[MIPS] Support to build libchromeview for MIPS-Android

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index c2f26efa08fa781bebc01ffeb018b26b1efe8ae7..d23352eed3add8e9a6148234e0980607114289dc 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -956,6 +956,9 @@
     # Set to 1 to link against gsettings APIs instead of using dlopen().
     'linux_link_gsettings%': 0,
 
+    # Default arch variant for MIPS.
+    'mips_arch_variant%': 'mips32r2',
+
     # Enable use of OpenMAX DL FFT routines.
     'use_openmax_dl_fft%': '<(use_openmax_dl_fft)',
 
@@ -1203,6 +1206,12 @@
               'android_ndk_sysroot%': '<(android_ndk_root)/platforms/android-14/arch-arm',
               'android_toolchain%': '<(android_ndk_root)/toolchains/arm-linux-androideabi-4.6/prebuilt/<(host_os)-<(android_host_arch)/bin',
             }],
+            ['target_arch == "mipsel"', {
+              'android_app_abi%': 'mips',
+              'android_gdbserver%': '<(android_ndk_root)/prebuilt/android-mips/gdbserver/gdbserver',
+              'android_ndk_sysroot%': '<(android_ndk_root)/platforms/android-14/arch-mips',
+              'android_toolchain%': '<(android_ndk_root)/toolchains/mipsel-linux-android-4.6/prebuilt/<(host_os)-x86/bin',
+            }],
           ],
         },
         # Copy conditionally-set variables out one scope.
@@ -2951,6 +2960,30 @@
               }],
             ],
           }],
+          ['target_arch=="mipsel"', {
+            'target_conditions': [
+              ['_toolset=="target"', {
+                'conditions': [
+                  ['mips_arch_variant=="mips32r2"', {
+                    'cflags': ['-mips32r2', '-Wa,-mips32r2'],
+                  }, {
+                    'cflags': ['-mips32', '-Wa,-mips32'],
+                  }],
+                ],
+                'cflags': [
+                  '-EL',
+                  '-mhard-float',
+                ],
+                'ldflags': [
+                  '-EL',
+                  '-Wl,--no-keep-memory'
+                ],
+                'cflags_cc': [
+                  '-Wno-uninitialized',
+                ],
+              }],
+            ],
+          }],
           ['linux_fpic==1', {
             'cflags': [
               '-fPIC',
@@ -4262,7 +4295,7 @@
         ['LINK.host', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <!(which g++))'],
       ],
     }],
-    ['target_arch=="mipsel"', {
+    ['OS=="linux" and target_arch=="mipsel"', {
       'make_global_settings': [
         ['CC', '<(sysroot)/../bin/mipsel-linux-gnu-gcc'],
         ['CXX', '<(sysroot)/../bin/mipsel-linux-gnu-g++'],