Adding UMA stats for Blimp Client

blimp/client/core/contents/blimp_contents_impl.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 "blimp/client/core/contents/blimp_contents_impl.h"
 
 #include "base/memory/ptr_util.h"
+#include "base/metrics/histogram_macros.h"
 #include "base/supports_user_data.h"
 #include "blimp/client/core/contents/blimp_contents_view.h"
 #include "blimp/client/core/contents/tab_control_feature.h"
 #include "blimp/client/public/contents/blimp_contents_observer.h"
 #include "ui/gfx/native_widget_types.h"
 
 #if defined(OS_ANDROID)
 #include "blimp/client/core/contents/android/blimp_contents_impl_android.h"
 #endif  // OS_ANDROID
 
@@ skipping 65 matching lines @@
 void BlimpContentsImpl::RemoveObserver(BlimpContentsObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 gfx::NativeView BlimpContentsImpl::GetNativeView() {
   return blimp_contents_view_->GetNativeView();
 }
 
 void BlimpContentsImpl::Show() {
   compositor_manager_.SetVisible(true);
+  UMA_HISTOGRAM_BOOLEAN("Blimp.Tab.Visible", true);
 }
 
 void BlimpContentsImpl::Hide() {
   compositor_manager_.SetVisible(false);
+  UMA_HISTOGRAM_BOOLEAN("Blimp.Tab.Visible", false);
 }
 
 bool BlimpContentsImpl::HasObserver(BlimpContentsObserver* observer) {
   return observers_.HasObserver(observer);
 }
 
 void BlimpContentsImpl::OnNavigationStateChanged() {
   FOR_EACH_OBSERVER(BlimpContentsObserver, observers_,
                     OnNavigationStateChanged());
 }
 
 void BlimpContentsImpl::OnLoadingStateChanged(bool loading) {
   FOR_EACH_OBSERVER(BlimpContentsObserver, observers_,
                     OnLoadingStateChanged(loading));
 }
 
 void BlimpContentsImpl::SetSizeAndScale(const gfx::Size& size,
                                         float device_pixel_ratio) {
   tab_control_feature_->SetSizeAndScale(size, device_pixel_ratio);
 }
 
 BlimpContentsView* BlimpContentsImpl::GetBlimpContentsView() {
   return blimp_contents_view_.get();
 }
 
 }  // namespace client
 }  // namespace blimp