Enable Windows Flash hw video decode trial.

content/browser/ppapi_plugin_process_host.cc

Index: content/browser/ppapi_plugin_process_host.cc
===================================================================
--- content/browser/ppapi_plugin_process_host.cc	(revision 246096)
+++ content/browser/ppapi_plugin_process_host.cc	(working copy)
@@ -307,11 +307,15 @@
     // TODO(vtl): Stop passing flash args in the command line, or windows is
     // going to explode.
     std::string field_trial =
-        base::FieldTrialList::FindFullName(kLowLatencyFlashAudioFieldTrialName);
+        base::FieldTrialList::FindFullName(kFlashHwVideoDecodeFieldTrialName);
     std::string existing_args =
         browser_command_line.GetSwitchValueASCII(switches::kPpapiFlashArgs);
-    if (field_trial == kLowLatencyFlashAudioFieldTrialEnabledName)
-      existing_args.append(" enable_low_latency_audio=1");
+    if (field_trial == kFlashHwVideoDecodeFieldTrialEnabledName) {
+      // Arguments passed to Flash are comma delimited.
+      if (existing_args.size())

[Alexei Svitkine (slow), 2014/01/22 16:27:24]

Nit: !existing_args.empty()

+        existing_args.append(",");
+      existing_args.append("enable_hw_video_decode=1");
+    }
     cmd_line->AppendSwitchASCII(switches::kPpapiFlashArgs, existing_args);
   }