Use bundled Pepper Flash on Windows (Canary, still on a field trial).

chrome/common/pepper_flash.cc

Index: chrome/common/pepper_flash.cc
diff --git a/chrome/browser/component_updater/pepper_flash_field_trial.cc b/chrome/common/pepper_flash.cc
similarity index 65%
rename from chrome/browser/component_updater/pepper_flash_field_trial.cc
rename to chrome/common/pepper_flash.cc
index 7cea088318b13056480a00899f5b7b9fe82e009f..8f6309c19dd63666e39f054228b308f1de090122 100644
--- a/chrome/browser/component_updater/pepper_flash_field_trial.cc
+++ b/chrome/common/pepper_flash.cc
@@ -2,12 +2,19 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/component_updater/pepper_flash_field_trial.h"
+#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"
+#include "base/string16.h"
 #include "chrome/common/chrome_switches.h"
+#include "chrome/installer/util/browser_distribution.h"
+
+#if defined(OS_WIN)
+#include "base/win/metro.h"
+#endif
 
 namespace {
 
@@ -45,10 +52,7 @@ void ActivateFieldTrial() {
   trial->AppendGroup(kEnableGroupName, 500);
 }
 
-}  // namespace
-
-// static
-bool PepperFlashFieldTrial::InEnableByDefaultGroup() {
+bool IsInFieldTrialGroup() {
   static bool activated = false;
   if (!activated) {
     ActivateFieldTrial();
@@ -59,3 +63,32 @@ bool PepperFlashFieldTrial::InEnableByDefaultGroup() {
   return group != base::FieldTrial::kNotFinalized &&
          group != g_disabled_group_number;
 }
+
+}  // namespace
+
+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
+}