Try run for https://codereview.chromium.org/426593007.

extensions/browser/extension_function.h

 // Copyright 2013 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 EXTENSIONS_BROWSER_EXTENSION_FUNCTION_H_
 #define EXTENSIONS_BROWSER_EXTENSION_FUNCTION_H_
 
 #include <list>
 #include <string>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/process/process.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/console_message_level.h"
 #include "extensions/browser/extension_function_histogram_value.h"
 #include "extensions/browser/info_map.h"
 #include "extensions/common/extension.h"
+#include "extensions/common/features/feature.h"
 #include "ipc/ipc_message.h"
 
 class ExtensionFunction;
 class UIThreadExtensionFunction;
 class IOThreadExtensionFunction;
 
 namespace base {
 class ListValue;
 class Value;
 }
@@ skipping 206 matching lines @@
   extensions::functions::HistogramValue histogram_value() const {
     return histogram_value_; }
 
   void set_response_callback(const ResponseCallback& callback) {
     response_callback_ = callback;
   }
 
   void set_source_tab_id(int source_tab_id) { source_tab_id_ = source_tab_id; }
   int source_tab_id() const { return source_tab_id_; }
 
+  void set_source_context_type(extensions::Feature::Context type) {
+    source_context_type_ = type;
+  }
+  extensions::Feature::Context source_context_type() const {
+    return source_context_type_;
+  }
+
  protected:
   friend struct ExtensionFunctionDeleteTraits;
 
   // ResponseValues.
   //
   // Success, no arguments to pass to caller
   ResponseValue NoArguments();
   // Success, a single argument |arg| to pass to caller. TAKES OWNERSHIP -- a
   // raw pointer for convenience, since callers usually construct the argument
   // to this by hand.
@@ skipping 106 matching lines @@
   // The sample value to record with the histogram API when the function
   // is invoked.
   extensions::functions::HistogramValue histogram_value_;
 
   // The callback to run once the function has done execution.
   ResponseCallback response_callback_;
 
   // The ID of the tab triggered this function call, or -1 if there is no tab.
   int source_tab_id_;
 
+  // The type of the JavaScript context where this call originated.
+  extensions::Feature::Context source_context_type_;
+
  private:
   void OnRespondingLater(ResponseValue response);
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionFunction);
 };
 
 // Extension functions that run on the UI thread. Most functions fall into
 // this category.
 class UIThreadExtensionFunction : public ExtensionFunction {
  public:
@@ skipping 209 matching lines @@
   virtual bool RunSync() = 0;
 
   // ValidationFailure override to match RunSync().
   static bool ValidationFailure(SyncIOThreadExtensionFunction* function);
 
  private:
   virtual ResponseAction Run() OVERRIDE;
 };
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_FUNCTION_H_