Move app_installer into chromium.

build/all.gyp

Index: build/all.gyp
diff --git a/build/all.gyp b/build/all.gyp
index 00b5fdb15959d77c6f6a9787c43d26be32d5a68f..c5357cabfd69646ccf83a06b561890febf7dbcea 100644
--- a/build/all.gyp
+++ b/build/all.gyp
@@ -178,6 +178,7 @@
             }],
           ],
           'dependencies': [
+            '../app_installer/app_installer.gyp:*',
             '../chrome_elf/chrome_elf.gyp:*',
             '../cloud_print/cloud_print.gyp:*',
             '../courgette/courgette.gyp:*',
@@ -311,6 +312,7 @@
         }],
         ['OS=="win"', {
           'dependencies': [
+            '../app_installer/app_installer.gyp:app_installer',
             '../chrome/chrome.gyp:crash_service',
             '../chrome/chrome.gyp:installer_util_unittests',
             # ../chrome/test/mini_installer requires mini_installer.
@@ -1121,6 +1123,7 @@
               'target_name': 'chrome_official_builder',
               'type': 'none',
               'dependencies': [
+                '../app_installer/app_installer.gyp:app_installer',
                 '../base/base.gyp:base_unittests',
                 '../chrome/chrome.gyp:browser_tests',
                 '../chrome/chrome.gyp:crash_service',