[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..33c58b52b8b2409b743ab21260694d518911d036 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
@@ -15,6 +15,8 @@ import org.chromium.chrome.browser.preferences.PrefServiceBridge;
 import org.chromium.content.browser.ContentViewCore;
 
 import java.net.URL;
+import java.text.SimpleDateFormat;
+import java.util.Date;
 import java.util.regex.Pattern;
 
 import javax.annotation.Nullable;
@@ -269,6 +271,30 @@ 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.
+     *
+     * @param selectionType The type of selection made by the user.
+     * @return Whether the search provider icon should be animated.
+     */
+    boolean shouldAnimateSearchProviderIcon(SelectionType selectionType) {
+        if (selectionType == SelectionType.TAP) {
+            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-d");

[newt (away), 2015/09/11 23:01:15]

Using System.currentTimeMillis() is much more efficient. It also has the
advantage that night owls won't see the animation twice in a row if they start
using Chrome just before midnight.

  long currentTimeMillis = System.currentTimeMillis();
  long lastTappedTimeMillis =
mPreferenceManager.getContextualSearchLastTapTime();
  if (Math.abs(currentTimeMillis - lastTappedTimeMillis) > ONE_DAY_IN_MILLIS) {
      ...

(I'd use Math.abs() to prevent weirdness in case the user sets their clock way
into the future and then back again)

[Theresa, 2015/09/14 19:48:24]

Done.

+            String date = dateFormat.format(new Date());
+            if (mPreferenceManager.getContextualSearchLastTapDate().equals(date)) {
+                return false;
+            } else {
+                mPreferenceManager.setContextualSearchLastTapDate(date);
+                return true;
+            }
+        } else if (selectionType == SelectionType.LONG_PRESS) {
+            return DisableablePromoTapCounter.getInstance(mPreferenceManager).isEnabled();
+        }
+
+        return false;
+    }
+
     // --------------------------------------------------------------------------------------------
     // Testing support.
     // --------------------------------------------------------------------------------------------