[Custom Tabs]Record warnings if given action button bitmap's size out of bound

chrome/android/java/src/org/chromium/chrome/browser/customtabs/ActionButtonParams.java

Index: chrome/android/java/src/org/chromium/chrome/browser/customtabs/ActionButtonParams.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/ActionButtonParams.java b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/ActionButtonParams.java
index f2f4502a5c69bcd616d84b2aff41be248f6f1fff..df1bb3f0fbec7b0a95d6ce958c05cf03bd8673c2 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/ActionButtonParams.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/ActionButtonParams.java
@@ -15,6 +15,7 @@ import android.support.annotation.NonNull;
 import android.support.customtabs.CustomTabsIntent;
 import android.text.TextUtils;
 
+import org.chromium.base.Log;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.util.IntentUtils;
 import org.chromium.chrome.browser.widget.TintedDrawable;
@@ -23,6 +24,8 @@ import org.chromium.chrome.browser.widget.TintedDrawable;
  * Container for all parameters related to creating a custom action button.
  */
 /* package */ class ActionButtonParams {
+    private static final String TAG = "cr_CustomTabs";
+
     private Bitmap mIcon;
     private String mDescription;
     private final PendingIntent mPendingIntent;
@@ -111,6 +114,9 @@ import org.chromium.chrome.browser.widget.TintedDrawable;
         Bitmap bitmap = IntentUtils.safeGetParcelable(bundle, CustomTabsIntent.KEY_ICON);
         if (bitmap == null) return null;
         if (!checkCustomButtonIconWithinBounds(context, bitmap)) {
+            Log.w(TAG, "Action button's icon size not acceptable. Please refer to "
+                    + "https://developer.android.com/reference/android/support/customtabs/"
+                    + "CustomTabsIntent.html#KEY_ICON");
             bitmap.recycle();
             return null;
         }