Plugin Power Saver: Center 'Play' icon for all partially obscured plugins.

components/plugins/renderer/webview_plugin.h

Index: components/plugins/renderer/webview_plugin.h
diff --git a/components/plugins/renderer/webview_plugin.h b/components/plugins/renderer/webview_plugin.h
index fdb977710d3186661b6472c841d37aa177791e17..e804fd3c3354d2aa094cf1b45fe53babf398c3cf 100644
--- a/components/plugins/renderer/webview_plugin.h
+++ b/components/plugins/renderer/webview_plugin.h
@@ -56,8 +56,8 @@ class WebViewPlugin : public blink::WebPlugin,
     // loaded but idle. Doesn't work for blocked plugins, which is not loaded.
     virtual v8::Local<v8::Object> GetV8ScriptableObject(v8::Isolate*) const = 0;
 
-    // Called when the unobscured size of the plugin is updated.
-    virtual void OnUnobscuredSizeUpdate(const gfx::Size& unobscured_size) {}
+    // Called when the unobscured rect of the plugin is updated.
+    virtual void OnUnobscuredRectUpdate(const gfx::Rect& unobscured_rect) {}
   };
 
   // Convenience method to set up a new WebViewPlugin using |preferences|