Use vector assets for media router icons.

ui/gfx/paint_vector_icon.cc

 // Copyright 2015 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.
 
 #include "ui/gfx/paint_vector_icon.h"
 
 #include <map>
 #include <tuple>
 
 #include "base/i18n/rtl.h"
@@ skipping 39 matching lines @@
   RETURN_IF_IS(CIRCLE);
   RETURN_IF_IS(ROUND_RECT);
   RETURN_IF_IS(CLOSE);
   RETURN_IF_IS(CANVAS_DIMENSIONS);
   RETURN_IF_IS(CLIP);
   RETURN_IF_IS(DISABLE_AA);
   RETURN_IF_IS(FLIPS_IN_RTL);
   RETURN_IF_IS(END);
 #undef RETURN_IF_IS
 
-  NOTREACHED();
+  NOTREACHED() << "Unrecognized command: " << source;
   return CLOSE;
 }
 
 std::vector<PathElement> PathFromSource(const std::string& source) {
   std::vector<PathElement> path;
   std::vector<std::string> pieces = base::SplitString(
       source, "\n ,f", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
   for (const auto& piece : pieces) {
     double value;
+    int hex_value;

[msw, 2016/07/14 20:57:02]

nit: init to 0; ditto above.

     if (base::StringToDouble(piece, &value))
       path.push_back(PathElement(SkDoubleToScalar(value)));
+    else if (base::HexStringToInt(piece, &hex_value))
+      path.push_back(PathElement(SkIntToScalar(hex_value)));
     else
       path.push_back(PathElement(CommandFromString(piece)));
   }
   return path;
 }
 
 void PaintPath(Canvas* canvas,
                const PathElement* path_elements,
                size_t dip_size,
                SkColor color) {
@@ skipping 365 matching lines @@
 
 ImageSkia CreateVectorIconFromSource(const std::string& source,
                                      size_t dip_size,
                                      SkColor color) {
   return ImageSkia(
       new VectorIconSource(source, dip_size, color),
       gfx::Size(static_cast<int>(dip_size), static_cast<int>(dip_size)));
 }
 
 }  // namespace gfx