Move RenderViewHostObserver to content/public/browser/ and put it into the content namespace.

chrome/browser/debugger/devtools_window.cc

 // Copyright (c) 2011 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 <algorithm>
 
 #include "base/command_line.h"
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/stringprintf.h"
@@ skipping 146 matching lines @@
       GURL(),
       content::PAGE_TRANSITION_START_PAGE,
       std::string());
   return new DevToolsWindow(tab_contents, profile, inspected_rvh, docked);
 }
 
 DevToolsWindow::DevToolsWindow(TabContentsWrapper* tab_contents,
                                Profile* profile,
                                RenderViewHost* inspected_rvh,
                                bool docked)
-    : RenderViewHostObserver(tab_contents->render_view_host()),
+    : content::RenderViewHostObserver(tab_contents->render_view_host()),
       profile_(profile),
       inspected_tab_(NULL),
       tab_contents_(tab_contents),
       browser_(NULL),
       docked_(docked),
       is_loaded_(false),
       action_on_load_(DEVTOOLS_TOGGLE_ACTION_NONE) {
   g_instances.Get().push_back(this);
   // Wipe out page icon so that the default application icon is used.
   NavigationEntry* entry = tab_contents_->controller().GetActiveEntry();
@@ skipping 521 matching lines @@
   RequestSetDocked(false);
 }
 
 content::JavaScriptDialogCreator* DevToolsWindow::GetJavaScriptDialogCreator() {
   if (inspected_tab_ && inspected_tab_->tab_contents()->delegate()) {
     return inspected_tab_->tab_contents()->delegate()->
         GetJavaScriptDialogCreator();
   }
   return TabContentsDelegate::GetJavaScriptDialogCreator();
 }