Remove unneeded JNI registrations.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 73c2a4461b33f77cf44c58132bf493612feb57a7..d9f28b616dd9976ec969e16dee5df730d34ec7c9 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -1731,6 +1731,9 @@
 
         # Copy it out one scope.
         'android_webview_build%': '<(android_webview_build)',
+
+        # Default android linker script for shared library exports.
+        'android_linker_script%': '<(SHARED_INTERMEDIATE_DIR)/android_exports.lst',
       }],  # OS=="android"
       ['android_webview_build==1', {
         # When building the WebView in the Android tree, jarjar will remap all
@@ -4150,7 +4153,12 @@
         },
         'target_conditions': [
           ['_type=="shared_library"', {
-           'product_extension': '<(android_product_extension)',
+            'product_extension': '<(android_product_extension)',
+          }],
+          ['_toolset=="target" and component=="static_library" and _type=="shared_library"', {
+            'inputs': [

[Torne, 2014/06/11 10:29:47]

Does this actually have any effect? I wouldn't expect "inputs" here to do
anything, since it's not inside of an action or rule.

+              '<(android_linker_script)',
+            ],
           }],
 
           # Settings for building device targets using Android's toolchain.
@@ -4216,8 +4224,7 @@
             'ldflags': [
               '-nostdlib',
               '-Wl,--no-undefined',
-              # Don't export symbols from statically linked libraries.
-              '-Wl,--exclude-libs=ALL',

[Torne, 2014/06/11 10:29:47]

If we remove this, doesn't it mean that any target which *doesn't* depend on JNI
will end up with all its symbols exported?

+
             ],
             'libraries': [
               '-l<(android_stlport_library)',
@@ -4228,11 +4235,6 @@
               '-lm',
             ],
             'conditions': [
-              ['component=="shared_library"', {
-                'ldflags!': [
-                  '-Wl,--exclude-libs=ALL',
-                ],
-              }],
               ['clang==1', {
                 'cflags': [
                   # Work around incompatibilities between bionic and clang