Add PermissionPromptAndroid skeleton

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/media/webrtc/media_stream_devices_controller.h"
+#include "chrome/browser/permissions/grouped_permission_infobar_delegate_android.h"
+#include "chrome/browser/permissions/permission_request.h"
+#include "chrome/browser/permissions/permission_request_id.h"
+#include "components/infobars/core/infobar.h"
+#include "content/public/browser/web_contents.h"
+
+PermissionPromptAndroid::PermissionPromptAndroid(
+    content::WebContents* web_contents)
+    : web_contents_(web_contents), delegate_(nullptr), infobar_(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) {
+  InfoBarService* infobar_service =
+      InfoBarService::FromWebContents(web_contents_);
+  if (!infobar_service)
+    return;
+
+  infobar_ = GroupedPermissionInfoBarDelegate::Create(
+      infobar_service, requests[0]->GetOrigin(), requests);
+}
+
+bool PermissionPromptAndroid::CanAcceptRequestUpdate() {
+  return false;
+}
+
+void PermissionPromptAndroid::Hide() {
+  InfoBarService* infobar_service =
+      InfoBarService::FromWebContents(web_contents_);
+  if (infobar_ && infobar_service) {
+    infobar_service->RemoveInfoBar(infobar_);
+    infobar_ = nullptr;

[raymes, 2016/10/26 05:37:36]

Should we clear the pointer here even if there is no infobar_service? (I think
we can clear it unconditionally)

[lshang, 2016/10/26 05:55:49]

Done. Yeah we should clear it if infobar_service is null.

+  }
+}
+
+bool PermissionPromptAndroid::IsVisible() {
+  return infobar_ != nullptr;
+}
+
+void PermissionPromptAndroid::UpdateAnchorPosition() {
+  NOTREACHED() << "UpdateAnchorPosition is not implemented";
+}
+
+gfx::NativeWindow PermissionPromptAndroid::GetNativeWindow() {
+  NOTREACHED() << "GetNativeWindow is not implemented";
+  return nullptr;
+}
+
+void PermissionPromptAndroid::Closing() {
+  if (infobar_)

[raymes, 2016/10/26 05:37:36]

nit: we can probably remove this

[lshang, 2016/10/26 05:55:49]

Done.

+    infobar_ = nullptr;
+  if (delegate_)
+    delegate_->Closing();
+}
+
+// static
+std::unique_ptr<PermissionPrompt> PermissionPrompt::Create(
+    content::WebContents* web_contents) {
+  return base::MakeUnique<PermissionPromptAndroid>(web_contents);
+}