BufferedResourceLoader into two files.

base/test/test_timeouts.h

Index: base/test/test_timeouts.h
diff --git a/base/test/test_timeouts.h b/base/test/test_timeouts.h
index d49ca2c7864e82353d7c9472312a215aa291db56..f4cb1ff7abe671b7887e1ac78b458e214c995500 100644
--- a/base/test/test_timeouts.h
+++ b/base/test/test_timeouts.h
@@ -15,6 +15,9 @@ class TestTimeouts {
   // by the test suite.
   static void Initialize();
 
+  // Timeout for actions that are expected to finish "almost instantly".
+  static int tiny_timeout_ms() { return tiny_timeout_ms_; }
+
   // Timeout to wait for something to happen. If you are not sure
   // which timeout to use, this is the one you want.
   static int action_timeout_ms() { return action_timeout_ms_; }
@@ -52,6 +55,7 @@ class TestTimeouts {
  private:
   static bool initialized_;
 
+  static int tiny_timeout_ms_;
   static int action_timeout_ms_;
   static int action_max_timeout_ms_;
   static int large_test_timeout_ms_;