Move gesture/touch UMA logs into gesture provider

ui/events/gesture_detection/gesture_touch_uma_histogram.cc

Index: ui/events/gesture_detection/gesture_touch_uma_histogram.cc
diff --git a/ui/events/gesture_detection/gesture_touch_uma_histogram.cc b/ui/events/gesture_detection/gesture_touch_uma_histogram.cc
new file mode 100644
index 0000000000000000000000000000000000000000..51d37313f21f35afa194188d09bd856419973fbd
--- /dev/null
+++ b/ui/events/gesture_detection/gesture_touch_uma_histogram.cc
@@ -0,0 +1,144 @@
+// Copyright 2014 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 "ui/events/gesture_detection/gesture_touch_uma_histogram.h"
+
+#include "base/metrics/histogram.h"
+
+namespace ui {
+
+GestureTouchUMAHistogram::GestureTouchUMAHistogram()
+    : max_distance_from_start_squared_(0), is_single_finger_(true) {
+}
+
+GestureTouchUMAHistogram::~GestureTouchUMAHistogram() {
+}
+
+void GestureTouchUMAHistogram::RecordGestureEvent(
+    const GestureEventData& gesture) {
+  UMA_HISTOGRAM_ENUMERATION(
+      "Event.GestureCreated", UMAEventTypeFromEvent(gesture), UMA_ET_COUNT);
+}
+
+void GestureTouchUMAHistogram::RecordTouchEvent(const MotionEvent& event) {
+  if (event.GetAction() == MotionEvent::ACTION_DOWN) {
+    start_time_ = event.GetEventTime();
+    start_touch_position_ = gfx::Point(event.GetX(), event.GetY());
+    is_single_finger_ = true;
+    max_distance_from_start_squared_ = 0;
+  } else if (event.GetAction() == MotionEvent::ACTION_MOVE &&
+             is_single_finger_) {
+    float cur_dist = (start_touch_position_ -
+                      gfx::Point(event.GetX(), event.GetY())).LengthSquared();
+    if (cur_dist > max_distance_from_start_squared_)
+      max_distance_from_start_squared_ = cur_dist;
+  } else {
+    if (event.GetAction() == MotionEvent::ACTION_UP && is_single_finger_) {
+      UMA_HISTOGRAM_CUSTOM_COUNTS(
+          "Event.TouchMaxDistance",
+          static_cast<int>(sqrt(max_distance_from_start_squared_)),
+          0,
+          1500,
+          50);
+
+      base::TimeDelta duration = event.GetEventTime() - start_time_;
+      UMA_HISTOGRAM_TIMES("Event.TouchDuration2", duration);
+    }
+    is_single_finger_ = false;
+  }
+}
+
+UMAEventType GestureTouchUMAHistogram::UMAEventTypeFromEvent(
+    const GestureEventData& gesture) {
+  switch (gesture.type()) {
+    case ET_TOUCH_RELEASED:
+      return UMA_ET_TOUCH_RELEASED;
+    case ET_TOUCH_PRESSED:
+      return UMA_ET_TOUCH_PRESSED;
+    case ET_TOUCH_MOVED:
+      return UMA_ET_TOUCH_MOVED;
+    case ET_TOUCH_CANCELLED:
+      return UMA_ET_TOUCH_CANCELLED;
+    case ET_GESTURE_SCROLL_BEGIN:
+      return UMA_ET_GESTURE_SCROLL_BEGIN;
+    case ET_GESTURE_SCROLL_END:
+      return UMA_ET_GESTURE_SCROLL_END;
+    case ET_GESTURE_SCROLL_UPDATE: {
+      int touch_points = gesture.details.touch_points();
+      if (touch_points == 1)
+        return UMA_ET_GESTURE_SCROLL_UPDATE;
+      else if (touch_points == 2)
+        return UMA_ET_GESTURE_SCROLL_UPDATE_2;
+      else if (touch_points == 3)
+        return UMA_ET_GESTURE_SCROLL_UPDATE_3;
+      return UMA_ET_GESTURE_SCROLL_UPDATE_4P;
+    }
+    case ET_GESTURE_TAP: {
+      int tap_count = gesture.details.tap_count();
+      if (tap_count == 1)
+        return UMA_ET_GESTURE_TAP;
+      if (tap_count == 2)
+        return UMA_ET_GESTURE_DOUBLE_TAP;
+      if (tap_count == 3)
+        return UMA_ET_GESTURE_TRIPLE_TAP;
+      NOTREACHED() << "Received tap with tapcount " << tap_count;
+      return UMA_ET_UNKNOWN;
+    }
+    case ET_GESTURE_TAP_DOWN:
+      return UMA_ET_GESTURE_TAP_DOWN;
+    case ET_GESTURE_BEGIN:
+      return UMA_ET_GESTURE_BEGIN;
+    case ET_GESTURE_END:
+      return UMA_ET_GESTURE_END;
+    case ET_GESTURE_TWO_FINGER_TAP:
+      return UMA_ET_GESTURE_TWO_FINGER_TAP;
+    case ET_GESTURE_PINCH_BEGIN:
+      return UMA_ET_GESTURE_PINCH_BEGIN;
+    case ET_GESTURE_PINCH_END:
+      return UMA_ET_GESTURE_PINCH_END;
+    case ET_GESTURE_PINCH_UPDATE: {
+      int touch_points = gesture.details.touch_points();
+      if (touch_points >= 4)
+        return UMA_ET_GESTURE_PINCH_UPDATE_4P;
+      else if (touch_points == 3)
+        return UMA_ET_GESTURE_PINCH_UPDATE_3;
+      return UMA_ET_GESTURE_PINCH_UPDATE;
+    }
+    case ET_GESTURE_LONG_PRESS:
+      return UMA_ET_GESTURE_LONG_PRESS;
+    case ET_GESTURE_LONG_TAP:
+      return UMA_ET_GESTURE_LONG_TAP;
+    case ET_GESTURE_SWIPE: {
+      int touch_points = gesture.details.touch_points();
+      if (touch_points == 1)
+        return UMA_ET_GESTURE_SWIPE_1;
+      else if (touch_points == 2)
+        return UMA_ET_GESTURE_SWIPE_2;
+      else if (touch_points == 3)
+        return UMA_ET_GESTURE_SWIPE_3;
+      return UMA_ET_GESTURE_SWIPE_4P;
+    }
+    case ET_GESTURE_WIN8_EDGE_SWIPE:
+      return UMA_ET_GESTURE_WIN8_EDGE_SWIPE;
+    case ET_GESTURE_TAP_CANCEL:
+      return UMA_ET_GESTURE_TAP_CANCEL;
+    case ET_GESTURE_SHOW_PRESS:
+      return UMA_ET_GESTURE_SHOW_PRESS;
+    case ET_SCROLL:
+      return UMA_ET_SCROLL;
+    case ET_SCROLL_FLING_START:
+      return UMA_ET_SCROLL_FLING_START;
+    case ET_SCROLL_FLING_CANCEL:
+      return UMA_ET_SCROLL_FLING_CANCEL;
+    case ET_GESTURE_TAP_UNCONFIRMED:
+      return UMA_ET_GESTURE_TAP_UNCONFIRMED;
+    case ET_GESTURE_DOUBLE_TAP:
+      return UMA_ET_GESTURE_DOUBLE_TAP;
+    default:
+      NOTREACHED();
+      return UMA_ET_UNKNOWN;
+  }
+}
+
+}  //  namespace ui