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chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunView.java

 // Copyright 2016 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.firstrun;
 
 import android.content.Context;
 import android.util.AttributeSet;
 import android.view.View;
 import android.widget.FrameLayout;
@@ skipping 30 matching lines @@
         mImageAndContent = (LinearLayout) findViewById(R.id.fre_image_and_content);
         mContentWrapper = (LinearLayout) findViewById(R.id.fre_content_wrapper);
 
 
     }
 
     protected boolean isHorizontalModeEnabled() {
         return true;
     }
 
-    protected boolean isDynamicPaddingEnabled() {
-        return true;
-    }
-
     @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        // There was a requirement to have the titles and images of all of the first run experience
+        // pages to be vertically aligned so the transitions between pages look nice.
+        // The other requirement is for an alternate layout in horizontal mode for screens of a
+        // certain size. These are why the padding is set manually.
+
         // This assumes that view's layout_width is set to match_parent.
         assert MeasureSpec.getMode(widthMeasureSpec) == MeasureSpec.EXACTLY;
 
         int width = MeasureSpec.getSize(widthMeasureSpec);
         int height = MeasureSpec.getSize(heightMeasureSpec);
 
         MarginLayoutParams contentWrapperLayout =
                 (MarginLayoutParams) mContentWrapper.getLayoutParams();
 
         int imageAndContentPaddingStart = 0;
@@ skipping 22 matching lines @@
             contentWrapperLayout.topMargin =
                     getResources().getDimensionPixelSize(R.dimen.fre_vertical_spacing);
 
             halfContentHeight = getResources().getDimensionPixelSize(R.dimen.fre_title_text_size)
                     + getResources().getDimensionPixelSize(R.dimen.fre_vertical_spacing)
                     + getResources().getDimensionPixelSize(R.dimen.fre_image_height)
                     + getResources().getDimensionPixelSize(R.dimen.fre_vertical_spacing);
         }
 
         // Add padding to get it roughly centered.
-        if (isDynamicPaddingEnabled()) {
-            int topPadding = Math.max(0, (height / 2) - halfContentHeight);
+        int topPadding = Math.max(0, (height / 2) - halfContentHeight);
 
-            mMainLayout.setPadding(mMainLayout.getPaddingLeft(), topPadding,
-                    mMainLayout.getPaddingRight(), mMainLayout.getPaddingBottom());
-        }
+        mMainLayout.setPadding(mMainLayout.getPaddingLeft(), topPadding,
+                mMainLayout.getPaddingRight(), mMainLayout.getPaddingBottom());
 
         ApiCompatibilityUtils.setPaddingRelative(mImageAndContent,
                 imageAndContentPaddingStart,
                 mImageAndContent.getPaddingTop(),
                 ApiCompatibilityUtils.getPaddingEnd(mImageAndContent),
                 mImageAndContent.getPaddingBottom());
 
         mContentWrapper.setLayoutParams(contentWrapperLayout);
 
         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
     }
 
 }