Fix break building v8 with goma

The error is caused by missing '-m32' parameter when building v8 for host.
  CXX(host) out/Release/obj.host/v8_base/v8/src/accessors.o
v8/src/globals.h:120:2: error: #error Target architecture arm is only supported on arm and ia32 host

v8/build/common.gypi tests if the compiler supports -m32:
  'm32flag': '<!((echo | $(echo ${CXX_host:-$(which g++)}) -m32 -E - > /dev/null 2>&1) && echo -n "-m32" || true)',
but goma is confused by the environment variable GOMA_WRAPPER and exits
with an error:
  GOMA_WRAPPER=<anything>: unkown GOMA_ parameter
and the gyp script thinks that the compiler doesn't support -m32.

Rename GOMA_WRAPPER to ANDROID_GOMA_WRAPPER to avoid confusing goma.

git-svn-id: http://src.chromium.org/svn/trunk/src/build@138916 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

android/envsetup.sh

@@ -107,12 +107,12 @@ export PATH=$PATH:${CHROME_SRC}/build/android
 
 # Performs a gyp_chromium run to convert gyp->Makefile for android code.
 android_gyp() {
-  GOMA_WRAPPER=""
+  ANDROID_GOMA_WRAPPER=""
   if [[ -d $GOMA_DIR ]]; then
-    GOMA_WRAPPER="$GOMA_DIR/gomacc"
+    ANDROID_GOMA_WRAPPER="$GOMA_DIR/gomacc"
   fi
   # Ninja requires "*_target" for target builds.
-  GOMA_WRAPPER=${GOMA_WRAPPER} \
+  ANDROID_GOMA_WRAPPER=${ANDROID_GOMA_WRAPPER} \
   CC_target=$(basename ${ANDROID_TOOLCHAIN}/*-gcc) \
   CXX_target=$(basename ${ANDROID_TOOLCHAIN}/*-g++) \
   LINK_target=$(basename ${ANDROID_TOOLCHAIN}/*-gcc) \

common.gypi

@@ -3090,9 +3090,9 @@
       # Hardcode the compiler names in the Makefile so that
       # it won't depend on the environment at make time.
       'make_global_settings': [
-        ['CC', '<!(/bin/echo -n ${GOMA_WRAPPER} ${ANDROID_TOOLCHAIN}/*-gcc)'],
-        ['CXX', '<!(/bin/echo -n ${GOMA_WRAPPER} ${ANDROID_TOOLCHAIN}/*-g++)'],
-        ['LINK', '<!(/bin/echo -n ${GOMA_WRAPPER} ${ANDROID_TOOLCHAIN}/*-gcc)'],
+        ['CC', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} ${ANDROID_TOOLCHAIN}/*-gcc)'],
+        ['CXX', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} ${ANDROID_TOOLCHAIN}/*-g++)'],
+        ['LINK', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} ${ANDROID_TOOLCHAIN}/*-gcc)'],
         ['CC.host', '<!(which gcc)'],
         ['CXX.host', '<!(which g++)'],
         ['LINK.host', '<!(which g++)'],