Experience sampling instrumentation for dangerous downloads warnings

chrome/browser/ui/views/download/download_danger_prompt_views.cc

 // Copyright 2013 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 "base/compiler_specific.h"
 #include "chrome/browser/download/download_danger_prompt.h"
 #include "chrome/browser/download/download_stats.h"
+#include "chrome/browser/extensions/api/experience_sampling_private/experience_sampling.h"
 #include "chrome/browser/ui/views/constrained_window_views.h"
 #include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/download_danger_type.h"
 #include "content/public/browser/download_item.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/layout/grid_layout.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/window/dialog_client_view.h"
 #include "ui/views/window/dialog_delegate.h"
 
+using extensions::ExperienceSamplingEvent;
+
 namespace {
 
 const int kMessageWidth = 320;
 const int kParagraphPadding = 15;
 
 // Views-specific implementation of download danger prompt dialog. We use this
 // class rather than a TabModalConfirmDialog so that we can use custom
 // formatting on the text in the body of the dialog.
 class DownloadDangerPromptViews : public DownloadDangerPrompt,
                                   public content::DownloadItem::Observer,
@@ skipping 28 matching lines @@
   base::string16 GetCancelButtonTitle() const;
   // The message lead is separated from the main text and is bolded.
   base::string16 GetMessageLead() const;
   base::string16 GetMessageBody() const;
   void RunDone(Action action);
 
   content::DownloadItem* download_;
   bool show_context_;
   OnDone done_;
 
+  scoped_ptr<ExperienceSamplingEvent> sampling_event_;
+
   views::View* contents_view_;
 };
 
 DownloadDangerPromptViews::DownloadDangerPromptViews(
     content::DownloadItem* item,
     bool show_context,
     const OnDone& done)
     : download_(item),
       show_context_(show_context),
       done_(done),
@@ skipping 28 matching lines @@
 
   views::Label* message_body_label = new views::Label(GetMessageBody());
   message_body_label->SetMultiLine(true);
   message_body_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
   message_body_label->SetAllowCharacterBreak(true);
 
   layout->StartRow(0, 0);
   layout->AddView(message_body_label);
 
   RecordOpenedDangerousConfirmDialog(download_->GetDangerType());
+
+  // ExperienceSampling: A malicious download warning is being shown to the
+  // user, so we start a new SamplingEvent and track it.
+  sampling_event_.reset(new ExperienceSamplingEvent(
+      ExperienceSamplingEvent::kDownloadDangerPrompt,
+      item->GetURL(),
+      item->GetReferrerUrl(),
+      item->GetBrowserContext()));
 }
 
 // DownloadDangerPrompt methods:
 void DownloadDangerPromptViews::InvokeActionForTesting(Action action) {
   switch (action) {
     case ACCEPT:
       Accept();
       break;
 
     case CANCEL:
@@ skipping 33 matching lines @@
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   delete this;
 }
 
 ui::ModalType DownloadDangerPromptViews::GetModalType() const {
   return ui::MODAL_TYPE_CHILD;
 }
 
 bool DownloadDangerPromptViews::Cancel() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  // ExperienceSampling: User canceled the warning.
+  sampling_event_->CreateUserDecisionEvent(ExperienceSamplingEvent::kDeny);
   RunDone(CANCEL);
   return true;
 }
 
 bool DownloadDangerPromptViews::Accept() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  // ExperienceSampling: User proceeded through the warning.
+  sampling_event_->CreateUserDecisionEvent(ExperienceSamplingEvent::kProceed);
   RunDone(ACCEPT);
   return true;
 }
 
 bool DownloadDangerPromptViews::Close() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  // ExperienceSampling: User canceled the warning.
+  sampling_event_->CreateUserDecisionEvent(ExperienceSamplingEvent::kDeny);
   RunDone(DISMISS);
   return true;
 }
 
 views::View* DownloadDangerPromptViews::GetInitiallyFocusedView() {
   return GetDialogClientView()->cancel_button();
 }
 
 views::View* DownloadDangerPromptViews::GetContentsView() {
   return contents_view_;
@@ skipping 132 matching lines @@
 DownloadDangerPrompt* DownloadDangerPrompt::Create(
     content::DownloadItem* item,
     content::WebContents* web_contents,
     bool show_context,
     const OnDone& done) {
   DownloadDangerPromptViews* download_danger_prompt =
       new DownloadDangerPromptViews(item, show_context, done);
   ShowWebModalDialogViews(download_danger_prompt, web_contents);
   return download_danger_prompt;
 }