Enable pepper flash by default in windows canary

- Enabled by default for new versions of the plugin
- Now it does not auto-disable if enabled

BUG=89248
TEST=see bug
Review URL: http://codereview.chromium.org/8806034

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@113266 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/component_updater/pepper_flash_component_installer.cc

@@ -21,6 +21,7 @@
 #include "chrome/browser/component_updater/component_updater_service.h"
 #include "chrome/browser/plugin_prefs.h"
 #include "chrome/common/chrome_paths.h"
+#include "chrome/installer/util/browser_distribution.h"
 #include "content/browser/plugin_service.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/pepper_plugin_info.h"
@@ -78,12 +79,23 @@ const FilePath::CharType kPepperFlashBaseDirectory[] =
 // If we don't have a Pepper Flash component, this is the version we claim.
 const char kNullVersion[] = "0.0.0.0";
 
-// True if Pepper Flash should be enabled by default.
+// True if Pepper Flash should be enabled by default. Aura builds for any OS
+// and Windows canary have it enabled by default.
+bool IsPepperFlashEnabledByDefault() {
 #if defined(USE_AURA)
-const bool kEnablePepperFlash = true;
+  return true;
+#elif !defined(OS_WIN)
+  return false;
 #else
-const bool kEnablePepperFlash = false;
+  BrowserDistribution* dist = BrowserDistribution::GetDistribution();
+  if (!dist)
+    return false;
+  string16 channel;
+  if (!dist->GetChromeChannel(&channel))
+    return false;
+  return (channel == L"canary");
 #endif
+}
 
 // The base directory on Windows looks like:
 // <profile>\AppData\Local\Google\Chrome\User Data\PepperFlash\.
@@ -160,14 +172,19 @@ bool MakePepperFlashPluginInfo(const FilePath& flash_path,
   return true;
 }
 
+// If it is a |fresh_install| we enable or disable it by default in some
+// configurations. See IsPepperFlashEnabledByDefault() for more information.
 void RegisterPepperFlashWithChrome(const FilePath& path,
-                                   const Version& version) {
+                                   const Version& version,
+                                   bool fresh_install) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   content::PepperPluginInfo plugin_info;
-  // Register it as out-of-process and disabled.
   if (!MakePepperFlashPluginInfo(path, version, true, &plugin_info))
     return;
-  PluginPrefs::EnablePluginGlobally(kEnablePepperFlash, plugin_info.path);
+  if (fresh_install) {
+    PluginPrefs::EnablePluginGlobally(IsPepperFlashEnabledByDefault(),
+                                      plugin_info.path);
+  }
   PluginService::GetInstance()->RegisterInternalPlugin(
       plugin_info.ToWebPluginInfo());
   PluginService::GetInstance()->RefreshPlugins();
@@ -222,7 +239,7 @@ bool PepperFlashComponentInstaller::Install(base::DictionaryValue* manifest,
   PathService::Override(chrome::FILE_PEPPER_FLASH_PLUGIN, path);
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
-      base::Bind(&RegisterPepperFlashWithChrome, path, version));
+      base::Bind(&RegisterPepperFlashWithChrome, path, version, true));
   return true;
 }
 
@@ -311,7 +328,7 @@ void StartPepperFlashUpdateRegistration(ComponentUpdateService* cus) {
     if (file_util::PathExists(path)) {
       BrowserThread::PostTask(
           BrowserThread::UI, FROM_HERE,
-          base::Bind(&RegisterPepperFlashWithChrome, path, version));
+          base::Bind(&RegisterPepperFlashWithChrome, path, version, false));
     } else {
       version = Version(kNullVersion);
     }
@@ -325,8 +342,8 @@ void StartPepperFlashUpdateRegistration(ComponentUpdateService* cus) {
 }  // namespace
 
 void RegisterPepperFlashComponent(ComponentUpdateService* cus) {
-// #if defined(GOOGLE_CHROME_BUILD)
+#if defined(GOOGLE_CHROME_BUILD)
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
                           base::Bind(&StartPepperFlashUpdateRegistration, cus));
-// #endif
+#endif
 }