Remove obviously unneeded forward declarations in chrome/browser/[abef]*/*.h.

chrome/browser/automation/automation_provider_json.h

Index: chrome/browser/automation/automation_provider_json.h
diff --git a/chrome/browser/automation/automation_provider_json.h b/chrome/browser/automation/automation_provider_json.h
index 00859fb404ceb6e0d32336dca663678c888e1db6..692af8077b9b0e81bef56c4ebe15ff986b2ea4b5 100644
--- a/chrome/browser/automation/automation_provider_json.h
+++ b/chrome/browser/automation/automation_provider_json.h
@@ -10,10 +10,14 @@
 
 #include <string>
 
-#include "base/values.h"
-#include "ipc/ipc_message.h"
 #include "chrome/browser/automation/automation_provider.h"
 
+class Value;
+
+namespace IPC {
+class Message;
+}
+
 // Helper to ensure we always send a reply message for JSON automation requests.
 class AutomationJSONReply {
  public:
@@ -38,4 +42,3 @@ class AutomationJSONReply {
 };
 
 #endif  // CHROME_BROWSER_AUTOMATION_AUTOMATION_PROVIDER_JSON_H_
-