Remove pp_ifdef from resource files in chrome/app/.

chrome/app/theme/chrome_unscaled_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- This grd file contains images that are not pre-scaled for device
      scale factors. The image returned by
      |base::ResourceBundle::GetImageNamed| only contains 100P, and
      it is the caller's responsibility to do the right thing when the
      display is not at 100P device scale factor.
   -->
 <grit latest_public_release="0" current_release="1">
   <outputs>
     <output filename="grit/chrome_unscaled_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="chrome_unscaled_resources.pak" type="data_package" />
   </outputs>
   <release seq="1">
     <includes>
-      <if expr="pp_ifdef('_google_chrome')">
+      <if expr="_google_chrome">
         <include name="IDR_PRODUCT_LOGO_64" file="google_chrome/product_logo_64.png" type="BINDATA" />
         <include name="IDR_PRODUCT_LOGO_128" file="google_chrome/product_logo_128.png" type="BINDATA" />
         <!-- NOTE: product_logo_*.* files beyond what's listed above are
              referenced by installer code; don't remove them unless you know
              what you're doing! -->
         <if expr="is_macosx">
           <include name="IDR_STATUS_TRAY_ICON" file="google_chrome/product_logo_22_mono.png" type="BINDATA" />
           <include name="IDR_STATUS_TRAY_ICON_PRESSED" file="google_chrome/product_logo_22_mono_invert.png" type="BINDATA" />
         </if>
         <if expr="not is_macosx">
           <include name="IDR_STATUS_TRAY_ICON" file="google_chrome/product_logo_22.png" type="BINDATA" />
           <include name="IDR_STATUS_TRAY_ICON_PRESSED" file="google_chrome/product_logo_22.png" type="BINDATA" />
         </if>
       </if>
-      <if expr="not pp_ifdef('_google_chrome')">
+      <if expr="not _google_chrome">
         <include name="IDR_PRODUCT_LOGO_64" file="chromium/product_logo_64.png" type="BINDATA" />
         <include name="IDR_PRODUCT_LOGO_128" file="chromium/product_logo_128.png" type="BINDATA" />
         <!-- NOTE: product_logo_*.* files beyond what's listed above are
              referenced by installer code; don't remove them unless you know
              what you're doing! -->
         <if expr="is_macosx">
           <include name="IDR_STATUS_TRAY_ICON" file="chromium/product_logo_22_mono.png" type="BINDATA" />
           <include name="IDR_STATUS_TRAY_ICON_PRESSED" file="chromium/product_logo_22_mono_invert.png" type="BINDATA" />
         </if>
         <if expr="not is_macosx">
@@ skipping 26 matching lines @@
         <include name="IDR_PROFILE_AVATAR_2X_17" file="default_200_percent/profile_avatar_soccer.png" type="BINDATA" />
         <include name="IDR_PROFILE_AVATAR_2X_18" file="default_200_percent/profile_avatar_burger.png" type="BINDATA" />
         <include name="IDR_PROFILE_AVATAR_2X_19" file="default_200_percent/profile_avatar_cat.png" type="BINDATA" />
         <include name="IDR_PROFILE_AVATAR_2X_20" file="default_200_percent/profile_avatar_cupcake.png" type="BINDATA" />
         <include name="IDR_PROFILE_AVATAR_2X_21" file="default_200_percent/profile_avatar_dog.png" type="BINDATA" />
         <include name="IDR_PROFILE_AVATAR_2X_22" file="default_200_percent/profile_avatar_horse.png" type="BINDATA" />
         <include name="IDR_PROFILE_AVATAR_2X_23" file="default_200_percent/profile_avatar_margarita.png" type="BINDATA" />
         <include name="IDR_PROFILE_AVATAR_2X_24" file="default_200_percent/profile_avatar_note.png" type="BINDATA" />
