cc: Clean up RecordingSource API

cc/test/fake_recording_source.h

Index: cc/test/fake_recording_source.h
diff --git a/cc/test/fake_recording_source.h b/cc/test/fake_recording_source.h
index 20f9538dad5dc5b85c824373aa77a401d940ac6e..dc922f4bf7fe5d9d46e8ecf650d536793660bbe4 100644
--- a/cc/test/fake_recording_source.h
+++ b/cc/test/fake_recording_source.h
@@ -57,7 +57,7 @@ class FakeRecordingSource : public RecordingSource {
   }
 
   void SetRecordedViewport(const gfx::Rect& recorded_viewport) {
-    recorded_viewport_ = recorded_viewport;
+    inputs_.recorded_viewport = recorded_viewport;
   }
 
   void SetLayerBounds(const gfx::Size& layer_bounds) {
@@ -70,7 +70,7 @@ class FakeRecordingSource : public RecordingSource {
   }
 
   void Rerecord() {
-    SetNeedsDisplayRect(recorded_viewport_);
+    SetNeedsDisplayRect(inputs_.recorded_viewport);
     Region invalidation;
     UpdateAndExpandInvalidation(&client_, &invalidation, size_, 0,
                                 RECORD_NORMALLY);
@@ -127,7 +127,7 @@ class FakeRecordingSource : public RecordingSource {
     playback_allowed_event_ = event;
   }
 
-  DisplayItemList* display_list() const { return display_list_.get(); }
+  DisplayItemList* display_list() const { return inputs_.display_list.get(); }
 
   // Checks that the basic properties of the |other| match |this|.  For the
   // DisplayItemList, it checks that the painted result matches the painted