Stop using an atom to store plugin name/version on Windows.

content/browser/plugin_process_host.h

Index: content/browser/plugin_process_host.h
diff --git a/content/browser/plugin_process_host.h b/content/browser/plugin_process_host.h
index 1006eb1cf1faa1a89636512909c4fc3c5464980f..e4f91130ab35b66cd28f15c84cc2f641aee2ff8b 100644
--- a/content/browser/plugin_process_host.h
+++ b/content/browser/plugin_process_host.h
@@ -16,6 +16,7 @@
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
+#include "base/process/process_handle.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/browser_child_process_host_delegate.h"
 #include "content/public/browser/browser_child_process_host_iterator.h"
@@ -120,6 +121,12 @@ class CONTENT_EXPORT PluginProcessHost : public BrowserChildProcessHostDelegate,
   void AddWindow(HWND window);
 #endif
 
+  // Given a pid of a plugin process, returns the plugin information in |info|
+  // if we know about that process. Otherwise returns false.
+  // This method can be called on any thread.
+  static bool GetWebPluginInfoFromPluginPid(base::ProcessId pid,
+                                            WebPluginInfo* info);
+
  private:
   // Sends a message to the plugin process to request creation of a new channel
   // for the given mime type.
@@ -161,6 +168,9 @@ class CONTENT_EXPORT PluginProcessHost : public BrowserChildProcessHostDelegate,
   // Information about the plugin.
   WebPluginInfo info_;
 
+  // The pid of the plugin process.
+  int pid_;
+
 #if defined(OS_WIN)
   // Tracks plugin parent windows created on the UI thread.
   std::set<HWND> plugin_parent_windows_set_;