[MIPS] Add mips_fpu_mode to build/common.gypi

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index cc53b3a6a7b681ebffd75408f83554b756dc9801..d4d552d28b631b2f87fe6f42d572eee0a20b7f55 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -2275,6 +2275,11 @@
         'arm_thumb%': 1,
       }],
 
+      # Set default compiler flags depending on MIPS architecture variant.
+      ['target_arch=="mipsel" and mips_arch_variant=="r2" and android_webview_build==0', {
+        'mips_fpu_mode%': 'fp32',
+      }],
+
       ['android_webview_build==1', {
         # The WebView build gets its cpu-specific flags from the Android build system.
         'arm_arch%': '',
@@ -2282,6 +2287,7 @@
         'arm_fpu%': '',
         'arm_float_abi%': '',
         'arm_thumb%': 0,
+        'mips_fpu_mode%': '',
       }],
 
       # Enable brlapi by default for chromeos.