Fix build for xcodebuild from Xcode 5:

- In Xcode 5, ARCHS defaults to x86_64 instead of i386. Use i386 for the
   32-bit Chrome build.
 - In Xcode 5, otool is no longer available in DEVELOPER_BIN_DIR. Run otool
   via xcrun as in r227787.

BUG=280362
R=thakis@chromium.org

Review URL: https://codereview.chromium.org/47753003

git-svn-id: http://src.chromium.org/svn/trunk/src/build@232181 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

common.gypi

@@ -4648,6 +4648,11 @@
           'x86_64'
          ],
       }],
+      ['target_arch=="ia32"', {
+        'ARCHS': [
+          'i386'
+         ],
+      }],
     ],
 
     # The Xcode generator will look for an xcode_settings section at the root

mac/verify_no_objc.sh

@@ -26,10 +26,9 @@
 
 set -eu
 
-otool="${DEVELOPER_BIN_DIR:-/usr/bin}/otool"
 executable="${BUILT_PRODUCTS_DIR}/${EXECUTABLE_PATH}"
 
-if "${otool}" -arch i386 -o "${executable}" | grep -q '^Contents.*section$'; \
+if xcrun otool -arch i386 -o "${executable}" | grep -q '^Contents.*section$'; \
 then
   echo "${0}: ${executable} has an __OBJC,__image_info section" 2>&1
   exit 1