Move app_installer into chromium.

build/all.gyp

Index: build/all.gyp
diff --git a/build/all.gyp b/build/all.gyp
index bb3479a9c87586d46d13bb6baf3c9f4ef00d59af..58425520158b807840f96fd24133d772987461ac 100644
--- a/build/all.gyp
+++ b/build/all.gyp
@@ -179,6 +179,7 @@
             }],
           ],
           'dependencies': [
+            '../app_installer/app_installer.gyp:*',
             '../chrome_elf/chrome_elf.gyp:*',
             '../cloud_print/cloud_print.gyp:*',
             '../courgette/courgette.gyp:*',
@@ -315,6 +316,7 @@
         }],
         ['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.
@@ -1124,6 +1126,7 @@
               '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',