Consolidate javascript_dialog_manager.h and javascript_dialog_manager_impl.h

extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.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 "extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.h"
 
 #include "components/app_modal_dialogs/javascript_dialog_extensions_client.h"
 #include "components/app_modal_dialogs/javascript_dialog_manager.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/process_manager.h"
 #include "extensions/common/extension.h"
 #include "ui/gfx/native_widget_types.h"
 
+namespace javascript_dialog_extensions_client {
 namespace {
 
 using extensions::Extension;
 
 // Returns the ProcessManager for the browser context from |web_contents|.
 extensions::ProcessManager* GetProcessManager(
     content::WebContents* web_contents) {
   return extensions::ProcessManager::Get(web_contents->GetBrowserContext());
 }
 
 // Returns the extension associated with |web_contents| or NULL if there is no
 // associated extension (or extensions are not supported).
 const Extension* GetExtensionForWebContents(
     content::WebContents* web_contents) {
   extensions::ProcessManager* pm = GetProcessManager(web_contents);
   return pm->GetExtensionForRenderViewHost(web_contents->GetRenderViewHost());
 }
 
 class JavaScriptDialogExtensionsClientImpl
-    : public JavaScriptDialogExtensionsClient {
+    : public app_modal_dialogs::JavaScriptDialogExtensionsClient {
  public:
   JavaScriptDialogExtensionsClientImpl() {}
   ~JavaScriptDialogExtensionsClientImpl() override {}
 
   // JavaScriptDialogExtensionsClient:
   void OnDialogOpened(content::WebContents* web_contents) override {
     const Extension* extension = GetExtensionForWebContents(web_contents);
     if (extension == nullptr)
       return;
 
@@ skipping 23 matching lines @@
     }
     return false;
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(JavaScriptDialogExtensionsClientImpl);
 };
 
 }  // namespace
 
-void InstallJavaScriptDialogExtensionsClient() {
-  SetJavaScriptDialogExtensionsClient(
-      make_scoped_ptr(new JavaScriptDialogExtensionsClientImpl));
+void InstallClient() {
+  app_modal_dialogs::JavaScriptDialogManager::GetInstance()->
+      SetExtensionsClient(
+          make_scoped_ptr(new JavaScriptDialogExtensionsClientImpl));
 }
+
+}  // namespace javascript_dialog_extensions_client