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

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

Index: chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManager.java b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManager.java
index 8c30ddb9974b797f0f7304e990888ebe114881ab..e4217daeea5c3cee3768c928e8d7792bbcf3eaf5 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManager.java
@@ -508,6 +508,9 @@ public class ContextualSearchManager extends ContextualSearchObservable
             }
         }
 
+        mSearchPanel.setShouldAnimateIconSprite(mPolicy.shouldAnimateSearchProviderIcon(

[pedro (no code reviews), 2015/10/29 17:01:42]

Nit: Put a comment here explaining why we are setting this earlier (if the
animation will happen, the icon will start hidden). I'm asking to include a
comment because it's not obvious for those not familiar with the icon sprite
code, and moving this call to a different place might brake the beginning of the
animation.

[Theresa, 2015/10/29 17:44:09]

Done.

+                mSelectionController.getSelectionType(), mSearchPanel.isShowing()));
+
         // TODO(donnd): although we are showing the bar here, we have not yet set the text!
         // Refactor to show the bar and set the text at the same time!
         // TODO(donnd): If there was a previously ongoing contextual search, we should ensure