[cc] Rename all cc/ filenames to Chromium style

cc/CCPriorityCalculator.cpp

-// Copyright 2012 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 "config.h"
-
-#include "CCPriorityCalculator.h"
-
-using namespace std;
-
-namespace cc {
-
-static const int uiDrawsToRootSurfacePriority = -1;
-static const int visibleDrawsToRootSurfacePriority = 0;
-static const int renderSurfacesPriority = 1;
-static const int uiDoesNotDrawToRootSurfacePriority = 2;
-static const int visibleDoesNotDrawToRootSurfacePriority = 3;
-
-// The lower digits are how far from being visible the texture is,
-// in pixels.
-static const int notVisibleBasePriority = 1000000;
-static const int notVisibleLimitPriority = 1900000;
-
-// Small animated layers are treated as though they are 512 pixels
-// from being visible.
-static const int smallAnimatedLayerPriority = notVisibleBasePriority + 512;
-
-static const int lingeringBasePriority = 2000000;
-static const int lingeringLimitPriority = 2900000;
-
-// static
-int CCPriorityCalculator::uiPriority(bool drawsToRootSurface)
-{
-    return drawsToRootSurface ? uiDrawsToRootSurfacePriority : uiDoesNotDrawToRootSurfacePriority;
-}
-
-// static
-int CCPriorityCalculator::visiblePriority(bool drawsToRootSurface)
-{
-    return drawsToRootSurface ? visibleDrawsToRootSurfacePriority : visibleDoesNotDrawToRootSurfacePriority;
-}
-
-// static
-int CCPriorityCalculator::renderSurfacePriority()
-{
-    return renderSurfacesPriority;
-}
-
-// static
-int CCPriorityCalculator::lingeringPriority(int previousPriority)
-{
-    // FIXME: We should remove this once we have priorities for all
-    //        textures (we can't currently calculate distances for
-    //        off-screen textures).
-    return min(lingeringLimitPriority,
-               max(lingeringBasePriority, previousPriority + 1));
-}
-
-namespace {
-int manhattanDistance(const IntRect& a, const IntRect& b)
-{
-    IntRect c = unionRect(a, b);
-    int x = max(0, c.width() - a.width() - b.width() + 1);
-    int y = max(0, c.height() - a.height() - b.height() + 1);
-    return (x + y);
-}
-}
-
-// static
-int CCPriorityCalculator::priorityFromDistance(const IntRect& visibleRect, const IntRect& textureRect, bool drawsToRootSurface)
-{
-    int distance = manhattanDistance(visibleRect, textureRect);
-    if (!distance)
-        return visiblePriority(drawsToRootSurface);
-    return min(notVisibleLimitPriority, notVisibleBasePriority + distance);
-}
-
-// static
-int CCPriorityCalculator::smallAnimatedLayerMinPriority()
-{
-    return smallAnimatedLayerPriority;
-}
-
-} // cc