Refactor BrowserProcessPlatformPart.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 7d255c7411405be8770796c5c4e9cbdd37ebb6bc..f7b82a1b0b8721cc84a39ab7a35b5d70107d6c07 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -272,10 +272,11 @@
         'browser/browser_process.h',
         'browser/browser_process_impl.cc',
         'browser/browser_process_impl.h',
-        'browser/browser_process_platform_part.cc',
         'browser/browser_process_platform_part.h',
         'browser/browser_process_platform_part_aurawin.cc',
         'browser/browser_process_platform_part_aurawin.h',
+        'browser/browser_process_platform_part_base.cc',
+        'browser/browser_process_platform_part_base.h',
         'browser/browser_process_platform_part_chromeos.cc',
         'browser/browser_process_platform_part_chromeos.h',
         'browser/browser_shutdown.cc',
@@ -2342,7 +2343,7 @@
             ['include', '(^|/)ios/'],
             # TODO(ios): Add files here as they are updated to compile on iOS.
             ['include', '^browser/browser_process\\.cc$'],
-            ['include', '^browser/browser_process_platform_part\\.cc$'],
+            ['include', '^browser/browser_process_platform_part_base\\.cc$'],
           ],
           'link_settings': {
             'libraries': [
@@ -2553,8 +2554,6 @@
             'browser_chromeos',
           ],
           'sources!': [
-            'browser/browser_process_platform_part.cc',
-            'browser/browser_process_platform_part.h',
             'browser/first_run/upgrade_util.cc',
             'browser/first_run/upgrade_util.h',
             'browser/first_run/upgrade_util_linux.cc',
@@ -2625,8 +2624,6 @@
               'sources/': [
                 ['exclude', '^browser/automation/automation_provider_aura.cc'],
                 ['exclude', '^browser/background/background_mode_manager_aura.cc'],
-                ['exclude', '^browser/browser_process_platform_part.cc'],
-                ['exclude', '^browser/browser_process_platform_part.h'],
                 ['exclude', '^browser/lifetime/application_lifetime_win.cc'],
               ],
               'dependencies': [