Revert of Plugin Power Saver: Improve Poster behavior for essential plugins.

chrome/renderer/plugins/chrome_plugin_placeholder.h

Index: chrome/renderer/plugins/chrome_plugin_placeholder.h
diff --git a/chrome/renderer/plugins/chrome_plugin_placeholder.h b/chrome/renderer/plugins/chrome_plugin_placeholder.h
index 0236320be4a6971a60d4b074ddb0c934b562c5e7..85d49b7f3fb923f28b15f8415d052c07df67f945 100644
--- a/chrome/renderer/plugins/chrome_plugin_placeholder.h
+++ b/chrome/renderer/plugins/chrome_plugin_placeholder.h
@@ -5,12 +5,28 @@
 #ifndef CHROME_RENDERER_PLUGINS_CHROME_PLUGIN_PLACEHOLDER_H_
 #define CHROME_RENDERER_PLUGINS_CHROME_PLUGIN_PLACEHOLDER_H_
 
-#include "chrome/renderer/plugins/power_saver_info.h"
 #include "components/plugins/renderer/loadable_plugin_placeholder.h"
 #include "content/public/renderer/context_menu_client.h"
 #include "content/public/renderer/render_process_observer.h"
 
+namespace gfx {
+class Size;
+}
+
 enum class ChromeViewHostMsg_GetPluginInfo_Status;
+
+// This contains information specifying the poster image of plugin placeholders.
+// The default constructor specifies no poster image.
+struct PlaceholderPosterInfo {
+  // The poster image specified in image 'srcset' attribute format.
+  std::string poster_attribute;
+
+  // Used to resolve relative paths in |poster_attribute|.
+  GURL base_url;
+
+  // Specify this to provide partially obscured plugins a centered poster image.
+  gfx::Size custom_poster_size;
+};
 
 class ChromePluginPlaceholder final
     : public plugins::LoadablePluginPlaceholder,
@@ -29,7 +45,7 @@
       const base::string16& name,
       int resource_id,
       const base::string16& message,
-      const PowerSaverInfo& power_saver_info);
+      const PlaceholderPosterInfo& poster_info);
 
   // Creates a new WebViewPlugin with a MissingPlugin as a delegate.
   static ChromePluginPlaceholder* CreateLoadableMissingPlugin(