         <include name="IDR_PROFILE_AVATAR_2X_25" file="default_200_percent/profile_avatar_sun_cloud.png" type="BINDATA" />
       </if>
-      <if expr="is_macosx and pp_ifdef('enable_app_list')">
+      <if expr="is_macosx and enable_app_list">
         <!-- App Launcher icons for .app shim, dock icon. Unscaled, because the
              icon file built does not depend on UI scale factor. -->
-        <if expr="pp_ifdef('_google_chrome')">
+        <if expr="_google_chrome">
           <include name="IDR_APP_LIST_16" file="google_chrome/mac/app_list_16.png" type="BINDATA" />
           <include name="IDR_APP_LIST_32" file="google_chrome/mac/app_list_32.png" type="BINDATA" />
           <include name="IDR_APP_LIST_128" file="google_chrome/mac/app_list_128.png" type="BINDATA" />
           <include name="IDR_APP_LIST_256" file="google_chrome/mac/app_list_256.png" type="BINDATA" />
           <include name="IDR_APP_LIST_CANARY_16" file="google_chrome/mac/app_list_canary_16.png" type="BINDATA" />
           <include name="IDR_APP_LIST_CANARY_32" file="google_chrome/mac/app_list_canary_32.png" type="BINDATA" />
           <include name="IDR_APP_LIST_CANARY_128" file="google_chrome/mac/app_list_canary_128.png" type="BINDATA" />
           <include name="IDR_APP_LIST_CANARY_256" file="google_chrome/mac/app_list_canary_256.png" type="BINDATA" />
         </if>
-        <if expr="not pp_ifdef('_google_chrome')">
+        <if expr="not _google_chrome">
           <include name="IDR_APP_LIST_16" file="chromium/mac/app_list_16.png" type="BINDATA" />
           <include name="IDR_APP_LIST_32" file="chromium/mac/app_list_32.png" type="BINDATA" />
           <include name="IDR_APP_LIST_128" file="chromium/mac/app_list_128.png" type="BINDATA" />
           <include name="IDR_APP_LIST_256" file="chromium/mac/app_list_256.png" type="BINDATA" />
         </if>
       </if>
-      <if expr="is_linux and pp_ifdef('enable_app_list')">
+      <if expr="is_linux and enable_app_list">
         <!-- App Launcher icons for desktop icon. -->
-        <if expr="pp_ifdef('_google_chrome')">
+        <if expr="_google_chrome">
           <include name="IDR_APP_LIST_16" file="google_chrome/linux/app_list_16.png" type="BINDATA" />
           <include name="IDR_APP_LIST_32" file="google_chrome/linux/app_list_32.png" type="BINDATA" />
           <include name="IDR_APP_LIST_48" file="google_chrome/linux/app_list_48.png" type="BINDATA" />
           <include name="IDR_APP_LIST_256" file="google_chrome/linux/app_list_256.png" type="BINDATA" />
         </if>
-        <if expr="not pp_ifdef('_google_chrome')">
+        <if expr="not _google_chrome">
           <include name="IDR_APP_LIST_16" file="chromium/linux/app_list_16.png" type="BINDATA" />
           <include name="IDR_APP_LIST_32" file="chromium/linux/app_list_32.png" type="BINDATA" />
           <include name="IDR_APP_LIST_48" file="chromium/linux/app_list_48.png" type="BINDATA" />
           <include name="IDR_APP_LIST_256" file="chromium/linux/app_list_256.png" type="BINDATA" />
         </if>
       </if>
       <if expr="is_macosx">
         <include name="IDR_APPS_FOLDER_OVERLAY_16" file="mac/apps_folder_overlay_16.png" type="BINDATA" />
         <include name="IDR_APPS_FOLDER_OVERLAY_32" file="mac/apps_folder_overlay_32.png" type="BINDATA" />
         <include name="IDR_APPS_FOLDER_OVERLAY_128" file="mac/apps_folder_overlay_128.png" type="BINDATA" />
         <include name="IDR_APPS_FOLDER_OVERLAY_512" file="mac/apps_folder_overlay_512.png" type="BINDATA" />
       </if>
     </includes>
   </release>
 </grit>