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These were pulled in because trichrome uses monochrome
templates. Since Trichrome still shares the same native library
logic with monochrome it makes sense to continue using monochrome
templates, but using a variable |is_trichrome| to differentiate
trichrome from monochrome.

This CL removes Java deps, some Java resource deps, and webview's
locale pak files from TrichromeChrome.apk.

Validated CL changes by:
  * Building the 3 trichrome apks and their downstream variants
  * Installing/launching TrichromeChrome.apk
  * Manually inspecting the .build_config and "unzip -l" changes

      |     old (c)|     new (c)|    diff (c)|
 total|    24.8 MiB|    23.6 MiB|    -1.2 MiB|
   dex|     6.8 MiB|     6.4 MiB|  -392.1 KiB|
  arsc|     4.9 MiB|     4.8 MiB|  -101.8 KiB|
   xml|   344.9 KiB|   344.9 KiB|        -6 B|
   res|   912.3 KiB|   908.2 KiB|    -4.1 KiB|
native|   254.6 KiB|   254.6 KiB|        +0 B|
 asset|    11.1 MiB|    10.4 MiB|  -698.0 KiB|
  misc|   145.3 KiB|   142.4 KiB|    -2.9 KiB|

Bug: 932253
Change-Id: Iedb427aa5ec05ad3bc905ac61b23f615349d579e
Reviewed-on: https://chromium-review.googlesource.com/c/1481019
Commit-Queue: Eric Stevenson <estevenson@chromium.org>
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#634385}