Add float version of gfx::Range

ui/gfx/gfx.gyp

 # Copyright (c) 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 223 matching lines @@
         'platform_font_ios.mm',
         'platform_font_mac.h',
         'platform_font_mac.mm',
         'platform_font_ozone.cc',
         'platform_font_pango.cc',
         'platform_font_pango.h',
         'platform_font_win.cc',
         'platform_font_win.h',
         'range/range.cc',
         'range/range.h',
+        'range/range_f.cc',
+        'range/range_f.h',
         'range/range_mac.mm',
         'range/range_win.cc',
         'render_text.cc',
         'render_text.h',
         'render_text_harfbuzz.cc',
         'render_text_harfbuzz.h',
         'render_text_mac.cc',
         'render_text_mac.h',
         'scoped_canvas.h',
         'scoped_cg_context_save_gstate_mac.h',
@@ skipping 226 matching lines @@
          ],
          'variables': {
            'jni_gen_package': 'ui/gfx',
          },
          'includes': [ '../../build/jni_generator.gypi' ],
        },
      ],
     }],
   ],
 }