Use a valid /prefetch argument when launching a process.

content/public/browser/content_browser_client.h

Index: content/public/browser/content_browser_client.h
diff --git a/content/public/browser/content_browser_client.h b/content/public/browser/content_browser_client.h
index 0cf89389b7476c3c277f3aa602dfc935814b07e7..c3620cfa49631ca5fd49fbb716ecdfb6e0873f78 100644
--- a/content/public/browser/content_browser_client.h
+++ b/content/public/browser/content_browser_client.h
@@ -751,6 +751,9 @@ class CONTENT_EXPORT ContentBrowserClient {
   // an AppContainer.
   virtual base::string16 GetAppContainerSidForSandboxType(
       int sandbox_type) const;
+
+  // Returns true if processes should be launched with a /prefetch:# argument.

[gab, 2016/01/26 21:40:26]

Also refer to a place where you explain the details of /prefetch (e.g.
kPrefetchArgument* section of the switches.cc file?) -- i.e. think of any
content embedder seeing this new API and wondering what to do with it.

[fdoray, 2016/01/27 20:12:19]

Done.

+  virtual bool ShouldUseWindowsPrefetchArgument() const;
 #endif
 
 #if defined(VIDEO_HOLE)