Upstream Chrome on iOS source code [2/11].

ios/chrome/browser/metrics/new_tab_page_uma.mm

Index: ios/chrome/browser/metrics/new_tab_page_uma.mm
diff --git a/ios/chrome/browser/metrics/new_tab_page_uma.mm b/ios/chrome/browser/metrics/new_tab_page_uma.mm
new file mode 100644
index 0000000000000000000000000000000000000000..0b993ab909ed24e4b9db0ccf388c0d316ca24d97
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+++ b/ios/chrome/browser/metrics/new_tab_page_uma.mm
@@ -0,0 +1,49 @@
+// 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.
+
+#import "ios/chrome/browser/metrics/new_tab_page_uma.h"
+
+#include "base/metrics/histogram.h"
+#include "components/google/core/browser/google_util.h"
+#include "ios/chrome/browser/browser_state/chrome_browser_state.h"
+#include "ios/chrome/browser/chrome_url_constants.h"
+#import "ios/chrome/browser/tabs/tab.h"
+#import "ios/chrome/browser/tabs/tab_model.h"
+#import "ios/chrome/browser/ui/browser_list_ios.h"
+#include "url/gurl.h"
+
+namespace new_tab_page_uma {
+
+bool IsCurrentlyOnNTP(ios::ChromeBrowserState* browserState) {
+  return [[BrowserListIOS::GetLastActiveWithBrowserState(browserState) tabModel]
+             currentTab]
+             .url == GURL(kChromeUINewTabURL);
+}
+
+void RecordAction(ios::ChromeBrowserState* browserState, ActionType type) {
+  DCHECK(browserState);
+  if (!IsCurrentlyOnNTP(browserState) || browserState->IsOffTheRecord())
+    return;
+  base::HistogramBase* counter = base::Histogram::FactoryGet(
+      "NewTabPage.ActioniOS", 0, NUM_ACTION_TYPES, NUM_ACTION_TYPES + 1,
+      base::HistogramBase::kUmaTargetedHistogramFlag);
+  counter->Add(type);
+}
+
+void RecordActionFromOmnibox(ios::ChromeBrowserState* browserState,
+                             const GURL& url,
+                             ui::PageTransition transition) {
+  ui::PageTransition coreTransition = static_cast<ui::PageTransition>(
+      transition & ui::PAGE_TRANSITION_CORE_MASK);
+  if (PageTransitionCoreTypeIs(coreTransition, ui::PAGE_TRANSITION_GENERATED)) {
+    RecordAction(browserState, ACTION_SEARCHED_USING_OMNIBOX);
+  } else {
+    if (google_util::IsGoogleHomePageUrl(GURL(url))) {
+      RecordAction(browserState, ACTION_NAVIGATED_TO_GOOGLE_HOMEPAGE);
+    } else {
+      RecordAction(browserState, ACTION_NAVIGATED_USING_OMNIBOX);
+    }
+  }
+}
+}