Send all field trials from the browser.

chrome/browser/renderer_host/chrome_render_message_filter.h

Index: chrome/browser/renderer_host/chrome_render_message_filter.h
diff --git a/chrome/browser/renderer_host/chrome_render_message_filter.h b/chrome/browser/renderer_host/chrome_render_message_filter.h
index e9d6859aed66540390112d83e25e7d1aff23282a..6ac391ed485fdbbc81858b920bf88f9020706920 100644
--- a/chrome/browser/renderer_host/chrome_render_message_filter.h
+++ b/chrome/browser/renderer_host/chrome_render_message_filter.h
@@ -118,6 +118,10 @@ class ChromeRenderMessageFilter : public content::BrowserMessageFilter {
   void OnIsCrashReportingEnabled(bool* enabled);
 #endif
 
+  // Called when a message is received from a renderer that a trial has been
+  // activated (ChromeViewHostMsg_FieldTrialActivated).
+  void OnFieldTrialActivated(const std::string& trial_name);
+
   const int render_process_id_;
 
   // The Profile associated with our renderer process.  This should only be