Add hooks to content to request permission to connect to the PPAPI broker.

chrome/browser/ui/browser.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/browser.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif  // OS_WIN
@@ skipping 1689 matching lines @@
   fullscreen_controller_->LostMouseLock();
 }
 
 void Browser::RequestMediaAccessPermission(
     content::WebContents* web_contents,
     const content::MediaStreamRequest* request,
     const content::MediaResponseCallback& callback) {
   RequestMediaAccessPermissionHelper(web_contents, request, callback);
 }
 
+void Browser::RequestPpapiBrokerPermission(

[brettw, 2012/08/20 05:29:47]

You should be able to do this without touching Browser by using
TabContentsObserver. See hung_plugin_tab_helper.h

[Bernhard Bauer, 2012/08/20 14:43:20]

I was under the impression that WebContentsObserver is only used for
notifications, not for decisions? Specifically, what would happen if more than
one WebContentsObserver would implement this method and both would call the
callback?

[brettw, 2012/08/20 23:36:25]

No, the observes "do stuff" as well. If there were two handlers of this, they
would get different copies of the callback, which would be OK, and they could
both show infobars and potentially notify the RenderView. I think this should
all be OK.

If you register two guys as handling this and get two infobars, well, you got
what you wanted!

[Bernhard Bauer, 2012/08/21 11:50:12]

Done.

+    WebContents* web_contents,
+    const GURL& url,
+    const FilePath& plugin_path,
+    const base::Callback<void(bool)>& callback) {
+  // TODO(bauerb): Request permission.
+  callback.Run(true);
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // Browser, CoreTabHelperDelegate implementation:
 
 void Browser::SwapTabContents(TabContents* old_tab_contents,
                               TabContents* new_tab_contents) {
   int index = tab_strip_model_->GetIndexOfTabContents(old_tab_contents);
   DCHECK_NE(TabStripModel::kNoTab, index);
   tab_strip_model_->ReplaceTabContentsAt(index, new_tab_contents);
 }
 
@@ skipping 599 matching lines @@
   if (contents && !allow_js_access) {
     contents->web_contents()->GetController().LoadURL(
         target_url,
         content::Referrer(),
         content::PAGE_TRANSITION_LINK,
         std::string());  // No extra headers.
   }
 
   return contents != NULL;
 }