Reland: Plugin Power Saver: Improve Poster behavior for essential plugins.

content/renderer/pepper/plugin_instance_throttler_impl.cc

 // Copyright 2014 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 "content/renderer/pepper/plugin_instance_throttler_impl.h"
 
 #include "base/metrics/histogram.h"
 #include "base/time/time.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/renderer/render_thread.h"
@@ skipping 121 matching lines @@
 void PluginInstanceThrottlerImpl::Initialize(
     RenderFrameImpl* frame,
     const url::Origin& content_origin,
     const std::string& plugin_module_name,
     const gfx::Size& unobscured_size) {
   DCHECK(unobscured_size_.IsEmpty());
   unobscured_size_ = unobscured_size;
 
   // |frame| may be nullptr in tests.
   if (frame) {
-    bool cross_origin_main_content = false;
     float zoom_factor = GetWebPlugin()->container()->pageZoomFactor();
-    if (!frame->ShouldThrottleContent(
-            frame->GetWebFrame()->top()->securityOrigin(), content_origin,
-            roundf(unobscured_size.width() / zoom_factor),
-            roundf(unobscured_size.height() / zoom_factor),
-            &cross_origin_main_content)) {
+    auto status = frame->GetPeripheralContentStatus(
+        frame->GetWebFrame()->top()->securityOrigin(), content_origin,
+        gfx::Size(roundf(unobscured_size.width() / zoom_factor),
+                  roundf(unobscured_size.height() / zoom_factor)));
+    if (status != RenderFrame::CONTENT_STATUS_PERIPHERAL) {
       DCHECK_NE(THROTTLER_STATE_MARKED_ESSENTIAL, state_);
       state_ = THROTTLER_STATE_MARKED_ESSENTIAL;
       FOR_EACH_OBSERVER(Observer, observer_list_, OnPeripheralStateChange());
 
-      if (cross_origin_main_content)
+      if (status == RenderFrame::CONTENT_STATUS_ESSENTIAL_CROSS_ORIGIN_BIG)
         frame->WhitelistContentOrigin(content_origin);
 
       return;
     }
 
     // To collect UMAs, register peripheral content even if power saver mode
     // is disabled.
     frame->RegisterPeripheralPlugin(
         content_origin,
         base::Bind(&PluginInstanceThrottlerImpl::MarkPluginEssential,
@@ skipping 51 matching lines @@
 
     // Release our reference to the underlying pixel data.
     last_received_frame_.reset();
   }
 
   state_ = THROTTLER_STATE_PLUGIN_THROTTLED;
   FOR_EACH_OBSERVER(Observer, observer_list_, OnThrottleStateChange());
 }
 
 }  // namespace content