added scale animation for context menu

chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ContextMenuHelper.java

Index: chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ContextMenuHelper.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ContextMenuHelper.java b/chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ContextMenuHelper.java
index cd508545aa7a47b1b2f4e3f3a30fdb72ef67c7fa..c2ddf51624140d22a10c738bf8c34b0192576852 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ContextMenuHelper.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ContextMenuHelper.java
@@ -121,6 +121,9 @@ public class ContextMenuHelper implements OnCreateContextMenuListener {
                     shareImageDirectly(ShareHelper.getLastShareComponentName());
                 }
             });
+            ((TabularContextMenuUi) menuUi)
+                    .setContentViewCore(
+                            ContentViewCore.fromWebContents(contentViewCore.getWebContents()));

[Theresa, 2017/05/23 01:58:07]

ContentViewCore is going away, per the warning at the top of
ContentViewCore.java (I should have caught this on the last pass, sorry), so new
uses should not be added.

Instead of passing ContentViewCore to TabularContextMenuUi, can we pass the
RenderCoordinates?

Also, as an aside, if we were going to pass in the ContentViewCore, you could
have passed "contentViewCore" directory rather than using to get a WebContents
than creating another CVC from WebContents.

[Daniel Park, 2017/05/24 16:44:31]

Done.

             menuUi.displayMenu(mActivity, mCurrentContextMenuParams, items, mCallback, mOnMenuShown,
                     mOnMenuClosed);
             if (mCurrentContextMenuParams.isImage()) {
@@ -134,7 +137,7 @@ public class ContextMenuHelper implements OnCreateContextMenuListener {
             return;
         }
 
-        // The Platform Context Menu requires the listener within this hepler since this helper and
+        // The Platform Context Menu requires the listener within this helper since this helper and
         // provides context menu for us to show.
         view.setOnCreateContextMenuListener(this);
         if (view.showContextMenu()) {