Make Google API keys available for the Java codebase

chrome/android/BUILD.gn

Index: chrome/android/BUILD.gn
diff --git a/chrome/android/BUILD.gn b/chrome/android/BUILD.gn
index bdb39fb329cc22d119393aeef154d55223ce0bae..314dbd150b684a076325592f4fdfe7c5aa50239d 100644
--- a/chrome/android/BUILD.gn
+++ b/chrome/android/BUILD.gn
@@ -161,6 +161,7 @@ android_library("chrome_java") {
 
   srcjar_deps = [
     ":chrome_android_java_enums_srcjar",
+    ":chrome_android_java_google_api_keys_srcjar",
     ":chrome_version_srcjar",
     ":custom_tabs_service_aidl",
     ":resource_id_javagen",
@@ -181,6 +182,20 @@ android_library("chrome_java") {
 # GYP: //chrome/chrome_browser.gypi:connection_security_levels_java
 # GYP: //chrome/chrome_browser.gypi:tab_load_status_java
 # GYP: //chrome/chrome_browser.gypi:infobar_action_type_java
+
+action("chrome_android_java_google_api_keys_srcjar") {
+  script = "//build/android/gyp/java_google_api_keys.py"
+  _output_path = rebase_path("${target_name}.srcjar", ".", target_gen_dir)

[agrieve, 2015/11/04 02:09:11]

These two lines are a bit weird. I copied this part in and print()ed
_outtput_path, and it gives:
  
../../out-gn/Debug/gen/chrome/android/chrome_android_java_google_api_keys_srcjar.srcjar

It actually only even works because chrome/android is two levels deep, and
out-gn/Debug is also two levels deep.

Better would be:
_output_path = "$target_gen_dir/$target_name.srcjar"
outputs = [ _output_path ]
args = [ "--srcjar", rebase_path(_output_path, root_build_dir) ]

[dvh, 2015/11/04 05:26:11]

Done.

+  _output_file = get_path_info(_output_path, "abspath")
+  outputs = [
+    _output_file,
+  ]
+  args = [
+    "--srcjar",
+    _output_path,
+  ]
+}
+
 java_cpp_enum("chrome_android_java_enums_srcjar") {
   sources = [
     "//chrome/browser/android/activity_type_ids.h",