[refactor] Removing the dead method RenderWidgetHostView::GetSelectedText()

content/browser/renderer_host/render_widget_host_view_mus.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MUS_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MUS_H_
 
 #include <stddef.h>
 
 #include "base/macros.h"
@@ skipping 44 matching lines @@
   bool IsSurfaceAvailableForCopy() const override;
   void Show() override;
   void Hide() override;
   bool IsShowing() override;
   gfx::NativeView GetNativeView() const override;
   gfx::NativeViewAccessible GetNativeViewAccessible() override;
   gfx::Rect GetViewBounds() const override;
   gfx::Vector2dF GetLastScrollOffset() const override;
   void SetBackgroundColor(SkColor color) override;
   gfx::Size GetPhysicalBackingSize() const override;
-  base::string16 GetSelectedText() const override;
 
   // RenderWidgetHostViewBase implementation.
   void InitAsPopup(RenderWidgetHostView* parent_host_view,
                    const gfx::Rect& bounds) override;
   void InitAsFullscreen(RenderWidgetHostView* reference_host_view) override;
   void UpdateCursor(const WebCursor& cursor) override;
   void SetIsLoading(bool is_loading) override;
   void TextInputStateChanged(const TextInputState& params) override;
   void ImeCancelComposition() override;
 #if defined(OS_MACOSX) || defined(USE_AURA)
@@ skipping 53 matching lines @@
   aura::Window* aura_window_;
 
   std::unique_ptr<ui::ScopedWindowPtr> mus_window_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMus);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MUS_H_