Below is the list of changes in reverse order.

1. Drop uconv.patch (upstream took my patch)
2. Apply data.build.win and data_sym patches
3. Apply vscomp.patch and update the patch file.
   update README.chromium about two parts of the patch that
   are not necessary any more.

4. Apply wpo patch and update the patch file

5. Android brkitr adjustment
   * Do not apply the patch but just updates the patch
   * Do not use CJdict on Android to save 2MB in the data size.

6. Clean up brkitr patches
  * Rename brkitr.patch to wordbkr.patch and keep only word.txt diff
  * Make a new linebrk.patch with line breaking adjustment (dropping
    loose rules to save space until the upstream implements space-efficient mechanism for line breaking rule variations)
  * Update README.chromium
  * Apply local patches for Khmer dictionary handling and cjdict

7. Adjust line breaking rules.
  This corresponds to set 2 in
     https://code.google.com/p/chromium/issues/detail?id=575007#c6

BUG=575007
TEST=None
R=mark@chromium.org

Review URL: https://codereview.chromium.org/1637683002 .