FBTF: Remove unneeded headers from base/ (part 10)

chrome/default_plugin/plugin_install_job_monitor.h

Index: chrome/default_plugin/plugin_install_job_monitor.h
===================================================================
--- chrome/default_plugin/plugin_install_job_monitor.h	(revision 67155)
+++ chrome/default_plugin/plugin_install_job_monitor.h	(working copy)
@@ -8,7 +8,6 @@
 
 #include <windows.h>
 
-#include "base/logging.h"
 #include "base/thread.h"
 #include "base/ref_counted.h"
 
@@ -16,10 +15,9 @@
 // The PluginInstallationJobMonitorThread class represents a background
 // thread which monitors the install job completion port which is associated
 // with the job when an instance of this class is initialized.
-class PluginInstallationJobMonitorThread :
-    public base::Thread,
-    public base::RefCountedThreadSafe<PluginInstallationJobMonitorThread> {
-
+class PluginInstallationJobMonitorThread
+    : public base::Thread,
+      public base::RefCountedThreadSafe<PluginInstallationJobMonitorThread> {
  public:
   PluginInstallationJobMonitorThread();
 
@@ -32,10 +30,7 @@
   void Stop();
 
   // Simple setter/getters for the plugin window handle.
-  void set_plugin_window(HWND plugin_window) {
-    DCHECK(::IsWindow(plugin_window));
-    plugin_window_ = plugin_window;
-  }
+  void set_plugin_window(HWND plugin_window);
 
   HWND plugin_window() const {
     return plugin_window_;