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

chrome/browser/renderer_host/chrome_render_widget_host_view_mac_delegate.mm

 // 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.
 
 #import "chrome/browser/renderer_host/chrome_render_widget_host_view_mac_delegate.h"
 
 #include <cmath>
 
 #include "base/sys_string_conversions.h"
 #include "chrome/browser/debugger/devtools_window.h"
 #include "chrome/browser/spellchecker/spellchecker_platform_engine.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #import "chrome/browser/ui/cocoa/history_overlay_controller.h"
 #import "chrome/browser/ui/cocoa/view_id_util.h"
 #include "chrome/common/spellcheck_messages.h"
 #include "content/browser/mac/closure_blocks_leopard_compat.h"
 #include "content/browser/renderer_host/render_view_host.h"
-#include "content/browser/renderer_host/render_view_host_observer.h"
 #include "content/browser/renderer_host/render_widget_host.h"
 #include "content/browser/renderer_host/render_widget_host_view.h"
+#include "content/public/browser/render_view_host_observer.h"
 
 // Declare things that are part of the 10.7 SDK.
 #if !defined(MAC_OS_X_VERSION_10_7) || \
     MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
 enum {
   NSEventPhaseNone        = 0, // event not associated with a phase.
   NSEventPhaseBegan       = 0x1 << 0,
   NSEventPhaseStationary  = 0x1 << 1,
   NSEventPhaseChanged     = 0x1 << 2,
   NSEventPhaseEnded       = 0x1 << 3,
@@ skipping 25 matching lines @@
 
 @interface ChromeRenderWidgetHostViewMacDelegate ()
 - (BOOL)maybeHandleHistorySwiping:(NSEvent*)theEvent;
 - (void)spellCheckEnabled:(BOOL)enabled checked:(BOOL)checked;
 @end
 
 namespace ChromeRenderWidgetHostViewMacDelegateInternal {
 
 // Filters the message sent to RenderViewHost to know if spellchecking is
 // enabled or not for the currently focused element.
-class SpellCheckRenderViewObserver : public RenderViewHostObserver {
+class SpellCheckRenderViewObserver : public content::RenderViewHostObserver {
  public:
   SpellCheckRenderViewObserver(
       RenderViewHost* host,
       ChromeRenderWidgetHostViewMacDelegate* view_delegate)
-      : RenderViewHostObserver(host),
+      : content::RenderViewHostObserver(host),
         view_delegate_(view_delegate) {
   }
 
   virtual ~SpellCheckRenderViewObserver() {
   }
 
  private:
-  // RenderViewHostObserver implementation.
+  // content::RenderViewHostObserver implementation.
   virtual void RenderViewHostDestroyed(RenderViewHost* rvh) OVERRIDE {
     // The parent implementation destroys the observer, scoping the lifetime of
     // the observer to the RenderViewHost. Since this class is acting as a
     // bridge to the view for the delegate below, and is owned by that delegate,
     // undo the scoping by not calling through to the parent implementation.
   }
 
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE {
     bool handled = true;
     IPC_BEGIN_MESSAGE_MAP(SpellCheckRenderViewObserver, message)
@@ skipping 237 matching lines @@
 }
 
 - (void)spellCheckEnabled:(BOOL)enabled checked:(BOOL)checked {
   spellcheck_enabled_ = enabled;
   spellcheck_checked_ = checked;
 }
 
 // END Spellchecking methods
 
 @end