[ContextualSearch] Adds long press promo for Contextual Search.

chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanelBase.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanelBase.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanelBase.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanelBase.java
index 3af21450a9a96a806af3dfc66ede06d07a96623d..3bb40df32a2ef399c290e2b02920593c8615899f 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanelBase.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchPanelBase.java
@@ -547,7 +547,6 @@ abstract class ContextualSearchPanelBase implements ContextualSearchPromoHost {
     private float mSearchBarMarginSide;
     private float mSearchBarHeight;
     private boolean mIsSearchBarBorderVisible;
-    private float mSearchBarBorderY;
     private float mSearchBarBorderHeight;
 
     private boolean mSearchBarShadowVisible = false;
@@ -580,13 +579,6 @@ abstract class ContextualSearchPanelBase implements ContextualSearchPromoHost {
     }
 
     /**
-     * @return The Y coordinate of the Search Bar border.
-     */
-    public float getSearchBarBorderY() {
-        return mSearchBarBorderY;
-    }
-
-    /**
      * @return The height of the Search Bar border.
      */
     public float getSearchBarBorderHeight() {
@@ -685,7 +677,6 @@ abstract class ContextualSearchPanelBase implements ContextualSearchPromoHost {
 
     private float mProgressBarOpacity;
     private boolean mIsProgressBarVisible;
-    private float mProgressBarY;
     private float mProgressBarHeight;
     private int mProgressBarCompletion;
 
@@ -704,13 +695,6 @@ abstract class ContextualSearchPanelBase implements ContextualSearchPromoHost {
     }
 
     /**
-     * @return The Y coordinate of the Progress Bar.
-     */
-    public float getProgressBarY() {
-        return mProgressBarY;
-    }
-
-    /**
      * @return The Progress Bar height.
      */
     public float getProgressBarHeight() {
@@ -1054,7 +1038,13 @@ abstract class ContextualSearchPanelBase implements ContextualSearchPromoHost {
     private float getStateCompletion(float height, PanelState startState, PanelState endState) {
         float startSize = getPanelHeightFromState(startState);
         float endSize = getPanelHeightFromState(endState);
-        float percentage = (height - startSize) / (endSize - startSize);
+        float percentage =
+                // NOTE(pedrosimonetti): Handle special case from PanelState.UNDEFINED
+                // to PanelState.CLOSED, where both have a height of zero. Returning
+                // zero here means the Panel will be reset to its CLOSED state.
+                startSize == 0.f && endSize == 0.f ? 0.f :
+                        (height - startSize) / (endSize - startSize);
+
         return percentage;
     }
 
@@ -1064,7 +1054,7 @@ abstract class ContextualSearchPanelBase implements ContextualSearchPromoHost {
      *
      * @param percentage The completion percentage.
      */
-    private void updatePanelForCloseOrPeek(float percentage) {
+    protected void updatePanelForCloseOrPeek(float percentage) {
         // Update the opt out promo.
         updatePromoVisibility(1.f);
 
@@ -1099,7 +1089,7 @@ abstract class ContextualSearchPanelBase implements ContextualSearchPromoHost {
      *
      * @param percentage The completion percentage.
      */
-    private void updatePanelForExpansion(float percentage) {
+    protected void updatePanelForExpansion(float percentage) {
         // Update the opt out promo.
         updatePromoVisibility(1.f);
 
@@ -1126,7 +1116,6 @@ abstract class ContextualSearchPanelBase implements ContextualSearchPromoHost {
 
         // Search Bar border.
         mIsSearchBarBorderVisible = true;
-        mSearchBarBorderY = searchBarHeight - SEARCH_BAR_BORDER_HEIGHT_DP + 1;
 
         // Determine fading element opacities. The arrow icon needs to finish fading out before
         // the close icon starts fading in. Any other elements fading in or fading out should use
@@ -1154,7 +1143,6 @@ abstract class ContextualSearchPanelBase implements ContextualSearchPromoHost {
         // screen.
         float progressBarOpacity = MathUtils.interpolate(0.f, 1.f, diff / threshold);
         mProgressBarOpacity = progressBarOpacity;
-        mProgressBarY = searchBarHeight - PROGRESS_BAR_HEIGHT_DP + 1;
 
         // Update the Search Bar Shadow.
         updateSearchBarShadow();
@@ -1166,7 +1154,7 @@ abstract class ContextualSearchPanelBase implements ContextualSearchPromoHost {
      *
      * @param percentage The completion percentage.
      */
-    private void updatePanelForMaximization(float percentage) {
+    protected void updatePanelForMaximization(float percentage) {
         // Update the opt out promo.
         float promoVisibilityPercentage = isFullscreenSizePanel() ? 1.f - percentage : 1.f;
         updatePromoVisibility(promoVisibilityPercentage);
@@ -1190,7 +1178,6 @@ abstract class ContextualSearchPanelBase implements ContextualSearchPromoHost {
 
         // Search Bar border.
         mIsSearchBarBorderVisible = true;
-        mSearchBarBorderY = searchBarHeight - SEARCH_BAR_BORDER_HEIGHT_DP + 1;
 
         // Arrow Icon.
         mArrowIconOpacity = ARROW_ICON_OPACITY_STATE_MAXIMIZED;
@@ -1200,7 +1187,6 @@ abstract class ContextualSearchPanelBase implements ContextualSearchPromoHost {
 
         // Progress Bar.
         mProgressBarOpacity = 1.f;
-        mProgressBarY = searchBarHeight - PROGRESS_BAR_HEIGHT_DP + 1;
 
         // Update the Search Bar Shadow.
         updateSearchBarShadow();