Converts Widget::SetOpacity from char to float

chrome/browser/ui/views/screen_capture_notification_ui_views.cc

 // Copyright 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.
 
 #include "chrome/browser/ui/screen_capture_notification_ui.h"
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/app/chrome_dll_resource.h"
 #include "chrome/browser/ui/views/chrome_views_export.h"
@@ skipping 192 matching lines @@
 
   // Place the bar in the center of the bottom of the display.
   gfx::Size size = widget->non_client_view()->GetPreferredSize();
   gfx::Rect bounds(
       work_area.x() + work_area.width() / 2 - size.width() / 2,
       work_area.y() + work_area.height() - size.height(),
       size.width(), size.height());
   widget->SetBounds(bounds);
   widget->Show();
   // This has to be called after Show() to have effect.
-  widget->SetOpacity(0xFF * kWindowAlphaValue);
+  widget->SetOpacity(kWindowAlphaValue);
   widget->SetVisibleOnAllWorkspaces(true);
 
 #if defined(OS_WIN)
   return gfx::NativeViewId(views::HWNDForWidget(widget));
 #else
   return 0;
 #endif
 }
 
 gfx::Size ScreenCaptureNotificationUIViews::GetPreferredSize() const {
@@ skipping 105 matching lines @@
   }
 }
 
 }  // namespace
 
 std::unique_ptr<ScreenCaptureNotificationUI>
 ScreenCaptureNotificationUI::Create(const base::string16& text) {
   return std::unique_ptr<ScreenCaptureNotificationUI>(
       new ScreenCaptureNotificationUIViews(text));
 }