more content exports needed for unit_tests and browser_tests.

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 8cfc249af0597a7a8c8dab8acc152afe2acd528b..ae051ef9bc5d14f83e9774f8cf9247e9d974e839 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/memory/ref_counted.h"
 #include "content/browser/browser_child_process_host.h"
+#include "content/common/content_export.h"
 #include "webkit/plugins/webplugininfo.h"
 #include "ui/gfx/native_widget_types.h"
 
@@ -41,7 +42,7 @@ class GURL;
 // starting the plugin process when a plugin is created that doesn't already
 // have a process.  After that, most of the communication is directly between
 // the renderer and plugin processes.
-class PluginProcessHost : public BrowserChildProcessHost {
+class CONTENT_EXPORT PluginProcessHost : public BrowserChildProcessHost {
  public:
   class Client {
    public: