Move renderer plugin code into a new component.

components/plugins.gypi

Index: components/plugins.gypi
diff --git a/components/web_modal.gypi b/components/plugins.gypi
similarity index 36%
copy from components/web_modal.gypi
copy to components/plugins.gypi
index f2db7d4cb830ee920dd2c512a2207be1cb0b1577..8f76700d6435b811a94d4948e86fb361707227bf 100644
--- a/components/web_modal.gypi
+++ b/components/plugins.gypi
@@ -5,29 +5,30 @@
 {
   'targets': [
     {
-      'target_name': 'web_modal',
+      'target_name': 'plugins_renderer',
       'type': 'static_library',
-      'include_dirs': [
-        '..',
-      ],
       'dependencies': [
-        '../base/base.gyp:base',
-        '../content/content.gyp:content_browser',
         '../skia/skia.gyp:skia',
+        '../third_party/re2/re2.gyp:re2',
+        '../third_party/WebKit/public/blink.gyp:blink',
       ],
-      'defines': [
-        'WEB_MODAL_IMPLEMENTATION',
+      'include_dirs': [
+        '..',
       ],
       'sources': [
-        'web_modal/native_web_contents_modal_dialog.h',
-        'web_modal/native_web_contents_modal_dialog_manager.h',
-        'web_modal/web_contents_modal_dialog_host.cc',
-        'web_modal/web_contents_modal_dialog_host.h',
-        'web_modal/web_contents_modal_dialog_manager.cc',
-        'web_modal/web_contents_modal_dialog_manager.h',
-        'web_modal/web_contents_modal_dialog_manager_delegate.cc',
-        'web_modal/web_contents_modal_dialog_manager_delegate.h',
+        'plugins/renderer/plugin_placeholder.cc',
+        'plugins/renderer/plugin_placeholder.h',
+        'plugins/renderer/webview_plugin.cc',
+        'plugins/renderer/webview_plugin.h',
+      ],
+      'conditions' : [
+        ['OS=="android"', {
+          'sources': [
+            'plugins/renderer/mobile_youtube_plugin.cc',
+            'plugins/renderer/mobile_youtube_plugin.h',
+          ]
+        }],
       ],
     },
-  ],
+  ]
 }