Make context menu dialog title scrollable for alt-text.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ContextMenuTitleView.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ContextMenuTitleView.java b/chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ContextMenuTitleView.java
new file mode 100644
index 0000000000000000000000000000000000000000..7a77d419e1e86ce211d84340b32b5f2972c89c33
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/contextmenu/ContextMenuTitleView.java
@@ -0,0 +1,45 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.contextmenu;
+
+import android.content.Context;
+import android.widget.ScrollView;
+import android.widget.TextView;
+
+import org.chromium.chrome.R;
+
+/**
+ * Context menu title text view that is restricted height and scrollable.
+ */
+public class ContextMenuTitleView extends ScrollView {
+    private static final int MAX_HEIGHT_DP = 70;
+    private static final int PADDING_DP = 16;
+
+    private final float mDpToPx;
+
+    /**
+     * @param context Context to be used to inflate this view.
+     * @param title String to be displayed as the title.
+     */
+    public ContextMenuTitleView(Context context, String title) {
+        super(context);
+        mDpToPx = getContext().getResources().getDisplayMetrics().density;
+        int padding = (int) (PADDING_DP * mDpToPx);
+        setPadding(padding, padding, padding, 0);
+
+        TextView titleView = new TextView(context);
+        titleView.setText(title);
+        titleView.setTextColor(getResources().getColor(R.color.default_text_color));
+        titleView.setPadding(0, 0, 0, padding);
+        addView(titleView);
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        int maxHeight = (int) (MAX_HEIGHT_DP * mDpToPx);
+        heightMeasureSpec = MeasureSpec.makeMeasureSpec(maxHeight, MeasureSpec.AT_MOST);
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+    }
+}