Mark plugin requires restart code/resources Linux-only.

Review-Url: https://codereview.chromium.org/2910823002
Cr-Commit-Position: refs/heads/master@{#476477}

chrome/app/chromium_strings.grd

@@ -1183,9 +1183,11 @@ Please check your email at <ph name="ACCOUNT_EMAIL">$2<ex>jane.doe@example.com</
       </message>
 
       <!-- Plugin Placeholders -->
-      <message name="IDS_PLUGIN_RESTART_REQUIRED" desc="The placeholder text for a plugin that can't be loaded until the browser is restarted.">
-        Restart Chromium to enable <ph name="PLUGIN_NAME">$1<ex>Flash</ex></ph>
-      </message>
+      <if expr="is_linux">
+        <message name="IDS_PLUGIN_RESTART_REQUIRED" desc="The placeholder text for a plugin that can't be loaded until the browser is restarted.">
+          Restart Chromium to enable <ph name="PLUGIN_NAME">$1<ex>Flash</ex></ph>
+        </message>
+      </if>
 
       <!-- Desktop to iOS promotion -->
       <message name="IDS_PASSWORD_MANAGER_DESKTOP_TO_IOS_PROMO_TEXT" desc="Text for Chrome iOS Promotion appearing in the password bubble after a password is saved.">

chrome/app/google_chrome_strings.grd

@@ -1193,9 +1193,11 @@ Please check your email at <ph name="ACCOUNT_EMAIL">$2<ex>jane.doe@example.com</
       </message>
 
       <!-- Plugin Placeholders -->
-      <message name="IDS_PLUGIN_RESTART_REQUIRED" desc="The placeholder text for a plugin that can't be loaded until the browser is restarted.">
-        Restart Chrome to enable <ph name="PLUGIN_NAME">$1<ex>Flash</ex></ph>
-      </message>
+      <if expr="is_linux">
+        <message name="IDS_PLUGIN_RESTART_REQUIRED" desc="The placeholder text for a plugin that can't be loaded until the browser is restarted.">
+          Restart Chrome to enable <ph name="PLUGIN_NAME">$1<ex>Flash</ex></ph>
+        </message>
+      </if>
 
       <!-- Desktop to iOS promotion -->
       <message name="IDS_PASSWORD_MANAGER_DESKTOP_TO_IOS_PROMO_TEXT" desc="Text for Chrome iOS Promotion appearing in the password bubble after a password is saved.">

chrome/browser/plugins/plugin_info_message_filter.cc

@@ -11,6 +11,7 @@
 #include <utility>
 
 #include "base/bind.h"
+#include "base/memory/ptr_util.h"
 #include "base/memory/singleton.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/utf_string_conversions.h"
@@ -497,10 +498,10 @@ void PluginInfoMessageFilter::ComponentPluginLookupDone(
       output->status =
           ChromeViewHostMsg_GetPluginInfo_Status::kRestartRequired;
     }
-#endif  // defined(OS_LINUX)
-    plugin_metadata.reset(new PluginMetadata(
+#endif
+    plugin_metadata = base::MakeUnique<PluginMetadata>(
         cus_plugin_info->id, cus_plugin_info->name, false, GURL(), GURL(),
-        base::ASCIIToUTF16(cus_plugin_info->id), std::string()));
+        base::ASCIIToUTF16(cus_plugin_info->id), std::string());
   }
   GetPluginInfoReply(params, std::move(output), std::move(plugin_metadata),
                      reply_msg);

chrome/common/render_messages.h

@@ -55,7 +55,9 @@ enum class ChromeViewHostMsg_GetPluginInfo_Status {
   kOutdatedBlocked,
   kOutdatedDisallowed,
   kPlayImportantContent,
+#if defined(OS_LINUX)
   kRestartRequired,
+#endif
   kUnauthorized,
 };
 

chrome/renderer/chrome_content_renderer_client.cc

@@ -956,6 +956,7 @@ WebPlugin* ChromeContentRendererClient::CreatePlugin(
             identifier));
         break;
       }
+#if defined(OS_LINUX)
       case ChromeViewHostMsg_GetPluginInfo_Status::kRestartRequired: {
         placeholder = create_blocked_plugin(
             IDR_BLOCKED_PLUGIN_HTML,
@@ -963,6 +964,7 @@ WebPlugin* ChromeContentRendererClient::CreatePlugin(
                                        group_name));
         break;
       }
+#endif
     }
   }
   placeholder->SetStatus(status);