Plugin Power Saver: Unthrottle dynamically sized plugins correctly.

components/plugins/renderer/webview_plugin.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/plugins/renderer/webview_plugin.h"
 
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/numerics/safe_conversions.h"
 #include "content/public/common/web_preferences.h"
@@ skipping 153 matching lines @@
 void WebViewPlugin::updateGeometry(const WebRect& window_rect,
                                    const WebRect& clip_rect,
                                    const WebRect& unobscured_rect,
                                    const WebVector<WebRect>& cut_outs_rects,
                                    bool is_visible) {
   if (static_cast<gfx::Rect>(window_rect) != rect_) {
     rect_ = window_rect;
     WebSize newSize(window_rect.width, window_rect.height);
     web_view_->resize(newSize);
   }
+
+  if (delegate_)
+    delegate_->OnUnobscuredSizeUpdate(gfx::Rect(unobscured_rect).size());
 }
 
 void WebViewPlugin::updateFocus(bool focused, blink::WebFocusType focus_type) {
   focused_ = focused;
 }
 
 bool WebViewPlugin::acceptsInputEvents() { return true; }
 
 bool WebViewPlugin::handleInputEvent(const WebInputEvent& event,
                                      WebCursorInfo& cursor) {
@@ skipping 79 matching lines @@
 void WebViewPlugin::didClearWindowObject(WebLocalFrame* frame) {
   if (delegate_)
     delegate_->BindWebFrame(frame);
 }
 
 void WebViewPlugin::didReceiveResponse(WebLocalFrame* frame,
                                        unsigned identifier,
                                        const WebURLResponse& response) {
   WebFrameClient::didReceiveResponse(frame, identifier, response);
 }