Archive chromedriver binary into official buckets.

Bug: 835950
Change-Id: I47800b90b1ec6b684d1d5f602b0beb84cb0919df
Reviewed-on: https://chromium-review.googlesource.com/1034208Reviewed-by: Michael Moss <mmoss@chromium.org>
Commit-Queue: Caleb Rouleau <crouleau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#555244}

chrome/tools/build/linux/FILES.cfg

@@ -290,4 +290,12 @@ FILES = [
     'filename': 'MEIPreload/preloaded_data.pb',
     'buildtype': ['dev', 'official'],
   },
+  # ChromeDriver binary:
+  {
+    'filename': 'chromedriver',
+    'arch': ['64bit'],
+    'buildtype': ['official'],
+    'archive': 'chromedriver_linux64.zip',
+    'optional': ['official'],
+  },
 ]

chrome/tools/build/mac/FILES.cfg

@@ -127,4 +127,12 @@ FILES = [
     'archive': 'content-shell.zip',
     'optional': ['dev'],
   },
+  # ChromeDriver binary:
+  {
+    'filename': 'chromedriver',
+    'arch': ['64bit'],
+    'buildtype': ['official'],
+    'archive': 'chromedriver_mac64.zip',
+    'optional': ['official'],
+  },
 ]

chrome/tools/build/win/FILES.cfg

@@ -10,7 +10,7 @@
 #
 # filename: Name of the file in the build output directory.
 # arch:     List of CPU architectures for which this file should be processed
-#           Leave this unspecified to prcoess for all architectures.
+#           Leave this unspecified to process for all architectures.
 #           Acceptable values are 64bit, 32bit and arm.
 # buildtype: List of build types for which this file should be processed.
 # archive: The name of the archive file to store filename in. If not specified,
@@ -800,4 +800,12 @@ FILES = [
     'filename': 'MEIPreload/preloaded_data.pb',
     'buildtype': ['dev', 'official'],
   },
+  # ChromeDriver binary:
+  {
+    'filename': 'chromedriver.exe',
+    'arch': ['32bit']
+    'buildtype': ['official'],
+    'archive': 'chromedriver_win32.zip',
+    'optional': ['official'],
+  },
 ]