Plugin Power Saver: Throttle 'large' plugins that appear small.

chrome/renderer/plugins/chrome_plugin_placeholder.cc

Index: chrome/renderer/plugins/chrome_plugin_placeholder.cc
diff --git a/chrome/renderer/plugins/chrome_plugin_placeholder.cc b/chrome/renderer/plugins/chrome_plugin_placeholder.cc
index 6bb6bd2e7366a0febe5f8fbfea6faa04bee8a272..2a8101a5d7bafb79cb9c18150296e40f8ba1664b 100644
--- a/chrome/renderer/plugins/chrome_plugin_placeholder.cc
+++ b/chrome/renderer/plugins/chrome_plugin_placeholder.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/renderer/plugins/chrome_plugin_placeholder.h"
 
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/prerender_messages.h"
@@ -27,6 +28,7 @@
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/webui/jstemplate_builder.h"
+#include "ui/gfx/geometry/size.h"
 #include "url/url_util.h"
 
 using base::UserMetricsAction;
@@ -154,7 +156,8 @@ ChromePluginPlaceholder* ChromePluginPlaceholder::CreateBlockedPlugin(
     int template_id,
     const base::string16& message,
     const std::string& poster_attribute,
-    const GURL& base_url) {
+    const GURL& base_url,
+    const gfx::Size& custom_poster_size) {
   base::DictionaryValue values;
   values.SetString("message", message);
   values.SetString("name", name);
@@ -163,6 +166,13 @@ ChromePluginPlaceholder* ChromePluginPlaceholder::CreateBlockedPlugin(
   if (!poster_attribute.empty()) {
     values.SetString("poster", poster_attribute);
     values.SetString("baseurl", base_url.spec());
+
+    if (!custom_poster_size.IsEmpty()) {
+      values.SetString("visibleWidth",
+                       base::Int64ToString(custom_poster_size.width()) + "px");
+      values.SetString("visibleHeight",
+                       base::Int64ToString(custom_poster_size.height()) + "px");
+    }
   }
 
   const base::StringPiece template_html(