Rename PageLifecycleObserver to PageVisibilityObserver

third_party/WebKit/Source/modules/geolocation/Geolocation.h

Index: third_party/WebKit/Source/modules/geolocation/Geolocation.h
diff --git a/third_party/WebKit/Source/modules/geolocation/Geolocation.h b/third_party/WebKit/Source/modules/geolocation/Geolocation.h
index 8c41a8b9205ed15d0bc341523a6f20b7792cee7a..f2883bc3a7b3846d682c3a38f696c6b0013df9d5 100644
--- a/third_party/WebKit/Source/modules/geolocation/Geolocation.h
+++ b/third_party/WebKit/Source/modules/geolocation/Geolocation.h
@@ -29,7 +29,7 @@
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/dom/ContextLifecycleObserver.h"
-#include "core/page/PageLifecycleObserver.h"
+#include "core/page/PageVisibilityObserver.h"
 #include "modules/ModulesExport.h"
 #include "modules/geolocation/GeoNotifier.h"
 #include "modules/geolocation/GeolocationWatchers.h"
@@ -55,7 +55,7 @@ class MODULES_EXPORT Geolocation final
     : public GarbageCollectedFinalized<Geolocation>
     , public ScriptWrappable
     , public ContextLifecycleObserver
-    , public PageLifecycleObserver {
+    , public PageVisibilityObserver {
     DEFINE_WRAPPERTYPEINFO();
     USING_GARBAGE_COLLECTED_MIXIN(Geolocation);
 public:
@@ -63,7 +63,7 @@ public:
     ~Geolocation();
     DECLARE_VIRTUAL_TRACE();
 
-    // Inherited from ContextLifecycleObserver AND PageLifecycleObserver.
+    // Inherited from ContextLifecycleObserver AND PageVisibilityObserver.
     void contextDestroyed() override;
 
     Document* document() const;
@@ -97,7 +97,7 @@ public:
     // Discards the notifier if it is a oneshot because it timed it.
     void requestTimedOut(GeoNotifier*);
 
-    // Inherited from PageLifecycleObserver.
+    // Inherited from PageVisibilityObserver.
     void pageVisibilityChanged() override;
 
 private: