Plugin Power Saver: Refactor some Tiny plugin code and tests.

content/public/renderer/render_frame.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_RENDERER_RENDER_FRAME_H_
 #define CONTENT_PUBLIC_RENDERER_RENDER_FRAME_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 48 matching lines @@
 struct WebPreferences;
 
 // This interface wraps functionality, which is specific to frames, such as
 // navigation. It provides communication with a corresponding RenderFrameHost
 // in the browser process.
 class CONTENT_EXPORT RenderFrame : public IPC::Listener,
                                    public IPC::Sender {
  public:
   // These numeric values are used in UMA logs; do not change them.
   enum PeripheralContentStatus {
-    // Content is peripheral because it doesn't meet any of the below criteria.
+    // Content is peripheral, and should be throttled, but is not tiny.
     CONTENT_STATUS_PERIPHERAL = 0,
     // Content is essential because it's same-origin with the top-level frame.
     CONTENT_STATUS_ESSENTIAL_SAME_ORIGIN = 1,
     // Content is essential even though it's cross-origin, because it's large.
     CONTENT_STATUS_ESSENTIAL_CROSS_ORIGIN_BIG = 2,
     // Content is essential because there's large content from the same origin.
     CONTENT_STATUS_ESSENTIAL_CROSS_ORIGIN_WHITELISTED = 3,
-    // Content is essential because it's tiny in size.
-    CONTENT_STATUS_ESSENTIAL_CROSS_ORIGIN_TINY = 4,
-    // Content is essential because it has an unknown size.
-    CONTENT_STATUS_ESSENTIAL_UNKNOWN_SIZE = 5,
+    // Content is tiny in size. These are usually blocked.
+    CONTENT_STATUS_TINY = 4,
+    // Content has an unknown size.
+    CONTENT_STATUS_UNKNOWN_SIZE = 5,
     // Must be last.
     CONTENT_STATUS_NUM_ITEMS
   };
 
   enum RecordPeripheralDecision {
     DONT_RECORD_DECISION = 0,
     RECORD_DECISION = 1
   };
 
   // Returns the RenderFrame given a WebFrame.
@@ skipping 156 matching lines @@
 
  private:
   // This interface should only be implemented inside content.
   friend class RenderFrameImpl;
   RenderFrame() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_RENDER_FRAME_H_