Fix the issue that Pepper Flash cannot load on Linux.

chrome/common/pepper_flash.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/pepper_flash.h"
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/memory/ref_counted.h"
 #include "base/metrics/field_trial.h"
@@ skipping 48 matching lines @@
     activated = true;
   }
 
   int group = base::FieldTrialList::FindValue(kFieldTrialName);
   return group != base::FieldTrial::kNotFinalized &&
          group != g_disabled_group_number;
 }
 
 }  // namespace
 
+bool ConductingPepperFlashFieldTrial() {
+#if defined(OS_WIN)
+  return true;
+#else
+  return false;
+#endif
+}
+
 bool IsPepperFlashEnabledByDefault() {
 #if defined(USE_AURA)
   // Pepper Flash is required for Aura (on any OS).
   return true;
 #elif defined(OS_WIN)
   // Pepper Flash is required for Windows 8 Metro mode.
   if (base::win::GetMetroModule())
     return true;
 
   // For other Windows users, enable only for Canary users in a field trial.
   if (!IsInFieldTrialGroup())
     return false;
   BrowserDistribution* dist = BrowserDistribution::GetDistribution();
   if (!dist)
     return false;
   string16 channel;
   if (!dist->GetChromeChannel(&channel))
     return false;
   return (channel == L"canary");
 #elif defined(OS_LINUX)
   // For Linux, always try to use it (availability is checked elsewhere).
   return true;
 #else
   return false;
 #endif
 }