Remove unused fields from //content.

content/browser/frame_host/render_widget_host_view_guest_unittest.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 "content/browser/frame_host/render_widget_host_view_guest.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "base/macros.h"
@@ skipping 120 matching lines @@
                             float scale_factor,
                             const cc::SurfaceSequence& sequence) override {
     last_surface_id_received_ = surface_id;
     last_frame_size_received_ = frame_size;
     last_scale_factor_received_ = scale_factor;
   }
 
   cc::SurfaceId last_surface_id_received_;
   gfx::Size last_frame_size_received_;
   float last_scale_factor_received_;
-  float update_scale_factor_received_;
 };
 
 // TODO(wjmaclean): we should restructure RenderWidgetHostViewChildFrameTest to
 // look more like this one, and then this one could be derived from it. Also,
 // include CreateDelegatedFrame as part of the test class so we don't have to
 // repeat it here.
 class RenderWidgetHostViewGuestSurfaceTest
     : public testing::Test {
  public:
   RenderWidgetHostViewGuestSurfaceTest()
@@ skipping 132 matching lines @@
 
   browser_plugin_guest_->set_attached(false);
   browser_plugin_guest_->ResetTestData();
 
   view_->OnSwapCompositorFrame(
       0, CreateDelegatedFrame(scale_factor, view_size, view_rect));
   EXPECT_TRUE(surface_id().is_null());
 }
 
 }  // namespace content