Field trial synchronization to PPAPI process.

content/browser/ppapi_plugin_process_host.h

Index: content/browser/ppapi_plugin_process_host.h
diff --git a/content/browser/ppapi_plugin_process_host.h b/content/browser/ppapi_plugin_process_host.h
index ca45f3c3d844795cbee18e8fd4933820555c84dd..b769e4fb95457b70d21c4fb1f70b284e5baae423 100644
--- a/content/browser/ppapi_plugin_process_host.h
+++ b/content/browser/ppapi_plugin_process_host.h
@@ -9,6 +9,7 @@
 
 #include <memory>
 #include <queue>
+#include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
@@ -151,6 +152,7 @@ class PpapiPluginProcessHost : public BrowserChildProcessHostDelegate,
 
   // IPC message handlers.
   void OnRendererPluginChannelCreated(const IPC::ChannelHandle& handle);
+  void OnFieldTrialActivated(const std::string& trial_name);
 
   // Handles most requests from the plugin. May be NULL.
   scoped_refptr<PepperMessageFilter> filter_;