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

components/omnibox/browser/omnibox_view.h

Index: components/omnibox/browser/omnibox_view.h
diff --git a/components/omnibox/browser/omnibox_view.h b/components/omnibox/browser/omnibox_view.h
index ba019537e2f831b66a4ba7a6c8621656e82b2f87..b049f9babce2e8478773298eeabc5316353f7fd4 100644
--- a/components/omnibox/browser/omnibox_view.h
+++ b/components/omnibox/browser/omnibox_view.h
@@ -23,6 +23,7 @@
 #include "components/omnibox/browser/autocomplete_match.h"
 #include "ui/base/window_open_disposition.h"
 #include "ui/gfx/native_widget_types.h"
+#include "ui/gfx/range/range.h"
 
 class GURL;
 class OmniboxClient;
@@ -248,6 +249,10 @@ class OmniboxView {
   // Internally invoked whenever the text changes in some way.
   virtual void TextChanged();
 
+  // Returns whether the current text in the model represents a URL. Provided
+  // to allow tests to override the result.
+  virtual bool CurrentTextIsURL();
+
   // Return the number of characters in the current buffer. The name
   // |GetTextLength| can't be used as the Windows override of this class
   // inherits from a class that defines a method with that name.
@@ -259,6 +264,24 @@ class OmniboxView {
   OmniboxEditController* controller() { return controller_; }
   const OmniboxEditController* controller() const { return controller_; }
 
+  // Marks part (or, if |range| is invalid, all) of the current text as
+  // emphasized or de-emphasized, by changing its color.
+  virtual void SetEmphasis(bool emphasize, const gfx::Range& range) = 0;
+
+  // Sets the color and strikethrough state for |range|, which represents the
+  // current scheme, based on the current security state.  Schemes are displayed
+  // in different ways for different security levels.
+  virtual void UpdateSchemeStyle(const gfx::Range& range) = 0;
+
+  // Parses |display_text|, then invokes |SetEmphasis| and |UpdateSchemeStyle|

[Peter Kasting, 2017/03/03 02:31:10]

Nit: |SetEmphasis| -> SetEmphasis(), and similar

[elawrence, 2017/03/03 16:07:42]

Done.

+  // appropriately. If the text is a query string, there is no scheme, and
+  // everything is emphasized equally, whereas for URLs the scheme may be styled
+  // based on the current security state, with parts of the URL de-emphasized to
+  // draw attention to whatever best represents the "identity" of the current
+  // URL.
+  void UpdateTextStyle(const base::string16& display_text,
+                       const AutocompleteSchemeClassifier& classifier);
+
  private:
   friend class OmniboxViewMacTest;