diff --git a/core/lib/Drupal/Component/Plugin/Context/Context.php b/core/lib/Drupal/Component/Plugin/Context/Context.php
new file mode 100644
index 0000000..5650707
--- /dev/null
+++ b/core/lib/Drupal/Component/Plugin/Context/Context.php
@@ -0,0 +1,52 @@
+<?php
+
+/**
+ * @file
+ * Contains Drupal\Component\Plugin\Context\Context.
+ */
+
+namespace Drupal\Component\Plugin\Context;
+
+use Drupal\Component\Plugin\Exception\ContextException;
+
+class Context {
+
+  /**
+   * The context.
+   *
+   * @var mixed
+   */
+  protected $context;
+
+  /**
+   * The PSR-0 class or an array definition to which context should conform.
+   *
+   * @var mixed
+   *  A string or array.
+   */
+  protected $contextDefinition;
+
+  public function __construct($contextDefinition) {
+    $this->contextDefinition = $contextDefinition;
+  }
+
+  public function setContext($context) {
+    $context = $this->validate($context);
+    $this->context = $context;
+  }
+
+  public function getContext() {
+    return $this->context;
+  }
+
+  public function validate($context) {
+    if (is_string($this->contextDefinition)) {
+      if ($context instanceof $this->contextDefinition) {
+        return $context;
+      }
+      throw new ContextException("The context passed for $key was not an instance of $this->contextDefinition.");
+    }
+    throw new ContextException("An error was encountered while trying to validate the context for $key.");
+  }
+
+}
\ No newline at end of file
diff --git a/core/lib/Drupal/Component/Plugin/ContextualPluginBase.php b/core/lib/Drupal/Component/Plugin/ContextualPluginBase.php
new file mode 100644
index 0000000..d7555d9
--- /dev/null
+++ b/core/lib/Drupal/Component/Plugin/ContextualPluginBase.php
@@ -0,0 +1,87 @@
+<?php
+/**
+ * @file
+ * Definition of Drupal\Component\Plugin\ContextualPluginBase
+ */
+
+namespace Drupal\Component\Plugin;
+
+use Drupal\Component\Plugin\Exception\PluginException;
+use Drupal\Component\Plugin\Context\Context;
+
+/**
+ * Base class for plugins that use context.
+ */
+abstract class ContextualPluginBase extends PluginBase {
+
+  /**
+   * Returns the context definitions of the plugin.
+   *
+   * @return mixed
+   *   The context definitions if set, otherwise NULL.
+   */
+  public function getContextDefinitions() {
+    $definition = $this->getDefinition();
+    return !empty($definition['context']) ? $definition['context'] : NULL;
+  }
+
+  /**
+   * Returns the a specific context class definition of the plugin.
+   *
+   * @return string
+   *   The name of a class to which the set context must conform.
+   */
+  public function getContextDefinition($key) {
+    $definition = $this->getDefinition();
+    if (empty($definition['context'][$key])) {
+      throw new PluginException("The $key context is not a valid context.");
+    }
+    return $definition['context'][$key];
+  }
+
+  /**
+   * Returns the set values for all defined contexts.
+   *
+   * @return array
+   *   Returns the array of all set contexts.
+   */
+  public function getContexts() {
+    if (empty($this->configuration['context'])) {
+      throw new PluginException("There are no set contexts.");
+    }
+    return $this->configuration['context'];
+  }
+
+  /**
+   * Returns the set value for a defined context.
+   *
+   * @return object
+   *   Returns instantiated object of a context.
+   */
+  public function getContext($key) {
+    $definition = $this->getDefinition();
+    if (empty($definition['context'][$key])) {
+      throw new PluginException("The $key context is not a valid context.");
+    }
+    if (empty($this->configuration['context'][$key])) {
+      throw new PluginException("The $key context is not yet set.");
+    }
+
+    return $this->configuration['context'][$key];
+  }
+
+  /**
+   * Sets a defined context to the passed value.
