Track the active ExtensionKeybindingRegistry and make it available to EventRewriter.

chrome/browser/extensions/extension_keybinding_registry_tracker.h

Index: chrome/browser/extensions/extension_keybinding_registry_tracker.h
diff --git a/chrome/browser/extensions/extension_keybinding_registry_tracker.h b/chrome/browser/extensions/extension_keybinding_registry_tracker.h
new file mode 100644
index 0000000000000000000000000000000000000000..0b53bb1fbafbd486a70fd7ef57f6bf2ab5ced3a0
--- /dev/null
+++ b/chrome/browser/extensions/extension_keybinding_registry_tracker.h
@@ -0,0 +1,59 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_KEYBINDING_REGISTRY_TRACKER_H_
+#define CHROME_BROWSER_EXTENSIONS_EXTENSION_KEYBINDING_REGISTRY_TRACKER_H_
+
+#include "chrome/browser/extensions/extension_keybinding_registry.h"
+#include "extensions/browser/browser_context_keyed_api_factory.h"
+
+namespace content {
+class BrowserContext;
+}
+
+namespace extensions {
+
+// ExtensionKeybindingRegistryTracker holds the active BrowserWindow's
+// ExtensionKeybindingRegistry.
+class ExtensionKeybindingRegistryTracker : public BrowserContextKeyedAPI {
+ public:
+  explicit ExtensionKeybindingRegistryTracker(content::BrowserContext* context);
+  virtual ~ExtensionKeybindingRegistryTracker();
+
+  // BrowserContextKeyedAPI implementation.
+  static BrowserContextKeyedAPIFactory<ExtensionKeybindingRegistryTracker>*
+      GetFactoryInstance();
+
+  // Convenience method to get the ExtensionKeybindingRegistryTracker for a
+  // browser context.
+  static ExtensionKeybindingRegistryTracker* Get(
+      content::BrowserContext* context);
+
+  // Sets the active ExtensionKeybindingRegistry.
+  void SetActiveRegistry(ExtensionKeybindingRegistry* registry);
+
+  // Gets the active ExtensionKeybindingRegistry.
+  ExtensionKeybindingRegistry* GetActiveRegistry();
+
+ private:
+  friend class BrowserContextKeyedAPIFactory<
+      ExtensionKeybindingRegistryTracker>;
+
+  // BrowserContextKeyedAPI implementation.
+  static const char* service_name() {
+    return "ExtensionKeybindingRegistryTracker";
+  }
+
+  // Weak pointer to our browser context. Not owned by us.
+  content::BrowserContext* browser_context_;
+
+  // The active ExtensionKeybindingRegistry.
+  ExtensionKeybindingRegistry* registry_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionKeybindingRegistryTracker);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_KEYBINDING_REGISTRY_TRACKER_H_