Revert of Sets the default background color of inline signin and user manager to grey

content/browser/frame_host/render_widget_host_view_guest.cc

 // Copyright 2014 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 "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/frame_host/render_widget_host_view_guest.h"
@@ skipping 337 matching lines @@
 
 void RenderWidgetHostViewGuest::CopyFromCompositingSurface(
     const gfx::Rect& src_subrect,
     const gfx::Size& dst_size,
     CopyFromCompositingSurfaceCallback& callback,
     const SkColorType color_type) {
   CHECK(guest_);
   guest_->CopyFromCompositingSurface(src_subrect, dst_size, callback);
 }
 
-void RenderWidgetHostViewGuest::SetBackgroundColor(SkColor color) {
+void RenderWidgetHostViewGuest::SetBackgroundOpaque(bool opaque) {
   // Content embedders can toggle opaque backgrounds through this API.
   // We plumb the value here so that BrowserPlugin updates its compositing
   // state in response to this change. We also want to preserve this flag
   // after recovering from a crash so we let BrowserPluginGuest store it.
   if (!guest_)
     return;
-  RenderWidgetHostViewBase::SetBackgroundColor(color);
-  bool opaque = GetBackgroundOpaque();
+  RenderWidgetHostViewBase::SetBackgroundOpaque(opaque);
   host_->SetBackgroundOpaque(opaque);
   guest_->SetContentsOpaque(opaque);
 }
 
 bool RenderWidgetHostViewGuest::LockMouse() {
   return platform_view_->LockMouse();
 }
 
 void RenderWidgetHostViewGuest::UnlockMouse() {
   return platform_view_->UnlockMouse();
@@ skipping 217 matching lines @@
   }
 
   if (blink::WebInputEvent::isGestureEventType(event->type)) {
     host_->ForwardGestureEvent(
         *static_cast<const blink::WebGestureEvent*>(event));
     return;
   }
 }
 
 }  // namespace content