renderer/extensions: Forward declare a couple of v8 classes in EventBindings header.

BUG=None
TEST=None

R=mpcomplete@chromium.org,darin@chromium.org

Review URL: http://codereview.chromium.org/7774012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@98907 0039d316-1c4b-4281-b951-d872f2087c98

chrome/renderer/extensions/event_bindings.cc

@@ -32,6 +32,7 @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURL.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURLRequest.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
+#include "v8/include/v8.h"
 
 using bindings_utils::CallFunctionInContext;
 using bindings_utils::ContextInfo;

chrome/renderer/extensions/event_bindings.h

@@ -8,8 +8,6 @@
 
 #include <string>
 
-#include "v8/include/v8.h"
-
 class ExtensionDispatcher;
 class GURL;
 class RenderThreadBase;
@@ -19,6 +17,12 @@ namespace base {
 class ListValue;
 }
 
+namespace v8 {
+class Context;
+class Extension;
+template <class T> class Handle;
+}
+
 namespace WebKit {
 class WebFrame;
 }