x11: Remove MessagePumpObserver.

ui/base/clipboard/clipboard_aurax11.cc

Index: ui/base/clipboard/clipboard_aurax11.cc
diff --git a/ui/base/clipboard/clipboard_aurax11.cc b/ui/base/clipboard/clipboard_aurax11.cc
index c85c582d8506633024235ac684c369a5d2fd070c..71739df075286f3b0f759b0b96a20e82a1f7c04a 100644
--- a/ui/base/clipboard/clipboard_aurax11.cc
+++ b/ui/base/clipboard/clipboard_aurax11.cc
@@ -15,8 +15,6 @@
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
-#include "base/message_loop/message_pump_observer.h"
-#include "base/message_loop/message_pump_x11.h"
 #include "base/stl_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkBitmap.h"
@@ -26,7 +24,8 @@
 #include "ui/base/x/selection_utils.h"
 #include "ui/base/x/x11_util.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
-#include "ui/events/platform/x11/x11_event_source.h"
+#include "ui/events/platform/platform_event_observer.h"
+#include "ui/events/platform/platform_event_source.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/size.h"
 #include "ui/gfx/x/x11_atom_cache.h"
@@ -57,7 +56,7 @@ const char* kAtomsToCache[] = {
 ///////////////////////////////////////////////////////////////////////////////
 
 // Uses the XFixes API to provide sequence numbers for GetSequenceNumber().
-class SelectionChangeObserver : public base::MessagePumpObserver {
+class SelectionChangeObserver : public ui::PlatformEventObserver {
  public:
   static SelectionChangeObserver* GetInstance();
 
@@ -72,10 +71,9 @@ class SelectionChangeObserver : public base::MessagePumpObserver {
   SelectionChangeObserver();
   virtual ~SelectionChangeObserver();
 
-  // Overridden from base::MessagePumpObserver:
-  virtual void WillProcessEvent(const base::NativeEvent& event) OVERRIDE;
-  virtual void DidProcessEvent(
-      const base::NativeEvent& event) OVERRIDE {}
+  // ui::PlatformEventObserver:
+  virtual void WillProcessEvent(const ui::PlatformEvent& event) OVERRIDE;
+  virtual void DidProcessEvent(const ui::PlatformEvent& event) OVERRIDE {}
 
   int event_base_;
   Atom clipboard_atom_;
@@ -107,19 +105,19 @@ SelectionChangeObserver::SelectionChangeObserver()
                                XFixesSelectionWindowDestroyNotifyMask |
                                XFixesSelectionClientCloseNotifyMask);
 
-    base::MessagePumpX11::Current()->AddObserver(this);
+    ui::PlatformEventSource::GetInstance()->AddPlatformEventObserver(this);
   }
 }
 
 SelectionChangeObserver::~SelectionChangeObserver() {
-  // We are a singleton; we will outlive our message pump.
+  // We are a singleton; we will outlive the event source.
 }
 
 SelectionChangeObserver* SelectionChangeObserver::GetInstance() {
   return Singleton<SelectionChangeObserver>::get();
 }
 
-void SelectionChangeObserver::WillProcessEvent(const base::NativeEvent& event) {
+void SelectionChangeObserver::WillProcessEvent(const ui::PlatformEvent& event) {
   if (event->type == event_base_ + XFixesSelectionNotify) {
     XFixesSelectionNotifyEvent* ev =
         reinterpret_cast<XFixesSelectionNotifyEvent*>(event);