Start wiring up modal dialog experiment in PermissionRequestManager codepath

chrome/browser/permissions/permission_prompt_android.cc

 // Copyright 2016 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/permissions/permission_prompt_android.h"
 
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/permissions/grouped_permission_infobar_delegate_android.h"
+#include "chrome/browser/permissions/permission_dialog_delegate.h"
 #include "chrome/browser/permissions/permission_request.h"
 
 PermissionPromptAndroid::PermissionPromptAndroid(
     content::WebContents* web_contents)
     : web_contents_(web_contents), delegate_(nullptr) {
   DCHECK(web_contents);
 }
 
 PermissionPromptAndroid::~PermissionPromptAndroid() {}
 
 void PermissionPromptAndroid::SetDelegate(Delegate* delegate) {
   delegate_ = delegate;
 }
 
 void PermissionPromptAndroid::Show(
     const std::vector<PermissionRequest*>& requests,
     const std::vector<bool>& values) {
+  // Grouped permission requests are not yet supported in dialogs.
+  // TODO(timloh): Handle grouped media permissions (camera + microphone).
+  if (requests.size() == 1) {
+    bool has_gesture =
+        requests[0]->GetGestureType() == PermissionRequestGestureType::GESTURE;
+    if (PermissionDialogDelegate::ShouldShowDialog(has_gesture)) {
+      requests_ = requests;
+      PermissionDialogDelegate::Create(web_contents_, this);
+      return;
+    }
+  }
+
   InfoBarService* infobar_service =
       InfoBarService::FromWebContents(web_contents_);
   if (!infobar_service)
     return;
 
   requests_ = requests;
   GroupedPermissionInfoBarDelegate::Create(this, infobar_service,
                                            requests[0]->GetOrigin());
 }
 
@@ skipping 62 matching lines @@
     size_t position) const {
   DCHECK_LT(position, requests_.size());
   return requests_[position]->GetMessageTextFragment();
 }
 
 // static
 std::unique_ptr<PermissionPrompt> PermissionPrompt::Create(
     content::WebContents* web_contents) {
   return base::MakeUnique<PermissionPromptAndroid>(web_contents);
 }