+   *
+   * @return $this
+   *   Returns the plugin instance.
+   */
+  public function setContext($key, $value) {
+    $class = $this->getContextDefinition($key);
+    $this->configuration['context'][$key] = new Context($class);
+    $this->configuration['context'][$key]->setContext($value);
+
+    return $this;
+  }
+
+}
diff --git a/core/lib/Drupal/Component/Plugin/Exception/ContextException.php b/core/lib/Drupal/Component/Plugin/Exception/ContextException.php
new file mode 100644
index 0000000..fbb1c2d
--- /dev/null
+++ b/core/lib/Drupal/Component/Plugin/Exception/ContextException.php
@@ -0,0 +1,15 @@
+<?php
+/**
+ * @file
+ * Definition of Drupal\Component\Plugin\Exception\ContextException.
+ */
+
+namespace Drupal\Component\Plugin\Exception;
+
+use Exception;
+
+/**
+ * Generic Plugin exception class to be thrown when no more specific class
+ * is applicable.
+ */
+class ContextException extends Exception implements ExceptionInterface { }
diff --git a/core/lib/Drupal/Core/Plugin/Context/Context.php b/core/lib/Drupal/Core/Plugin/Context/Context.php
new file mode 100644
index 0000000..3a2e591
--- /dev/null
+++ b/core/lib/Drupal/Core/Plugin/Context/Context.php
@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * @file
+ * Contains Drupal\Core\Plugin\Context\Context.
+ */
+
+namespace Drupal\Core\Plugin\Context;
+
+use Drupal\Component\Plugin\Context\Context as ComponentContext;
+use Drupal\Component\Plugin\Exception\ContextException;
+
+class Context extends ComponentContext {
+
+  /**
+   * Override for Drupal\Component\Plugin\Context\Context::validate().
+   */
+  public function validate($context) {
+    // Check to make sure we have a class name, and that the passed context is
+    // an instance of that class name.
+    if (is_string($this->contextDefinition)) {
+      if ($context instanceof $this->contextDefinition) {
+        return $context;
+      }
+      throw new ContextException("The context passed for $key was not an instance of $this->contextDefinition.");
+    }
+    // Check to see if we have a typed data definition instead of a class name.
+    if (is_array($this->contextDefinition)) {
+      $typed_data = typed_data()->create($this->contextDefinition, $context);
+      // If we do have a typed data definition, validate it and return the
+      // typed data instance instead.
+      if ($typed_data->validate()) {
+        return $typed_data;
+      }
+      throw new ContextException("The context passed for $key could not be validated through typed data.");
+    }
+    throw new ContextException("An error was encountered while trying to validate the context for $key.");
+  }
+
+}
\ No newline at end of file
diff --git a/core/lib/Drupal/Core/Plugin/ContextualPluginBase.php b/core/lib/Drupal/Core/Plugin/ContextualPluginBase.php
new file mode 100644
index 0000000..6516651
--- /dev/null
+++ b/core/lib/Drupal/Core/Plugin/ContextualPluginBase.php
@@ -0,0 +1,28 @@
+<?php
+/**
+ * @file
+ * Definition of Drupal\Core\Plugin\ContextualPluginBase
+ */
+
+namespace Drupal\Core\Plugin;
+
+use Drupal\Component\Plugin\ContextualPluginBase as PluginBase;
+use Drupal\Core\Plugin\Context\Context;
+
+/**
+ * Base class for plugins that use context.
+ */
+abstract class ContextualPluginBase extends PluginBase {
+
+  /**
+   * Override of Drupal\Component\Plugin\ContextualPluginBase::setContext().
+   */
+  public function setContext($key, $value) {
+    $class = $this->getContextDefinition($key);
+    $this->configuration['context'][$key] = new Context($class);
+    $this->configuration['context'][$key]->setContext($value);
+
+    return $this;
+  }
+
+}