Record the data use by content type

components/data_use_measurement/core/data_use_user_data.h

Index: components/data_use_measurement/core/data_use_user_data.h
diff --git a/components/data_use_measurement/core/data_use_user_data.h b/components/data_use_measurement/core/data_use_user_data.h
index cfae6b9b75c9c6c3e21d295005915ddb3064d387..1b7c3c364f59a7cd82b495e997a7a08977f21b10 100644
--- a/components/data_use_measurement/core/data_use_user_data.h
+++ b/components/data_use_measurement/core/data_use_user_data.h
@@ -52,6 +52,19 @@ class DataUseUserData : public base::SupportsUserData::Data {
     UPDATE_CLIENT,
   };
 
+  // Content type of the URL request.
+  enum ContentType {
+    MAIN_FRAME_HTML,
+    NON_MAIN_FRAME_HTML,
+    CSS,
+    IMAGE,
+    JAVASCRIPT,
+    FONT,
+    AUDIO,
+    VIDEO,
+    OTHER,
+  };
+
   // The state of the application. Only available on Android and on other
   // platforms it is always FOREGROUND.
   enum AppState { UNKNOWN, BACKGROUND, FOREGROUND };
@@ -78,6 +91,12 @@ class DataUseUserData : public base::SupportsUserData::Data {
 
   void set_app_state(AppState app_state) { app_state_ = app_state; }
 
+  ContentType content_type() { return content_type_; }
+
+  void set_content_type(ContentType content_type) {
+    content_type_ = content_type;
+  }
+
   // The key for retrieving back this type of user data.
   static const void* const kUserDataKey;
 
@@ -87,6 +106,8 @@ class DataUseUserData : public base::SupportsUserData::Data {
   // App state when network access was performed for the request previously.
   AppState app_state_;
 
+  ContentType content_type_;
+
   DISALLOW_COPY_AND_ASSIGN(DataUseUserData);
 };