Implement a module system for the extension bindings JS.

chrome/renderer/extensions/page_capture_custom_bindings.h

Index: chrome/renderer/extensions/page_capture_custom_bindings.h
diff --git a/chrome/renderer/extensions/page_capture_custom_bindings.h b/chrome/renderer/extensions/page_capture_custom_bindings.h
index a6ec43333b22024925ce23df37700768ad0e23f8..4796e13efb4c19c431c107cc3d2c42c12944d440 100644
--- a/chrome/renderer/extensions/page_capture_custom_bindings.h
+++ b/chrome/renderer/extensions/page_capture_custom_bindings.h
@@ -13,12 +13,11 @@ namespace extensions {
 // Implements custom bindings for the pageCapture API.
 class PageCaptureCustomBindings : public ChromeV8Extension {
  public:
-  PageCaptureCustomBindings(int dependency_count, const char** dependencies);
-
-  virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
-      v8::Handle<v8::String> name) OVERRIDE;
+  PageCaptureCustomBindings();
 
  private:
+  // Creates a Blob with the content of the specified file.
+  static v8::Handle<v8::Value> CreateBlob(const v8::Arguments& args);
   static v8::Handle<v8::Value> SendResponseAck(const v8::Arguments& args);
 };