cc: Fix const value pattern by replacing it by non-const or reference.

cc/input/page_scale_animation.h

 // Copyright 2011 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 CC_INPUT_PAGE_SCALE_ANIMATION_H_
 #define CC_INPUT_PAGE_SCALE_ANIMATION_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "cc/base/cc_export.h"
 #include "ui/gfx/geometry/cubic_bezier.h"
 #include "ui/gfx/geometry/size_f.h"
 #include "ui/gfx/geometry/vector2d.h"
 #include "ui/gfx/geometry/vector2d_f.h"
 
 namespace cc {
 
 // Used in the CC to pass around a scale animation that hasn't yet been
 // initialized.
 struct PendingPageScaleAnimation {
-  PendingPageScaleAnimation(
-      const gfx::Vector2d _target_offset,
-      bool _use_anchor,
-      float _scale,
-      const base::TimeDelta& _duration)
-      : target_offset(_target_offset),
-        use_anchor(_use_anchor),
-        scale(_scale),
-        duration(_duration) {}
+  PendingPageScaleAnimation(const gfx::Vector2d& target_offset,
+                            bool use_anchor,
+                            float scale,
+                            const base::TimeDelta& duration)
+      : target_offset(target_offset),
+        use_anchor(use_anchor),
+        scale(scale),
+        duration(duration) {}
   gfx::Vector2d target_offset;
   bool use_anchor;
   float scale;
   base::TimeDelta duration;
 };
 
 // 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. The supplied timing function
@@ skipping 82 matching lines @@
   base::TimeDelta duration_;
 
   const gfx::CubicBezier timing_function_;
 
   DISALLOW_COPY_AND_ASSIGN(PageScaleAnimation);
 };
 
 }  // namespace cc
 
 #endif  // CC_INPUT_PAGE_SCALE_ANIMATION_H_