Adds logging to indicate infobar creation in the native library,

chrome/browser/ui/android/infobars/translate_infobar.cc

Index: chrome/browser/ui/android/infobars/translate_infobar.cc
diff --git a/chrome/browser/ui/android/infobars/translate_infobar.cc b/chrome/browser/ui/android/infobars/translate_infobar.cc
index b49efe28f6204e1e77e39d550bb96b02679ea77d..fc237c07333c9502b0601b5e0c0e606ffa3c0862 100644
--- a/chrome/browser/ui/android/infobars/translate_infobar.cc
+++ b/chrome/browser/ui/android/infobars/translate_infobar.cc
@@ -17,6 +17,7 @@
 #include "chrome/browser/translate/android/translate_utils.h"
 #include "chrome/browser/translate/chrome_translate_client.h"
 #include "chrome/browser/ui/android/infobars/translate_compact_infobar.h"
+#include "components/translate/core/browser/translate_browser_metrics.h"
 #include "components/translate/core/browser/translate_infobar_delegate.h"
 #include "jni/TranslateInfoBar_jni.h"
 
@@ -28,12 +29,19 @@ using base::android::ScopedJavaLocalRef;
 
 std::unique_ptr<infobars::InfoBar> ChromeTranslateClient::CreateInfoBar(
     std::unique_ptr<translate::TranslateInfoBarDelegate> delegate) const {
-  if (base::FeatureList::IsEnabled(translate::kTranslateCompactUI))
+  if (base::FeatureList::IsEnabled(translate::kTranslateCompactUI)) {
+    translate::TranslateBrowserMetrics::ReportInitiationStatus(

[Leo, 2017/07/06 06:36:42]

We need to add same condition (TRANSLATE_STEP_BEFORE_TRANSLATE) as blow which
will make the data more accurate. For some corner cases, other translate steps
will step in this too. E.g. some user starts translating then closes the
inforbar soon before it completes. So the infobar will be created again when
page is translated.

[ramyasharma, 2017/07/06 06:49:49]

Thanks Leo. Good point. I have moved the logging above the if/else block as it
is common to both. And yes, we are only logging brand new infobars, and not
auto-config infobars. which is different from Android UI logging.

+        translate::TranslateBrowserMetrics::INITIATION_STATUS_CREATE_INFOBAR);
     return base::MakeUnique<TranslateCompactInfoBar>(std::move(delegate));
-  else
-    return base::MakeUnique<TranslateInfoBar>(std::move(delegate));
-}
+  }
 
+  if (delegate.get()->translate_step() ==
+      translate::TRANSLATE_STEP_BEFORE_TRANSLATE) {
+    translate::TranslateBrowserMetrics::ReportInitiationStatus(
+        translate::TranslateBrowserMetrics::INITIATION_STATUS_CREATE_INFOBAR);
+  }
+  return base::MakeUnique<TranslateInfoBar>(std::move(delegate));
+}
 
 // TranslateInfoBar -----------------------------------------------------------