Initial implementation for sharing field trial state (win)

content/browser/browser_child_process_host_impl.h

Index: content/browser/browser_child_process_host_impl.h
diff --git a/content/browser/browser_child_process_host_impl.h b/content/browser/browser_child_process_host_impl.h
index 43cd8bebc276fc86113f28bc3df96f6bb4824306..3177660b2ea24c751e02eb2c65e49060d7e63b68 100644
--- a/content/browser/browser_child_process_host_impl.h
+++ b/content/browser/browser_child_process_host_impl.h
@@ -12,6 +12,7 @@
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/shared_memory.h"
 #include "base/memory/weak_ptr.h"
 #include "base/process/process.h"
 #include "base/single_thread_task_runner.h"
@@ -65,11 +66,17 @@ class CONTENT_EXPORT BrowserChildProcessHostImpl
   // Copies kEnableFeatures and kDisableFeatures to the command line. Generates
   // them from the FeatureList override state, to take into account overrides
   // from FieldTrials.
+  #if defined(OS_WIN)
+  static void CopyFeatureAndFieldTrialFlags(base::CommandLine* cmd_line,
+                                            base::SharedMemory* shared_memory);
+  #else
   static void CopyFeatureAndFieldTrialFlags(base::CommandLine* cmd_line);
+  #endif
 
   // BrowserChildProcessHost implementation:
   bool Send(IPC::Message* message) override;
   void Launch(SandboxedProcessLauncherDelegate* delegate,
+              base::SharedMemory* field_trial_state,
               base::CommandLine* cmd_line,
               bool terminate_on_shutdown) override;
   const ChildProcessData& GetData() const override;