[Contextual Search] Add support for crushed sprites and animate the search provider icon

chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchPolicy.java

Index: chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchPolicy.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchPolicy.java b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchPolicy.java
index b7c134d46e2a60ac6ac9210c0d1b47f271e78aef..70d23e0f83674563dfc645ac22dcbdd12c760dcd 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchPolicy.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchPolicy.java
@@ -26,6 +26,7 @@ import javax.annotation.Nullable;
 class ContextualSearchPolicy {
     private static final Pattern CONTAINS_WHITESPACE_PATTERN = Pattern.compile("\\s");
     private static final int REMAINING_NOT_APPLICABLE = -1;
+    private static final int ONE_DAY_IN_MILLIS = 24 * 60 * 60 * 1000;
 
     private static ContextualSearchPolicy sInstance;
 
@@ -269,6 +270,38 @@ class ContextualSearchPolicy {
         return !isUserUndecided();
     }
 
+    /**
+     * The search provider icon is animated every time on long press if the user has never opened
+     * the panel before and once a day on tap, except on ldpi devices.
+     *
+     * @param selectionType The type of selection made by the user.
+     * @param isShowing Whether the panel is showing.
+     * @param deviceDensity The logical density of the device's display.
+     * @return Whether the search provider icon should be animated.
+     */
+    boolean shouldAnimateSearchProviderIcon(SelectionType selectionType, boolean isShowing,
+            float deviceDensity) {

[pedro (no code reviews), 2015/10/01 16:38:35]

Nit: We could store the density from the context that gets passed to the
constructor, right? This way we could simplify the method signature by removing
the density.

[Theresa, 2015/10/01 17:57:34]

Done.

+        if (isShowing || deviceDensity < 1.f) {
+            return false;
+        }
+
+        if (selectionType == SelectionType.TAP) {
+            long currentTimeMillis = System.currentTimeMillis();
+            long lastAnimatedTimeMillis =
+                    mPreferenceManager.getContextualSearchLastAnimationTime();
+            if (Math.abs(currentTimeMillis - lastAnimatedTimeMillis) > ONE_DAY_IN_MILLIS) {
+                mPreferenceManager.setContextualSearchLastAnimationTime(currentTimeMillis);
+                return true;
+            } else {
+                return false;
+            }
+        } else if (selectionType == SelectionType.LONG_PRESS) {
+            return DisableablePromoTapCounter.getInstance(mPreferenceManager).isEnabled();
+        }
+
+        return false;
+    }
+
     // --------------------------------------------------------------------------------------------
     // Testing support.
     // --------------------------------------------------------------------------------------------