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

content/renderer/peripheral_content_heuristic.h

 // 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.
 
 #ifndef CONTENT_RENDERER_PERIPHERAL_CONTENT_HEURISTIC_H_
 #define CONTENT_RENDERER_PERIPHERAL_CONTENT_HEURISTIC_H_
 
 #include <set>
 
 #include "content/common/content_export.h"
+#include "content/public/renderer/render_frame.h"
 #include "url/origin.h"
 
+namespace gfx {
+class Size;
+}
+
 namespace content {
 
 class CONTENT_EXPORT PeripheralContentHeuristic {
  public:
-  // Initial decision of the peripheral content decision.
-  // These numeric values are used in UMA logs; do not change them.
-  enum Decision {
-    HEURISTIC_DECISION_PERIPHERAL = 0,
-    HEURISTIC_DECISION_ESSENTIAL_SAME_ORIGIN = 1,
-    HEURISTIC_DECISION_ESSENTIAL_CROSS_ORIGIN_BIG = 2,
-    HEURISTIC_DECISION_ESSENTIAL_CROSS_ORIGIN_WHITELISTED = 3,
-    HEURISTIC_DECISION_ESSENTIAL_CROSS_ORIGIN_TINY = 4,
-    HEURISTIC_DECISION_ESSENTIAL_UNKNOWN_SIZE = 5,
-    HEURISTIC_DECISION_NUM_ITEMS
-  };
-
   // Returns true if this content should have power saver enabled.
   //
   // Power Saver is enabled for content that are cross-origin and
   // heuristically determined to be not essential to the web page content.
   //
   // Content is defined to be cross-origin when the source's origin differs
   //  from the top level frame's origin. For example:
   //  - Cross-origin:  a.com -> b.com/plugin.swf
   //  - Cross-origin:  a.com -> b.com/iframe.html -> b.com/plugin.swf
   //  - Same-origin:   a.com -> b.com/iframe-to-a.html -> a.com/plugin.swf
   //
   // |origin_whitelist| is the whitelist of content origins.
   //
   // |main_frame_origin| is the origin of the main frame.
   //
   // |content_origin| is the origin of the content e.g. plugin or video source.
   //
-  // |width| and |height| are zoom and device scale independent logical pixels.
-  static Decision GetPeripheralStatus(
+  // |unobscured_size| is in zoom and device scale independent logical pixels.
+  static RenderFrame::PeripheralContentStatus GetPeripheralStatus(
       const std::set<url::Origin>& origin_whitelist,
       const url::Origin& main_frame_origin,
       const url::Origin& content_origin,
-      int width,
-      int height);
+      const gfx::Size& unobscured_size);
 
   // Returns true if content is considered "large", and thus essential.
-  // |width| and |height| are zoom and device scale independent logical pixels.
-  static bool IsLargeContent(int width, int height);
+  // |unobscured_size| is in zoom and device scale independent logical pixels.
+  static bool IsLargeContent(const gfx::Size& unobscured_size);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PERIPHERAL_CONTENT_HEURISTIC_H_