base: Do not allow MessagePumpObservers to consume events.

ui/gl/gl_surface_glx.cc

 // Copyright (c) 2012 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.
 
 extern "C" {
 #include <X11/Xlib.h>
 }
 
 #include "ui/gl/gl_surface_glx.h"
 
@@ skipping 314 matching lines @@
                              gfx::AcceleratedWidget child_window) {
     DCHECK(child_to_parent_map_.find(child_window) !=
            child_to_parent_map_.end());
     child_to_parent_map_.erase(child_window);
 
     if (child_to_parent_map_.empty())
       base::MessagePumpX11::Current()->RemoveObserver(this);
   }
 
  private:
-  virtual base::EventStatus WillProcessEvent (
-      const base::NativeEvent& xevent) OVERRIDE {
+  virtual void WillProcessEvent(const base::NativeEvent& xevent) OVERRIDE {
     if (xevent->type != Expose)
-      return base::EVENT_CONTINUE;
+      return;
 
     WindowMap::const_iterator found = child_to_parent_map_.find(
         xevent->xexpose.window);
     if (found == child_to_parent_map_.end())
-      return base::EVENT_CONTINUE;
+      return;
 
     gfx::AcceleratedWidget target_window = found->second;
     XEvent forwarded_event = *xevent;
     forwarded_event.xexpose.window = target_window;
     XSendEvent(g_display, target_window, False, ExposureMask,
                &forwarded_event);
-    return base::EVENT_CONTINUE;
   }
   virtual void DidProcessEvent(const base::NativeEvent& xevent) OVERRIDE {
   }
 
   typedef std::map<gfx::AcceleratedWidget, gfx::AcceleratedWidget> WindowMap;
   WindowMap child_to_parent_map_;
 
   DISALLOW_COPY_AND_ASSIGN(XExposeEventForwarder);
 };
 
@@ skipping 428 matching lines @@
 
 void* PbufferGLSurfaceGLX::GetConfig() {
   return config_;
 }
 
 PbufferGLSurfaceGLX::~PbufferGLSurfaceGLX() {
   Destroy();
 }
 
 }  // namespace gfx