Change UI font at startup time if necessary, based on the UI locale.

As of writing, ChromeDroidSans is used as the UI font (see
/etc/gtk-2.0/gtkrc). This setting does not work well for Japanese users
as Chinese glyphs are used for Kanji characters. For Japanese UI, we
should use a Japanese font.

Introduce IDS_UI_FONT_FAMILY_CROS to control the UI font based on the
UI locale. For now, app_locale_settings_ja.xtb only contains a
non-default value: IPAPGothic.

Just for the record, I originally tried to use "DroidSans Japanese"
but for some reason, this caused space characters (0x20) to be garbled
in the wrench menu. Hence, IPAPGotchic is chosen for now.

TEST=manually on the netbook, and ubuntu
BUG=chromium-os:4038

Review URL: http://codereview.chromium.org/3275008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@58913 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 34 insertions, 21 deletions

diff --git a/app/app.gyp b/app/app.gyp
index 4b1fde4..2c8e7f7 100644
--- a/app/app.gyp
+++ b/app/app.gyp
@@ -112,6 +112,9 @@
             ['use_titlecase_in_grd_files==1', {
               'action': ['-D', 'use_titlecase'],
             }],
+            ['chromeos==1', {
+              'action': ['-D', 'chromeos'],
+            }],
           ],
         },
       ],
diff --git a/app/resources/app_locale_settings.grd b/app/resources/app_locale_settings.grd
index cf799c3..9b900cd 100644
--- a/app/resources/app_locale_settings.grd
+++ b/app/resources/app_locale_settings.grd
@@ -176,29 +176,38 @@
            Linux fonts do not have the issue Windows fonts for some locales
            (Indian) have. In that case, this need to be enclosed
            by platform-dependent if-clause. -->
-      <message name="IDS_UI_FONT_FAMILY" use_name_for_id="true">
-        default
-      </message>
-      <!-- For Windows XP -->
-      <message name="IDS_UI_FONT_FAMILY_XP" use_name_for_id="true">
-        default
-      </message>
+      <if expr="os == 'win32'">
+        <message name="IDS_UI_FONT_FAMILY" use_name_for_id="true">
+          default
+        </message>
+        <!-- For Windows XP -->
+        <message name="IDS_UI_FONT_FAMILY_XP" use_name_for_id="true">
+          default
+        </message>
 
-      <!-- To get the actual UI font size for native UI components
-           (e.g. menu), the system UI font size is scaled with this value/100.
-           This should be 100 for most locales. -->
-      <message name="IDS_UI_FONT_SIZE_SCALER" use_name_for_id="true">
-        100
-      </message>
-      <!-- For Windows XP -->
-      <message name="IDS_UI_FONT_SIZE_SCALER_XP" use_name_for_id="true">
-        100
-      </message>
+        <!-- To get the actual UI font size for native UI components
+             (e.g. menu), the system UI font size is scaled with this value/100.
+             This should be 100 for most locales. -->
+        <message name="IDS_UI_FONT_SIZE_SCALER" use_name_for_id="true">
+          100
+        </message>
+        <!-- For Windows XP -->
+        <message name="IDS_UI_FONT_SIZE_SCALER_XP" use_name_for_id="true">
+          100
+        </message>
 
-      <!-- Limit minimum UI font size to 5 by default. -->
-      <message name="IDS_MINIMUM_UI_FONT_SIZE" use_name_for_id="true">
-        5
-      </message>
+        <!-- Limit minimum UI font size to 5 by default. -->
+        <message name="IDS_MINIMUM_UI_FONT_SIZE" use_name_for_id="true">
+          5
+        </message>
+      </if>
+      <!-- For Chrome OS -->
+      <if expr="pp_ifdef('chromeos')">
+        <!-- The font name like: 'Font Name, 10' -->
+        <message name="IDS_UI_FONT_FAMILY_CROS" use_name_for_id="true">
+          default
+        </message>
+      </if>
     </messages>
   </release>
 </grit>
diff --git a/app/resources/app_locale_settings_ja.xtb b/app/resources/app_locale_settings_ja.xtb
index 3a31fb1..933d47d 100644
--- a/app/resources/app_locale_settings_ja.xtb
+++ b/app/resources/app_locale_settings_ja.xtb
@@ -2,4 +2,5 @@
 <!DOCTYPE translationbundle>
 <translationbundle lang="ja">
 <translation id="IDS_MINIMUM_UI_FONT_SIZE">10</translation>
+<translation id="IDS_UI_FONT_FAMILY_CROS">IPAPGothic, 10</translation>
 </translationbundle>