Refactor lazy JNI registration support.

Rename the "linker_script_copy" target to "android_exports" and move the
link_settings clause to that target. This avoids the linker flag being
duplicated once for every target which includes jni_generator.gypi,
which causes problems on some linker versions.

BUG=402003

Review URL: https://codereview.chromium.org/473173004

Cr-Commit-Position: refs/heads/master@{#289941}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289941 0039d316-1c4b-4281-b951-d872f2087c98

build/linker_script_copy.gyp → build/android/android_exports.gyp

@@ -5,7 +5,7 @@
 {
   'targets': [
     {
-      'target_name': 'linker_script_copy',
+      'target_name': 'android_exports',
       'type': 'none',
       'inputs': [
         '<(DEPTH)/build/android/android_exports.lst',
@@ -21,6 +21,19 @@
          ],
         },
       ],
+      'conditions': [
+        ['component=="static_library"', {
+          'link_settings': {
+            'ldflags': [
+              # Only export symbols that are specified in version script.
+              '-Wl,--version-script=<(android_linker_script)',
+            ],
+            'ldflags!': [
+              '-Wl,--exclude-libs=ALL',
+            ],
+          },
+        }],
+      ],
     },
   ],
 }

build/jar_file_jni_generator.gypi

@@ -70,20 +70,7 @@
         'native_exports%': '--native_exports',
       },
       'dependencies': [
-        '<(DEPTH)/build/linker_script_copy.gyp:linker_script_copy',
-      ],
-      'conditions': [
-        ['component=="static_library"', {
-          'link_settings': {
-            'ldflags': [
-              # Only export symbols that are specified in version script.
-              '-Wl,--version-script=<(android_linker_script)',
-            ],
-            'ldflags!': [
-              '-Wl,--exclude-libs=ALL',
-            ],
-          },
-        }],
+        '<(DEPTH)/build/android/android_exports.gyp:android_exports',
       ],
     }],
   ],

build/jni_generator.gypi

@@ -38,9 +38,6 @@
     ),
     'native_exports%': '',
   },
-  'dependencies': [
-    '<(DEPTH)/build/linker_script_copy.gyp:linker_script_copy',
-  ],
   'rules': [
     {
       'rule_name': 'generate_jni_headers',
@@ -92,20 +89,7 @@
         'native_exports%': '--native_exports',
       },
       'dependencies': [
-        '<(DEPTH)/build/linker_script_copy.gyp:linker_script_copy',
-      ],
-      'conditions': [
-        ['component=="static_library"', {
-          'link_settings': {
-            'ldflags': [
-              # Only export symbols that are specified in version script.
-              '-Wl,--version-script=<(android_linker_script)',
-            ],
-            'ldflags!': [
-              '-Wl,--exclude-libs=ALL',
-            ],
-          },
-        }],
+        '<(DEPTH)/build/android/android_exports.gyp:android_exports',
       ],
     }],
   ],