Move Render(View|Widget)Host and associated classes to content namespace.

chrome/browser/ui/gtk/tabs/dragged_view_gtk.cc

 // Copyright (c) 2012 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/gtk/tabs/dragged_view_gtk.h"
 
 #include <gdk/gdk.h>
 
 #include <algorithm>
 
@@ skipping 381 matching lines @@
 
   // Only used when not attached.
   int tab_height = static_cast<int>(
       kScalingFactor * renderers_[drag_data_->source_tab_index()]->height());
 
   GtkAllocation allocation;
   gtk_widget_get_allocation(widget, &allocation);
 
   // Draw the render area.
   if (!attached_) {
-    RenderWidgetHost* render_widget_host = drag_data_->GetSourceWebContents()->
-      GetRenderViewHost();
+    content::RenderWidgetHost* render_widget_host =
+        drag_data_->GetSourceWebContents()->GetRenderViewHost();
 
     // This leaves room for the border.
     gfx::Rect dest_rect(kDragFrameBorderSize, tab_height,
                         allocation.width - kTwiceDragFrameBorderSize,
                         allocation.height - tab_height -
                         kDragFrameBorderSize);
     render_widget_host->CopyFromBackingStoreToGtkWindow(
         dest_rect, GDK_DRAWABLE(gtk_widget_get_window(widget)));
   }
 
@@ skipping 53 matching lines @@
     if (!attached_) {
       paint_at = widget_width / kScalingFactor -
           GetWidthInTabStripFromTo(0, index + 1);
     }
   }
 
   cairo_set_source_surface(cr, surface, paint_at, 0);
   cairo_paint(cr);
   cairo_surface_destroy(surface);
 }