[2] Adding a method to PluginFinder to get a PluginInstaller by WebPluginInfo.

chrome/browser/plugin_installer.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/browser/plugin_installer.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/file_util.h"
 #include "base/process.h"
@@ skipping 54 matching lines @@
         base::Bind(callback, content::DownloadId::Invalid(), error));
   }
 }
 
 }  // namespace
 
 PluginInstaller::PluginInstaller(const std::string& identifier,
                                  const string16& name,
                                  bool url_for_display,
                                  const GURL& plugin_url,
-                                 const GURL& help_url)
+                                 const GURL& help_url,
+                                 const string16& group_name_matcher)
     : identifier_(identifier),
       name_(name),
+      group_name_matcher_(group_name_matcher),
       url_for_display_(url_for_display),
       plugin_url_(plugin_url),
       help_url_(help_url),
       state_(INSTALLER_STATE_IDLE) {
 }
 
 PluginInstaller::~PluginInstaller() {
 }
 
 void PluginInstaller::AddVersion(const Version& version,
@@ skipping 155 matching lines @@
   DCHECK_EQ(INSTALLER_STATE_DOWNLOADING, state_);
   state_ = INSTALLER_STATE_IDLE;
   FOR_EACH_OBSERVER(PluginInstallerObserver, observers_, DownloadError(msg));
 }
 
 void PluginInstaller::DownloadCancelled() {
   DCHECK_EQ(INSTALLER_STATE_DOWNLOADING, state_);
   state_ = INSTALLER_STATE_IDLE;
   FOR_EACH_OBSERVER(PluginInstallerObserver, observers_, DownloadCancelled());
 }
+
+bool PluginInstaller::MatchesPlugin(const webkit::WebPluginInfo& plugin) {
+  return plugin.name.find(group_name_matcher_) != string16::npos;
+}