Adds speculative prefetching of resources.

chrome/browser/prerender/prerender_field_trial.cc

Index: chrome/browser/prerender/prerender_field_trial.cc
diff --git a/chrome/browser/prerender/prerender_field_trial.cc b/chrome/browser/prerender/prerender_field_trial.cc
index a8e8991df723ba631ba9a38eafab797e3f0d6f3a..8779fa78b87f8c668139c837e3b263414ac133c3 100644
--- a/chrome/browser/prerender/prerender_field_trial.cc
+++ b/chrome/browser/prerender/prerender_field_trial.cc
@@ -278,4 +278,22 @@ bool IsSpeculativeResourcePrefetchingLearningEnabled(Profile* profile) {
   return group == g_speculative_prefetching_learning_default_group_number;
 }
 
+bool IsSpeculativeResourcePrefetchingEnabled(Profile* profile) {
+  if (!profile)
+    return false;
+
+  // Override any field trial groups if the user has set a command line flag.

[dominich, 2012/07/23 16:04:41]

what field trial? You don't check a field trial.

[Shishir, 2012/08/01 22:35:24]

Done.

+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kSpeculativeResourcePrefetching)) {
+    const std::string switch_value =
+        CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+            switches::kSpeculativeResourcePrefetching);
+
+    if (switch_value == switches::kSpeculativeResourcePrefetchingEnabled)
+      return true;
+  }
+
+  return false;
+}
+
 }  // namespace prerender