Seperate horizontal and vertical overscrolling

content/browser/web_contents/aura/window_slider.cc

Index: content/browser/web_contents/aura/window_slider.cc
diff --git a/content/browser/web_contents/aura/window_slider.cc b/content/browser/web_contents/aura/window_slider.cc
index 8b94cd08a867ee2e118c718031a24d23e15b32c9..7afd32dd3d7a345c4f9881aede1d981458493565 100644
--- a/content/browser/web_contents/aura/window_slider.cc
+++ b/content/browser/web_contents/aura/window_slider.cc
@@ -58,8 +58,8 @@ WindowSlider::WindowSlider(Delegate* delegate,
       owner_(owner),
       delta_x_(0.f),
       weak_factory_(this),
-      min_start_threshold_(content::GetOverscrollConfig(
-          content::OVERSCROLL_CONFIG_MIN_THRESHOLD_START)),
+      horiz_start_threshold_(content::GetOverscrollConfig(
+          content::OVERSCROLL_CONFIG_HORIZ_THRESHOLD_START)),
       complete_threshold_(content::GetOverscrollConfig(
           content::OVERSCROLL_CONFIG_HORIZ_THRESHOLD_COMPLETE)) {
   event_window_->AddPreTargetHandler(this);
@@ -89,7 +89,7 @@ void WindowSlider::ChangeOwner(aura::Window* new_owner) {
 }
 
 bool WindowSlider::IsSlideInProgress() const {
-  return fabs(delta_x_) >= min_start_threshold_ || slider_.get() ||
+  return fabs(delta_x_) >= horiz_start_threshold_ || slider_.get() ||
       weak_factory_.HasWeakPtrs();
 }
 
@@ -107,7 +107,7 @@ void WindowSlider::SetupSliderLayer() {
 void WindowSlider::UpdateForScroll(float x_offset, float y_offset) {
   float old_delta = delta_x_;
   delta_x_ += x_offset;
-  if (fabs(delta_x_) < min_start_threshold_ && !slider_.get())
+  if (fabs(delta_x_) < horiz_start_threshold_ && !slider_.get())
     return;
 
   if ((old_delta < 0 && delta_x_ > 0) ||
@@ -127,13 +127,13 @@ void WindowSlider::UpdateForScroll(float x_offset, float y_offset) {
     SetupSliderLayer();
   }
 
-  if (delta_x_ <= -min_start_threshold_) {
+  if (delta_x_ <= -horiz_start_threshold_) {
     translate = owner_->bounds().width() +
-        std::max(delta_x_ + min_start_threshold_,
+        std::max(delta_x_ + horiz_start_threshold_,
                  static_cast<float>(-owner_->bounds().width()));
     translate_layer = slider_.get();
-  } else if (delta_x_ >= min_start_threshold_) {
-    translate = std::min(delta_x_ - min_start_threshold_,
+  } else if (delta_x_ >= horiz_start_threshold_) {
+    translate = std::min(delta_x_ - horiz_start_threshold_,
                          static_cast<float>(owner_->bounds().width()));
     translate_layer = owner_->layer();
   } else {
@@ -153,7 +153,7 @@ void WindowSlider::UpdateForFling(float x_velocity, float y_velocity) {
     return;
 
   int width = owner_->bounds().width();
-  float ratio = (fabs(delta_x_) - min_start_threshold_) / width;
+  float ratio = (fabs(delta_x_) - horiz_start_threshold_) / width;
   if (ratio < complete_threshold_) {
     ResetScroll();
     return;