Move code that doesn't depend on PPAPI out of remoting/client/plugin

remoting/client/plugin/touch_input_scaler.cc

Index: remoting/client/plugin/touch_input_scaler.cc
diff --git a/remoting/client/plugin/touch_input_scaler.cc b/remoting/client/plugin/touch_input_scaler.cc
deleted file mode 100644
index 11396ab931cce35003e79f87962b8b0d3abeb0c3..0000000000000000000000000000000000000000
--- a/remoting/client/plugin/touch_input_scaler.cc
+++ /dev/null
@@ -1,86 +0,0 @@
-// Copyright 2015 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 "remoting/client/plugin/touch_input_scaler.h"
-
-#include "base/logging.h"
-#include "remoting/proto/event.pb.h"
-
-namespace remoting {
-
-using protocol::TouchEvent;
-using protocol::TouchEventPoint;
-
-namespace {
-
-// |value| is the number to be scaled. |output_max| is the output desktop's max
-// height or width. |input_max| is the input desktop's max height or width.
-float Scale(float value, int output_max, int input_max) {
-  DCHECK_GT(output_max, 0);
-  DCHECK_GT(input_max, 0);
-  value *= output_max;
-  value /= input_max;
-  return value;
-}
-
-// Same as Scale() but |value| will be scaled and clamped using |output_max| and
-// |input_max|.
-float ScaleAndClamp(float value, int output_max, int input_max) {
-  value = Scale(value, output_max, input_max);
-  return std::max(0.0f, std::min(static_cast<float>(output_max), value));
-}
-
-}  // namespace
-
-TouchInputScaler::TouchInputScaler(InputStub* input_stub)
-    : InputFilter(input_stub) {}
-
-TouchInputScaler::~TouchInputScaler() {}
-
-void TouchInputScaler::InjectTouchEvent(const TouchEvent& event) {
-  if (input_size_.is_empty() || output_size_.is_empty())
-    return;
-
-  // We scale based on the maximum input & output coordinates, rather than the
-  // input and output sizes, so that it's possible to reach the edge of the
-  // output when up-scaling.  We also take care to round up or down correctly,
-  // which is important when down-scaling.
-  TouchEvent out_event(event);
-  for (int i = 0; i < out_event.touch_points().size(); ++i) {
-    TouchEventPoint* point = out_event.mutable_touch_points(i);
-    if (point->has_x() || point->has_y()) {
-      DCHECK(point->has_x() && point->has_y());
-      point->set_x(
-          ScaleAndClamp(point->x(), output_size_.width(), input_size_.width()));
-      point->set_y(ScaleAndClamp(point->y(), output_size_.height(),
-                                 input_size_.height()));
-    }
-
-    // Also scale the touch size. Without scaling, the size on the host will not
-    // be right.
-    // For example
-    // Suppose:
-    //  - No size scaling.
-    //  - Client is a HiDPI Chromebook device.
-    //  - Host is running on a HiDPI Windows device.
-    // With the configuration above, the client will send the logical touch
-    // size to the host, therefore it will be smaller on the host.
-    // This is because a HiDPI Chromebook device (e.g. Pixel) has 2 by 2
-    // physical pixel mapped to a logical pixel.
-    // With scaling, the size would be the same.
-    // TODO(rkuroiwa): Also clamp. Note that point->angle() affects the maximum
-    // size (crbug.com/461526).
-    if (point->has_radius_x() || point->has_radius_y()) {
-      DCHECK(point->has_radius_x() && point->has_radius_y());
-      point->set_radius_x(
-          Scale(point->radius_x(), output_size_.width(), input_size_.width()));
-      point->set_radius_y(Scale(point->radius_y(), output_size_.height(),
-                                input_size_.height()));
-    }
-  }
-
-  InputFilter::InjectTouchEvent(out_event);
-}
-
-}  // namespace remoting