Enable chromium http stack for x86

Use chromium http stack as the online media http stack for x86 platform.

Change-Id: I16a7a8697127a51fab8105833f7463911852f0b3

Author: juntian

media/libstagefright/Android.mk

@@ -95,10 +95,12 @@ LOCAL_STATIC_LIBRARIES := \
 # currently must follow the same logic to determine how webkit was built and
 # if it's safe to link against libchromium.net
 
-# V8 also requires an ARMv7 CPU, and since we must use jsc, we cannot
+# V8 also requires an ARMv7 & x86 CPU, and since we must use jsc, we cannot
 # use the Chrome http stack either.
 ifneq ($(strip $(ARCH_ARM_HAVE_ARMV7A)),true)
-  USE_ALT_HTTP := true
+  ifneq ($(TARGET_ARCH),x86)
+      USE_ALT_HTTP := true
+  endif
 endif
 
 # See if the user has specified a stack they want to use