Delete Android build system makefiles.

Android.mk

-# Copyright (c) 2012 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# This Android makefile is used to build WebView in the Android build system.
-# gyp autogenerates most of the real makefiles, which we include below.
-
-LOCAL_PATH := $(call my-dir)
-CHROMIUM_DIR := $(LOCAL_PATH)
-
-# We default to release for the Android build system. Developers working on
-# WebView code can build with "make GYP_CONFIGURATION=Debug".
-GYP_CONFIGURATION := Release
-
-# If the product is using a prebuilt libwebviewchromium then we need to skip
-# including most of the makefiles to avoid duplicate target definitions. Some
-# targets are still needed, so list their makefiles explicitly.
-ifeq ($(PRODUCT_PREBUILT_WEBVIEWCHROMIUM),yes)
-GYP_MAKEFILE_STEMS := \
-        $(addprefix $(CHROMIUM_DIR)/v8/tools/gyp/, \
-                generate_trig_table.host \
-                js2c.host \
-                mksnapshot.host \
-                v8_base.host \
-                v8_libbase.host \
-                v8_nosnapshot.host \
-                v8_base.target \
-                v8_libbase.target \
-                v8_snapshot.target \
-        ) \
-        $(addprefix $(CHROMIUM_DIR)/third_party/icu/, \
-                icudata.host \
-                icui18n.host \
-                icuuc.host \
-                icui18n.target \
-                icuuc.target \
-                system_icu.target \
-        )
-else
-# Not using a prebuilt; include the manually-written makefile that builds all
-# the WebView java code, and use the main autogenerated makefile.
-include $(CHROMIUM_DIR)/android_webview/Android.mk
-GYP_MAKEFILE_STEMS := $(CHROMIUM_DIR)/GypAndroid
-endif
-
-# If the gyp-generated makefile exists for the current host OS and primary
-# target architecture, we need to include it. If it doesn't exist then just do
-# nothing, since we may not have finished bringing up this architecture yet.
-ifneq (,$(wildcard $(CHROMIUM_DIR)/GypAndroid.$(HOST_OS)-$(TARGET_ARCH).mk))
-
-# We set GYP_VAR_PREFIX to the empty string to indicate that we are building for
-# the primary target architecture.
-GYP_VAR_PREFIX :=
-
-# If the host is declared as being 64-bit, set the host multilib variables
-# appropriately to ensure that the host targets are the same "bitness" as the
-# primary target, which is required by V8.
-ifeq ($(HOST_IS_64_BIT),true)
-ifeq ($(TARGET_IS_64_BIT),true)
-GYP_HOST_VAR_PREFIX :=
-GYP_HOST_MULTILIB := 64
-else  # Target is 32-bit.
-GYP_HOST_VAR_PREFIX := $(HOST_2ND_ARCH_VAR_PREFIX)
-GYP_HOST_MULTILIB := 32
-endif
-endif
-
-# Include the appropriate version of each of the makefiles.
-include $(addsuffix .$(HOST_OS)-$(TARGET_ARCH).mk,$(GYP_MAKEFILE_STEMS))
-
-endif  # End primary architecture handling.
-
-# Do the same check for the secondary architecture; if this doesn't exist then
-# the current target platform probably doesn't have a secondary architecture and
-# we can just do nothing.
-ifneq (,$(wildcard $(CHROMIUM_DIR)/GypAndroid.$(HOST_OS)-$(TARGET_2ND_ARCH).mk))
-
-# We set GYP_VAR_PREFIX to $(TARGET_2ND_ARCH_VAR_PREFIX) to indicate that we are
-# building for the secondary target architecture.
-GYP_VAR_PREFIX := $(TARGET_2ND_ARCH_VAR_PREFIX)
-
-# If the host is declared as being 64-bit, set the host multilib variables
-# appropriately to ensure that the host targets are the same "bitness" as the
-# secondary target, which is required by V8.
-ifeq ($(HOST_IS_64_BIT),true)
-ifeq ($(2ND_TARGET_IS_64_BIT),true)
-GYP_HOST_VAR_PREFIX :=
-GYP_HOST_MULTILIB := 64
-else  # Second target is 32-bit.
-GYP_HOST_VAR_PREFIX := $(HOST_2ND_ARCH_VAR_PREFIX)
-GYP_HOST_MULTILIB := 32
-endif
-endif
-
-# Include the appropriate version of each of the makefiles.
-include $(addsuffix .$(HOST_OS)-$(TARGET_2ND_ARCH).mk,$(GYP_MAKEFILE_STEMS))
-
-endif  # End secondary architecture handling.