Plugin Power Saver Tiny: Treat completely obscured plugins as Tiny.

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/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/time/time.h"
 #include "content/public/common/content_constants.h"
@@ skipping 135 matching lines @@
   unobscured_size_ = unobscured_size;
 
   // |frame| may be nullptr in tests.
   if (frame) {
     float zoom_factor = GetWebPlugin()->container()->pageZoomFactor();
     auto status = frame->GetPeripheralContentStatus(
         frame->GetWebFrame()->top()->getSecurityOrigin(), content_origin,
         gfx::Size(roundf(unobscured_size.width() / zoom_factor),
                   roundf(unobscured_size.height() / zoom_factor)),
         record_decision_);
-    if (status != RenderFrame::CONTENT_STATUS_PERIPHERAL) {
+    if (status != RenderFrame::CONTENT_STATUS_PERIPHERAL &&
+        status != RenderFrame::CONTENT_STATUS_TINY) {
       DCHECK_NE(THROTTLER_STATE_MARKED_ESSENTIAL, state_);
       state_ = THROTTLER_STATE_MARKED_ESSENTIAL;
       for (auto& observer : observer_list_)
         observer.OnPeripheralStateChange();
 
       if (status == RenderFrame::CONTENT_STATUS_ESSENTIAL_CROSS_ORIGIN_BIG)
         frame->WhitelistContentOrigin(content_origin);
 
       return;
     }
@@ skipping 58 matching lines @@
     // Release our reference to the underlying pixel data.
     last_received_frame_.reset();
   }
 
   state_ = THROTTLER_STATE_PLUGIN_THROTTLED;
   for (auto& observer : observer_list_)
     observer.OnThrottleStateChange();
 }
 
 }  // namespace content