Make it possible to build url/ without ICU on android.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 176fdaab1ef3b2337d148156cf1116ac4cc6f806..fa41139c61525bb8e0dd0cefd61a870a791e196a 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -483,6 +483,10 @@
       # Enable FTP support by default.
       'disable_ftp_support%': 0,
 
+      # Use platform functions in place of ICU.  Not supported by most
+      # components.
+      'use_icu_alternatives%': 0,

[brettw, 2014/05/02 23:51:02]

Who sets this? Can we just key off of anrdoid webview or something?

[mmenke, 2014/05/03 01:15:50]

Network stack when built as a library will need it (Currently in
components/cronet).  No other modules will need this.  I'm not sure where else
to put it to share stuff between modules.

[mmenke, 2014/05/03 01:17:47]

To clarify, "no other modules" meaning other than net/ and url/.

+
       # XInput2 multitouch support is enabled by default (use_xi2_mt=2).
       # Setting to zero value disables XI2 MT. When XI2 MT is enabled,
       # the input value also defines the required XI2 minor minimum version.
@@ -1039,6 +1043,7 @@
     'cld2_is_component%': '<(cld2_is_component)',
     'enable_captive_portal_detection%': '<(enable_captive_portal_detection)',
     'disable_ftp_support%': '<(disable_ftp_support)',
+    'use_icu_alternatives%': '<(use_icu_alternatives)',
     'enable_task_manager%': '<(enable_task_manager)',
     'sas_dll_path%': '<(sas_dll_path)',
     'wix_path%': '<(wix_path)',
@@ -2610,6 +2615,9 @@
       ['disable_ftp_support==1', {
         'defines': ['DISABLE_FTP_SUPPORT=1'],
       }],
+      ['use_icu_alternatives==1', {
+        'defines': ['USE_ICU_ALTERNATIVES=1'],

[brettw, 2014/05/02 23:51:02]

This is a global defined for every single compile of every single target in the
entire build so that you can pass it into one file. CAn't you just move it to
the url.gyp file?

+      }],
       ['enable_managed_users==1', {
         'defines': ['ENABLE_MANAGED_USERS=1'],
       }],