[cc] Rename all cc/ filenames to Chromium style

cc/CCPageScaleAnimation.h

-// Copyright 2011 The Chromium Authors. All rights reserved.
+// 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.
 
-#ifndef CCPageScaleAnimation_h
-#define CCPageScaleAnimation_h
-
-#include "IntSize.h"
-#include <wtf/PassOwnPtr.h>
-
-namespace cc {
-
-// A small helper class that does the math for zoom animations, primarily for
-// double-tap zoom. Initialize it with starting and ending scroll/page scale
-// positions and an animation length time, then call ...AtTime() at every frame
-// to obtain the current interpolated position.
-class CCPageScaleAnimation {
-public:
-    // Construct with the starting page scale and scroll offset (which is in
-    // pageScaleStart space). The window size is the user-viewable area
-    // in pixels.
-    static PassOwnPtr<CCPageScaleAnimation> create(const IntSize& scrollStart, float pageScaleStart, const IntSize& windowSize, const IntSize& contentSize, double startTime);
-
-    // The following methods initialize the animation. Call one of them
-    // immediately after construction to set the final scroll and page scale.
-
-    // Zoom while explicitly specifying the top-left scroll position. The
-    // scroll offset is in finalPageScale coordinates.
-    void zoomTo(const IntSize& finalScroll, float finalPageScale, double duration);
-
-    // Zoom based on a specified onscreen anchor, which will remain at the same
-    // position on the screen throughout the animation. The anchor is in local
-    // space relative to scrollStart.
-    void zoomWithAnchor(const IntSize& anchor, float finalPageScale, double duration);
-
-    // Call these functions while the animation is in progress to output the
-    // current state.
-    IntSize scrollOffsetAtTime(double time) const;
-    float pageScaleAtTime(double time) const;
-    bool isAnimationCompleteAtTime(double time) const;
-
-    // The following methods return state which is invariant throughout the
-    // course of the animation.
-    double startTime() const { return m_startTime; }
-    double duration() const { return m_duration; }
-    double endTime() const { return m_startTime + m_duration; }
-    const IntSize& finalScrollOffset() const { return m_scrollEnd; }
-    float finalPageScale() const { return m_pageScaleEnd; }
-
-protected:
-    CCPageScaleAnimation(const IntSize& scrollStart, float pageScaleStart, const IntSize& windowSize, const IntSize& contentSize, double startTime);
-
-private:
-    float progressRatioForTime(double time) const;
-    IntSize scrollOffsetAtRatio(float ratio) const;
-    float pageScaleAtRatio(float ratio) const;
-
-    IntSize m_scrollStart;
-    float m_pageScaleStart;
-    IntSize m_windowSize;
-    IntSize m_contentSize;
-
-    bool m_anchorMode;
-    IntSize m_anchor;
-    IntSize m_scrollEnd;
-    float m_pageScaleEnd;
-
-    double m_startTime;
-    double m_duration;
-};
-
-} // namespace cc
-
-#endif
+// Temporary forwarding header
+#include "cc/page_scale_animation.h"