[Suggestions UI] Drop Bitmap references from articles under memory pressure.

chrome/android/java/src/org/chromium/chrome/browser/suggestions/SuggestionsBottomSheetContent.java

Index: chrome/android/java/src/org/chromium/chrome/browser/suggestions/SuggestionsBottomSheetContent.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/suggestions/SuggestionsBottomSheetContent.java b/chrome/android/java/src/org/chromium/chrome/browser/suggestions/SuggestionsBottomSheetContent.java
index 6c10e4a5fedfaf00ce12fb41ee3166fbde1ed397..74203eae07735b94c673710957d4b03ecc35da4f 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/suggestions/SuggestionsBottomSheetContent.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/suggestions/SuggestionsBottomSheetContent.java
@@ -12,6 +12,7 @@ import android.view.MotionEvent;
 import android.view.View;
 
 import org.chromium.base.ApiCompatibilityUtils;
+import org.chromium.base.DiscardableReferencePool;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.ChromeActivity;
 import org.chromium.chrome.browser.NativePageHost;
@@ -56,7 +57,8 @@ public class SuggestionsBottomSheetContent implements BottomSheet.BottomSheetCon
                 new SuggestionsNavigationDelegateImpl(activity, profile, sheet, tabModelSelector);
         mTileGroupDelegate = new TileGroupDelegateImpl(
                 activity, profile, tabModelSelector, navigationDelegate, snackbarManager);
-        mSuggestionsUiDelegate = createSuggestionsDelegate(profile, navigationDelegate, sheet);
+        mSuggestionsUiDelegate = createSuggestionsDelegate(
+                profile, navigationDelegate, sheet, activity.getReferencePool());
 
         mView = LayoutInflater.from(activity).inflate(
                 R.layout.suggestions_bottom_sheet_content, null);
@@ -179,7 +181,8 @@ public class SuggestionsBottomSheetContent implements BottomSheet.BottomSheetCon
     }
 
     private static SuggestionsUiDelegateImpl createSuggestionsDelegate(Profile profile,
-            SuggestionsNavigationDelegate navigationDelegate, NativePageHost host) {
+            SuggestionsNavigationDelegate navigationDelegate, NativePageHost host,
+            DiscardableReferencePool referencePool) {
         SnippetsBridge snippetsBridge = null;
         SuggestionsSource suggestionsSource;
         SuggestionsEventReporter eventReporter;
@@ -198,7 +201,7 @@ public class SuggestionsBottomSheetContent implements BottomSheet.BottomSheetCon
         }
 
         SuggestionsUiDelegateImpl delegate = new SuggestionsUiDelegateImpl(
-                suggestionsSource, eventReporter, navigationDelegate, profile, host);
+                suggestionsSource, eventReporter, navigationDelegate, profile, host, referencePool);
         if (snippetsBridge != null) delegate.addDestructionObserver(snippetsBridge);
 
         return delegate;