Show scheme in black and content in gray for data: protocol urls

components/omnibox/browser/omnibox_view.h

 // Copyright (c) 2012 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.
 
 // This file defines the interface class OmniboxView.  Each toolkit will
 // implement the edit view differently, so that code is inherently platform
 // specific.  However, the OmniboxEditModel needs to do some communication with
 // the view.  Since the model is shared between platforms, we need to define an
 // interface that all view implementations will share.
 
@@ skipping 241 matching lines @@
   // |GetTextLength| can't be used as the Windows override of this class
   // inherits from a class that defines a method with that name.
   virtual int GetOmniboxTextLength() const = 0;
 
   // Try to parse the current text as a URL and colorize the components.
   virtual void EmphasizeURLComponents() = 0;
 
   OmniboxEditController* controller() { return controller_; }
   const OmniboxEditController* controller() const { return controller_; }
 
+  // Deemphasize parts of the URL to draw attention to whatever best represents
+  // the "identity" of the URL.
+  enum DEEMPHASIZE_COMPONENTS {

[Peter Kasting, 2017/02/24 01:53:40]

This should be CamelCase.

+    EVERYTHING,
+    ALL_BUT_SCHEME,
+    ALL_BUT_HOST,
+    NOTHING,
+  };
+  DEEMPHASIZE_COMPONENTS GetDeemphasis(const base::string16& url_scheme,
+                                       const bool has_host) const;
+
  private:
   friend class OmniboxViewMacTest;
 
   // |model_| can be NULL in tests.
   std::unique_ptr<OmniboxEditModel> model_;
   OmniboxEditController* controller_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxView);
 };
 
 #endif  // COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_VIEW_H_